Abdominal weight lifting apparatus

Details Abdominal weight lifting apparatus Abdominal weight lifting apparatus

1981-05-06

1983-06-14

Pinkham, Richard C.

Undertaking

272134, A63B 2100

Patent

active

043878938

ABSTRACT:
An exercising apparatus in which the body is supported while being restricted to rotary movement of upper and lower torso portions one relative to the other. Restriction of movement isolates the abdominal muscle group while accomplishing "full range" exercise as herein defined.
The apparatus includes an upper torso engaging backrest and a lower torso engaging backrest and seat so that the user is supported in a generally seated position. Weights and a variable cam provide a variable resistance force to pivotal movement when the upper torso engaging backrest and the lower torso engaging backrest and seat are moved toward and away from each other.

REFERENCES:
patent: 1969901 (1934-08-01), Pilates
patent: 3858873 (1975-01-01), Jones
patent: 4256302 (1981-03-01), Keiser et al.

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