Exercise devices – Sit up device
Patent
1997-05-13
1998-07-14
Reichard, Lynne A.
Exercise devices
Sit up device
482128, 482122, 482129, A63B 2102
Patent
active
057799873
ABSTRACT:
The present invention relates to an abdomen training device, comprising: a base frame, carrying a positioning frame, with a support being mounted on the positioning frame; and an abdomen training element, mounted on the support and further comprising an accommodating part, a spring, inserted into the accommodating part close to the front end thereof, a gliding bar, inserted into the accommodating part, the front end of the gliding bar leaning against the rear end of the spring, the rear end of the gliding bar extending beyond the rear end of the accommodating part, the gliding bar gliding inside the accommodating part along the longitudinal axis, and a rest plate, attached to the rear end of the gliding bar, having a rear surface, which is pressed against by the abdomen of a user; wherein during an exercise the user, contracting her or his abdominal muscles, pushes the rest plate and the gliding bar towards the front end of the abdomen training element against an elastic force caused by the spring and subsequently, releasing her or his abdominal muscles, allows the rest plate to return.
REFERENCES:
patent: 4830367 (1989-05-01), Foran
patent: 5069444 (1991-12-01), Wilkinson
patent: 5094450 (1992-03-01), Stearns
patent: 5256126 (1993-10-01), Grotstein
patent: 5441473 (1995-08-01), Safani et al.
patent: 5616109 (1997-04-01), Szu-Ming
patent: 5669863 (1997-09-01), Ho
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