Perez, Jose L.;

Exercise leg device

A leg exercise device that is replaceably attachable to an open door that includes a first generally L-shaped assembly abuttable against a first side of the open door and a free vertical edge of the open door, a second generally L-shaped assembly, abuttable against a second opposing side of the open door and overlapping a part of the first generally L-shaped assembly, width maintaining apparatus to maintain the first generally L-shaped assembly abuttable against the first side of the open door and the second generally L-shaped assembly abuttable against the second opposing side of the open door, a first flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm hookable on, and suspendable from, a doorknob on the first side of the open door, first height maintaining apparatus to maintain the first generally L-shaped assembly a predetermined distance below the doorknob on the first side of the open door, a second flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm hookable on, and suspendable from, a doorknob on the second opposing side of the open door, second height maintaining apparatus to maintain the second generally L-shaped assembly a predetermined distance below the doorknob on the second opposing side of the open door, and a pedal assembly rotatively attached to the second generally L-shaped assembly.

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The invention claimed is:

1. A leg exercise device replaceably attachable to an open door having a thickness, a free vertical edge, a free lower horizontal edge, a first side with a doorknob extending outwardly therefrom and a contour, and a second opposing side being opposite to the first side of the open door and having a doorknob extending outwardly therefrom and a contour, said device exercising the legs of an exerciser having feet, a height, and a head, comprising:

a) a first generally L-shaped assembly having a generally L-shaped plate with a flat, rectangular-shaped, and wide portion abuttable against the first side of the open door below the doorknob on the first side of the open door, and a flat, rectangular-shaped, and narrow portion being narrower than, and extending perpendicularly inwardly from, said flat, rectangular shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly and being abuttable against the free vertical edge of the open door;

b) a second generally L-shaped assembly having a generally L-shaped plate with a flat, rectangular-shaped, and wide portion abuttable against the second opposing side of the open door below the doorknob on the second opposing side of the open door, and a flat, rectangular-shaped, and narrow portion being narrower than, and extending perpendicularly inwardly from said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said second generally L-shaped assembly and overlapping said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly and being horizontally adjustable therewith, so that said leg exercise device can be used on open doors of different thicknesses;

c) width maintaining means for maintaining said overlap of said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly on said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly with said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said second generally L-shaped assembly being displaced a distance from said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly equal to the thickness of the open door, so that the open door is replaceably engaged therebetween;

d) a first flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm having a forward facing hook portion being replaceably hookable on the doorknob of the first side of the open door, and a flat and slender body portion being vertically movably adjustably mounted to said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly, so that said first generally L-shaped assembly is replaceably suspended from, and vertically adjustable below, the doorknob on the first side of the open door so as to allow for exercisers of different heights;

e) first height maintaining means for maintaining said first generally L-shaped assembly a preselected vertical distance below the doorknob on the first side of the open door;

f) a second flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm having a forward facing hook portion being replaceably hookable on the doorknob of the second opposing side of the open door, and a flat and slender body portion being vertically movably adjustably mounted to said flat, rectangular-shape, and wide portion of the generally L-shaped plate of the second generally L-shaped assembly, so that said second generally L-shaped assembly is replaceably suspended from, and vertically adjustable below, the doorknob on the second opposing side of the open door so as to allow for exercisers of different heights;

g) second height maintaining means for maintaining said second generally L-shaped assembly a preselected vertical distance below the doorknob on the second opposing side of the open door; and

h) a pedal assembly attached to said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly and replaceably receiving the feet of the exerciser, so that the legs of the exerciser are exercised when said pedal assembly is rotated by action of the legs of the exerciser.

2. The device as define in claim 1, wherein said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly has a flat outer surface, a horizontal and straight upper edge, a flat inner surface, a horizontal and straight lower edge, and a vertical and straight front edge from which said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly extends perpendicularly inwardly along; said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said second generally L-shaped assembly has a flat outer surface, a horizontal and straight upper edge, a flat inner surface, horizontal and straight lower edge, and a vertical and straight front edge from which said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly extends perpendicularly, inwardly along.

3. The device as defined in claim 1, wherein said generally L-shaped plate of said first generally L-shaped assembly and said generally L-shaped plate of said second generally L-shaped assembly are metallic.

4. The device as defined in claim 2, wherein said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly has a flat outer surface that is continuous with, and extends perpendicularly inwardly from, said flat outer surface of said flat, rectangular L-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly; said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly has a flat outer surface that is continuous with, and extends perpendicularly inwardly from, said flat outer surface of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said second generally L-shaped assembly.

5. The device as defined in claim 4, wherein said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly further has a horizontal and straight upper edge that is continuous with, and extends perpendicularly inwardly from, said horizontal and straight upper edge of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly; said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly further has a horizontal and straight upper edge that is continuous with, and extends perpendicularly inwardly from, said horizontal and straight upper edge of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said second generally L-shaped assembly.

6. The device as defined in claim 2, wherein said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly further has a flat inner surface that is continuous with, and extends perpendicularly inwardly from, said flat inner surface of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly; said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly further has a flat inner surface that is continuous with, and extends perpendicularly inwardly from, said flat inner surface of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said second generally L-shaped assembly.

7. The device as defined in claim 5, wherein said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly further has a horizontal and straight lower edge that is continuous with, and extends perpendicularly inwardly from, said horizontal and straight lower edge of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly; said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly further has a horizontal and straight lower edge that is continuous with, and extends perpendicularly inwardly from, said horizontal and straight lower edge of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said second generally L-shaped assembly.

8. The device as defined in claim 7, wherein said width maintaining means includes an upper horizontally-elongated width adjusting throughslot that extends through said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second, generally L-shaped assembly, in proximity of, and parallel to, said horizontal and straight upper edge of said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly; said width maintaining means further includes an upper externally threaded stud that extends perpendicularly outwardly from said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly, in proximity of said horizontal and straight upper edge of said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly; said upper externally threaded stud of said width maintaining means freely enters into, and is horizontally movable in, said upper horizontally-elongated width adjusting throughslot in said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly; said width maintaining means further includes an upper internally threaded knob that threadably engages said upper externally threaded stud of said width maintaining means, so that said first generally L-shaped assembly and said second generally L-shaped assembly are prevented from separating from each other and maintained against the open door.

9. The device as defined in claim 8, wherein said width maintaining means further includes a lower horizontally-elongated width adjusting throughslot that extends through said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly, in proximity of, and parallel to, said horizontal and straight lower edge of said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly; said width maintaining means further includes a lower externally threaded stud that extends perpendicularly outwardly from said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly, in proximity of said horizontal and straight lower edge of said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly; said lower externally threaded stud of said width maintaining means freely enters into, and is horizontally movable in, said lower horizontally-elongated width adjusting throughslot in said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly; said width maintaining means further includes a lower internally threaded knob that threadably engages said lower externally threaded stud of said width maintaining means, so that said first generally L-shaped assembly and said second generally L-shaped assembly are further prevented from separating from each other and further maintained against the open door.

10. The device as defined in claim 2, wherein said first generally L-shaped assembly further includes a rectangular-shaped cushion pad that is deformable and attached to, and covers entirety of, said flat inner surface of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly, so that said rectangular-shaped cushion pad of said first generally L-shaped assembly can deform to match the contour of the first side of the open door on which said generally L-shaped plate of said first generally L-shaped assembly abuts against and thereby provides a more secure fit for said generally L-shaped plate of said first generally L-shaped assembly while protecting the first side of the open door from possible damage thereto caused by said generally L-shaped plate of said first generally L-shaped assembly; said second generally L-shaped assembly further includes a rectangular-shaped cushion pad that is deformable and attached to, and covers entirety of, said flat inner surface of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said second generally L-shaped assembly, so that said rectangular-shaped cushion pad of said second generally L-shaped assembly can deform to match the contour of the second opposing side of the open door on which said generally L-shaped plate of said second generally L-shaped assembly abuts against and thereby provides a more secure fit for said generally L-shaped plate of said second generally L-shaped assembly while protecting the second opposing side of the open door from possible damage thereto caused by said generally L-shaped plate of said second generally L-shaped assembly.

11. The device as defined in claim 10, wherein said rectangular-shaped cushion pad of said first generally L-shaped assembly and said rectangular-shaped cushion pad of said second generally L-shaped assembly are cloth.

12. The device as defined in claim 2, wherein said first height maintaining means includes a rectangular-parallelepiped-shaped housing that is replaceably attached to said outer surface of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly and has a rectangular-shaped side with a center, a rectangular-shaped top with a center, and a rectangular-shaped bottom with a center; said second height maintaining means includes a rectangular-parallelepiped-shaped housing that is replaceably attached to said outer surface of said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said second generally L-shaped assembly and has a rectangular-shaped side with a center, a rectangular-shaped top with a center, and a rectangular-shaped bottom with a center.

13. The device as defined in claim 12, wherein said rectangular-parallelepiped-shaped housing of said first height maintaining means has a rectangular-parallelepiped-shaped and vertically-oriented throughslot that opens into, and extends from, said center of said rectangular-shaped top of said rectangular-parallelepiped-shaped housing of said first height maintaining means vertically downwardly to, and opens into, said center of said rectangular-shaped bottom of said rectangular-parallelepiped-shaped housing of said first height maintaining means; said rectangular-parallelepiped-shaped housing of said second height maintaining means has a rectangular-parallelepiped-shaped and vertically-oriented throughslot that opens into, and extends from, said center of said rectangular-shaped top of said rectangular-parallelepiped-shaped housing of said second height maintaining means vertically downwardly to, and opens into, said center of said rectangular-shaped bottom of said rectangular-parallelepiped-shaped housing of said second height maintaining means.

14. The device as defined in claim 13, wherein said rectangular-parallelepiped-shaped housing of said first height maintaining means further has a threaded throughbore that opens into, and extends from said center of said rectangular-shaped side of said rectangular-parallelepiped-shaped housing of said first height maintaining means horizontally inwardly to, and opens into, said rectangular-parallelepiped-shaped and vertically-oriented throughslot in said rectangular-parallelepiped-shaped housing of said first height adjusting means, so that said threaded throughbore in said center of said rectangular-shaped side of said rectangular-parallelepiped-shaped housing of said first height maintaining means is in communication with said rectangular-parallelepiped-shaped and vertically-oriented throughslot in said rectangular-parallelepiped-shaped housing of said first height maintaining means; said rectangular-parallelepiped-shaped housing of said second height maintaining means further has a threaded throughbore that opens into, and extends from said center of said rectangular-shaped side of said rectangular-parallelepiped-shaped housing of said second height maintaining means horizontally inwardly to, and opens into, said rectangular-parallelepiped-shaped and vertically-oriented throughslot in said rectangular-parallelepiped-shaped housing of said second height adjusting means, so that said threaded throughbore in said center of said rectangular-shaped side of said rectangular-parallelepiped-shaped housing of said second height maintaining means is in communication with said rectangular-parallelepiped-shaped and vertically-oriented throughslot in said rectangular-parallelepiped-shaped housing of said second height maintaining means.

15. The device as defined in claim 14, wherein said flat and slender body portion of said first flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm moves vertically in said rectangular-parallelepiped-shaped and vertically-oriented throughslot in said rectangular-parallelepiped-shaped housing of said first height maintaining means; said flat and slender body portion of said second flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm moves vertically in said rectangular-parallelepiped-shaped and vertically-oriented throughslot in said rectangular-parallelepiped-shaped housing of said second height maintaining means.

16. The device as defined in claim 15, wherein said flat and slender body portion of said first flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm has an outer surface with a plurality of vertically spaced-apart detents therealong; said flat and slender body portion of said second flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm has an outer surface with a plurality of vertically spaced-apart detents therealong.

17. The device as defined in claim 16, wherein said first height maintaining means further includes an externally threaded knob that threadably engages said threaded throughbore in said center of said rectangular-shaped side of said rectangular-parallelepiped-shaped housing of said first height maintaining means, and abuts snugly in a selected detent of said plurality of spaced-apart and vertically oriented detents in said flat outer surface of said flat and slender body portion of said first flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm, so that said first generally L-shaped assembly can be maintained a comfortable distance below the doorknob on the first side of the open door which is dependent upon the height of the exerciser; said second height maintaining means further includes an externally threaded knob that threadably engages said threaded throughbore in said center of said rectangular-shaped side of said rectangular-parallelepiped-shaped housing of said second height maintaining means, and abuts snugly in a selected detent of said plurality of spaced-apart and vertically oriented detents in said flat outer surface of said flat and slender body portion of said second flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm, so that said second generally L-shaped assembly can be maintained a comfortable distance below the doorknob on the second opposing side of the open door which is dependent upon the height of the exerciser.

18. The device as defined in claim 4, wherein said pedal assembly includes a circular-cylindrically-shaped and horizontally-oriented housing that is welded horizontally, at a circular-cylindrically-shaped longitudinal side thereof, to said flat outer surface of said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly, between said upper horizontally-elongated width adjusting throughslot in said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly and said lower horizontally-elongated width adjusting: throughslot in said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly.

19. The device as defined in claim 18, wherein said circular-cylindrically-shaped and horizontally-oriented housing of said pedal assembly further has a pair of ends, a horizontal throughbore that extends longitudinally therethrough and opens into said pair of ends of said circular-cylindrically-shaped and horizontally-oriented housing of said pedal assembly, and a threaded and radially-oriented throughbore that extends radially inwardly from, and opens into, an accessible portion of said circular-cylindrically-shaped longitudinal side of said circular-cylindrically-shaped and horizontally-oriented housing of said pedal assembly to, and opens into, said horizontal throughbore in said circular-cylindrically-shaped and horizontally-oriented housing of said pedal assembly, so that said threaded and radially-oriented throughbore in said circular-cylindrically-shaped and horizontally-oriented housing of said pedal assembly is in communication with said horizontal throughbore in said circular-cylindrically-shaped and horizontally-oriented housing of said pedal assembly.

20. The device as defined in claim 19, wherein said pedal assembly further includes a substantially Z-shaped crank with square bends that has an elongated, slender, and cylindrically-shaped intermediate portion that is rotatively mounted, at a center thereof, in said horizontal throughbore in said circular-cylindrically-shaped and horizontally-oriented housing of said pedal assembly, with bearings therebetween; said pedal assembly substantially Z-shaped crank with square bends of said pedal assembly further has a pair of parallel, elongated, slender, and cylindrically-shaped end portions; each end portion of said pair of parallel, elongated, slender, and cylindrically-shaped end portions of said substantially Z-shaped crank with square bends of said pedal assembly extends perpendicularly outwardly from an end of said elongated, slender, and cylindrically-shaped intermediate portion of said substantially Z-shaped crank with square bends of said pedal assembly, in opposite directions from each other, and has a free end.

21. The device as defined in claim 20, wherein said free end of each end portion of said pair of parallel, elongated, slender, and cylindrically-shaped end portions of said substantially Z-shaped crank with square bends of said pedal assembly has rotatively disposed thereon, a foot pedal sub-assembly that is rotatable on an axis parallel to said elongated, slender, and cylindrically-shaped intermediate portion of said substantially Z-shaped crank with square bends of said pedal assembly.

22. The device as defined in claim 21, wherein each foot pedal sub-assembly of said pedal assembly includes a pedal that is rotatively attached to said free end of each end portion of said pair of parallel, elongated, slender, and cylindrically-shaped end portions of said substantially Z-shaped crank with square bends of said pedal assembly, so that the feet of the legs of the exerciser can rest thereon during exercising, and an elastic strap that is attached at ends thereof to said pedal of each said foot pedal sub-assembly of said pedal assembly, so that the feet of the legs of the exerciser can be releasably maintained in each said foot pedal sub-assembly of said pedal assembly.

23. The device as defined in claim 20, wherein said pedal assembly further includes an externally threaded tension adjusting knob that threadably engages said threaded and radially-oriented throughbore in said circular-cylindrically-shaped and horizontally-oriented housing of said pedal assembly, and abuts with selective tension against, said center of said elongated, slender, and cylindrically-shaped intermediate portion of said substantially Z-shaped crank with square bends of said pedal assembly, so that amount of resistance applied to said pedal assembly can be varied.

24. The device as defined in claim 18; further comprising an electronic timing device disposed on said flat outer surface of said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly, between said upper horizontally-elongated width adjusting throughslot in said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly and said circular-cylindrically-shaped and horizontally-oriented housing of said pedal assembly, so that said electronic timing device is easily visible during exercising so as to allow length of a workout to be easily monitored.

25. The device as defined in claim 24, wherein said electronic timing device has an alarm that can be preset to sound when a preselected workout time has been reached.

26. The device as defined in claim 1; further comprising a floor pad positionable on a floor, so that the exerciser can rest comfortably thereon during exercising; said floor pad having a wedge shaped door stop end wedgable between the free lower horizontal edge of the open door and the floor, so that the open door is maintained in an open position, and a head rest end, so that the head of the exerciser can comfortably rest thereon during exercising.

27. A method of utilizing a leg exercise device that is replaceably attachable to an open door having a free lower horizontal edge, a thickness, a first side with a doorknob extending therefrom, and a second opposing side with a doorknob extending therefrom and being opposite to the first side of the open door, comprising the steps of:

a) opening the door;

b) positioning a floor pad of said leg exercise device on a floor, inline with the open door;

c) wedging a wedge shaped door stop end of said floor pad between the free lower horizontal edge of the open door and the floor, so that the open door in maintained in an open position;

d) loosening an upper internally threaded width maintaining knob of said leg exercise device, so that said leg exercise device can be adjusted to the thickness of the open door;

e) loosening a lower internally threaded width maintaining knob of said leg exercise device, so that said leg exercise device can be further adjusted to the thickness of the open door;

f) moving a first generally L-shaped assembly of said leg exercise device and a second generally L-shaped assembly of said leg exercise device relative to each other, so that said leg exercise device can be further adjusted to the thickness of the open door;

g) straddling the free vertical edge of the open door with said first generally L-shaped assembly and said second generally L-shaped assembly, so that said leg exercise device is positioned on the open door;

h) hooking a forward-facing hook portion of a first flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm of said leg exercise device onto the doorknob on the first side of the open door, so that said leg exercise device is suspended from the doorknob on the first side of the open door;

i) hooking a forward-facing hook portion of a second flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm of said leg exercise device onto the doorknob on the second opposing side of the open door, so that said leg exercise device is further suspended from the doorknob on the second opposing side of the open door;

j) loosening an externally threaded knob of said first generally L-shaped assembly, so that said leg exercise device can be adjusted to a comfortable vertical position on the first side of the open door which is dependent upon height of an exerciser;

k) loosening an externally threaded knob of said second generally L-shaped assembly, so that said leg exercise device can be further adjusted to a comfortable vertical position on the second opposing side of the open door which is dependent upon the height of the exerciser;

l) sliding said first generally L-shaped assembly vertically along a flat and slender body portion of said first flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm to the comfortable vertical position on the first side of the open door, so that said leg exercise device is adjusted to the comfortable vertical position on the first side of the open door;

m) sliding said second generally L-shaped assembly vertically along a flat and slender body portion of said second flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm to the comfortable vertical position on the second opposing side of the open door, so that said leg exercise device is further adjusted to the comfortable vertical position on the second opposing side of the open door;

n) tightening said externally threaded knob of said first generally L-shaped assembly until it engages snugly in an appropriate detent of a plurality of vertically spaced-apart detents in a flat outer surface of said flat and slender body portion of said first flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm, so that said leg exercise device is maintained at the comfortable vertical position on the first side of the open door;

o) tightening said externally threaded knob of said second generally L-shaped assembly until it engages snugly in an appropriate detent of a plurality of vertically spaced-apart detentsin a flat outer surface of said flat and slender body portion of said second flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm, so that said leg exercise device is further maintained at the comfortable vertical position on the second opposing side of the open door;

p) moving said first generally L-shaped assembly and said second generally L-shaped assembly relative to each other until said first generally L-shaped assembly abuts against the first side of the open door and the free vertical edge of the open door, and said second generally L-shaped assembly abuts against said second opposing side of the open door and overlaps a part of said second generally L-shaped assembly, so that said leg exercise device is adjusted to the thickness of the open door;

q) tightening said upper internally threaded width maintaining knob, so that said leg exercise device is maintained at the thickness of the open door;

r) tightening said lower internally threaded width maintaining knob, so that said leg exercise device is further maintained at the thickness of the open door;

s) lying the exerciser down on said floor pad with a head of the exerciser resting comfortably on a head rest end of said floor pad, so that the exerciser can comfortably exercise;

t) engaging each foot of feet of legs of the exerciser in each foot pedal sub-assembly of a pedal assembly of said leg exercise device, so that the feet of the legs of the exerciser straddle the open door; and

u) rotating a substantially Z-shaped crank with square bends of said pedal assembly, so that the legs of the exerciser are being exercised.

28. The method as defined in claim 27; further comprising the step of varying the distance that a torso of the exerciser is from the open door, so that different amounts of resistance can be applied.

29. The method as defined in claim 27; further comprising the steps of threading am externally threaded tension adjusting knob relative to a threaded and radially-oriented throughbore in a circular-cylindrically-shaped and horizontally-oriented housing of said pedal assembly; and abutting, with selective tension, said externally threaded tension adjusting knob against a center of an elongated, slender, and cylindrically-shaped intermediate portion of said substantially Z-shaped crank with square bends of said pedal assembly, so that amount of resistance applied to said pedal assembly can be varied.

30. A method of exercising at least one leg of an exerciser, comprising the step of exercising with a leg exercise device which comprises:

a) a first generally L-shaped assembly having a generally L-shaped plate with a flat, rectangular-shaped, and wide portion abuttable against a first side of an open door below a doorknob on the first side of the open door, and a flat, rectangular-shaped, and narrow portion being narrower than, and extending perpendicularly inwardly from, the flat, rectangular-shaped, and wide portion of the generally L-shaped plate of the first generally L-shaped assembly and being abuttable against a free vertical edge of the open door;

b) a second generally L-shaped assembly having a generally L-shaped plate with a flat, rectangular-shaped, and wide portion abuttable against a second opposing side of the open door below a doorknob on the second opposing side of the open door, and a flat, rectangular-shaped, and narrow portion being narrower than, and extending perpendicularly inwardly from the flat, rectangular-shaped, and wide portion of the generally L-shaped plate of the second generally L-shaped assembly and over, lapping said flat, rectangular shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly and being horizontally adjustable therewith, so that said leg exercise device can be used on open doors of different thicknesses;

c) width maintaining means for maintaining said overlap of said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly on said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said first generally L-shaped assembly with said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said second generally L-shaped assembly being displaced a distance from said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly equal to thickness of the open door, so that the open door is replaceably engaged therebetween;

d) a first flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm having a forward facing hook portion being replaceably hookable on the doorknob on the first side of the open door, and a flat and slender body portion being vertically movably adjustably mounted to said flat, rectangular-shaped, and wide portion of said generally L-shaped plate of said first generally L-shaped assembly, so that said first generally L-shaped assembly is replaceably suspended from, and vertically adjustable below, the doorknob on the first side of the open door so as to allow for exercisers of different heights;

e) first height maintaining means for maintaining said first generally L-shaped assembly a preselected vertical distance below the doorknob on the first side of the open door;

f) a second flat, vertically-oriented, forwardly-facing, and inverted J-shaped height adjusting arm having a forward facing hook portion being replaceably hookable on the doorknob on the second opposing side of the open door, and a flat and slender body portion being vertically movably adjustably mounted to said flat, rectangular-shaped, and wide portion of the generally L-shaped plate of the second generally L-shaped assembly, so that said second generally L-shaped assembly is replaceably suspended from, and vertically adjustable below, the doorknob on the second opposing side of the open door so as to allow for exercisers of different heights;

g) second height maintaining means for maintaining said second generally L-shaped assembly a preselected vertical distance below the doorknob on the second opposing side of the open door; and

h) a pedal assembly attached to said flat, rectangular-shaped, and narrow portion of said generally L-shaped plate of said second generally L-shaped assembly and replaceably receiving feet of an exerciser, so that legs of the exerciser are exercised when said pedal assembly is rotated by action of the legs of the exerciser.