Exercise devices – Sit up device
Patent
1997-12-05
1999-01-26
Donnelly, Jerome
Exercise devices
Sit up device
482142, 482907, A63B 2302
Patent
active
058632808
ABSTRACT:
A multi-purpose exerciser which includes a U-shaped base frame having two smoothly arched parallel ends and a back pad on the middle, an axle transversely mounted in the U-shaped base frame to hold a pair of pulleys outside the base frame and an elongated polyurethane rollers within the base frame for supporting the user's hips, a T-bar pivoted to the back pad and holding a pair of pulleys, a support frame bar adapted to support the back pad on the floor, the support frame bar having a bottom end holding a supporting wheel for supporting on the floor, a guide pulley mounted on the support frame bar, a handlebar having two locating members near two opposite ends thereof, a pull rope inserted through the guide pulley with its two opposite ends respectively passed through the pulleys on the axle then the pulleys on the T-bar and then coupled to the two locating members on the handlebar by a respective adjusting clamp, and two stop members bilaterally fastened to the pull rope and spaced between the pulleys on the T-bar and the locating members on the handlebar.
REFERENCES:
patent: 4706953 (1987-11-01), Graham
patent: 5267926 (1993-12-01), Schaefer
patent: 5492520 (1996-02-01), Brown
patent: 5591111 (1997-01-01), Wang et al.
patent: 5632710 (1997-05-01), England
patent: 5702334 (1997-12-01), Lee
patent: 5711749 (1998-01-01), Millers
patent: 5728035 (1998-03-01), Sands
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