Back twister

Details Back twister Back twister

2011-01-25

2011-01-25

Crow, Steve R (Department: 3764)

Exercise devices

Involving user translation or physical simulation thereof

Stair climbing

Reexamination Certificate

active

07874960

ABSTRACT:
A Back Twister comprises:a horizontal supporting platform1with attached bearing structure6,an elliptical stepper with two footholds3attached to the horizontal supporting platform1a hand rotary member with two hand grips7attached to the bearing structure6,a kinematic transmission8connecting the elliptical stepper and hand rotary member such that they are rotatable in synchronisation with a 1:1 gear ratio and the user having steady position may perform an elliptical motion with feet and circular motion with hands while keeping his/her torso suspended freely above the bearing structure whereby the only support for the users body are the footholds and hand grips, which provides good exercising for muscles and joints of the spinal column,The distance between the elliptical stepper and hand rotary member is adjustable, to suit different sized users.

REFERENCES:
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patent: 5342262 (1994-08-01), Hansen
patent: 5397286 (1995-03-01), Chang
patent: 6837829 (2005-01-01), Eschenbach
patent: 7402126 (2008-07-01), Chang
patent: 2349099 (2000-10-01), None
patent: 2371997 (2002-08-01), None

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