Patent ID: 7125366

Claim:
A sit up exercising apparatus comprising: a seat assembly comprising a front leg being an inverted spread U-shape and having a distal end; a proximal end; a flat middle section; a front foot connected transversely to the distal end of the front leg and comprising a pipe connected transversely to the distal end of the front leg and having two ends; and two caps mounted respectively on the ends of the pipe; a forked connector formed at the proximal end of the front leg and having two tines; and two pivot holes defined respectively in the tines and align with each other; a cushioned seat mounted on the flat middle section of the front leg and having two sides; and a rear leg connected to the front leg and having a distal end; a rear foot connected transversely to the distal end of the rear leg and comprising a pipe connected transversely to the distal end of the rear leg and having two ends; and two caps mounted respectively on the ends of the pipe; a forked proximal end having two tines; and a gap formed between the tines; two sleeves connected respectively to and protruding from the tines of the forked proximal end and mounted respectively over and connected to the tines of the forked connector of the front leg; an adjusting device mounted between the tines of the forked proximal end of the rear leg and comprising an extension rod and an adjustment knob; and a stationary mounting rod mounted through and protruding out transversely from the rear leg between the forked proximal end and the distal end; an actuating bar mounted pivotally between the tines of the forked connector and comprising a proximal end; a distal end; opposite sides; a movable mounting rod mounted transversely through the proximal end of the actuating bar; two pivot pins connected to and protruding from opposite sides of the actuating bar between the proximal end and the distal end and corresponding to and mounted respectively in the two pivot holes in the tines of the forked connector of the front leg; and multiple rollers connected to and protruding out transversely from the actuating bar near the distal end for massaging a person leaning against the rollers and operating the sit-up exercising apparatus; and two elastic members, each elastic member connected to the stationary mounting rod and the movable mounting rod and having two ends; and two holes formed respectively near the ends to the stationary and movable mounting rods.