Resistance apparatus for a waist-twisting exerciser

Details Resistance apparatus for a waist-twisting exerciser Resistance apparatus for a waist-twisting exerciser

2011-06-21

2011-06-21

Donnelly, Jerome W (Department: 3764)

Exercise devices

Support for entire body of user

Swivelled foot platform

C482S147000, C482S071000

Reexamination Certificate

active

07963897

ABSTRACT:
A resistance apparatus for a waist-twisting exerciser wherein the resistance apparatus includes a spring and an adjuster with a pulley block. The adjuster is mounted on a swing element while the spring is fixed at a proper position of the swing element such that the spring is correctly engaged into the pulley block of the adjuster. In applying force to the swing element in motion, the spring may be pulled to create an effective exercise resistance force for increasing the exercise effect. Moreover, the position of the adjuster is adjustable for changing the tension of the spring.

REFERENCES:
patent: 2906532 (1959-09-01), Echols
patent: 4799475 (1989-01-01), Iams et al.
patent: 5433690 (1995-07-01), Gilman

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