Elliptical motion exercise apparatus

Details Elliptical motion exercise apparatus Elliptical motion exercise apparatus

1997-04-04

1999-03-02

Crow, Stephen R.

Exercise devices

Involving user translation or physical simulation thereof

A63B 2200

Patent

active

058763074

ABSTRACT:
A four bar linkage is interconnected between a crank and a force receiving member. The linkage links rotation of the crank to generally elliptical movement of the force receiving member. The linkage includes a first link having a first end rotatably connected to the crank; a second link having a first end rotatably connected to a second, opposite end of the first link, an intermediate portion rotatably connected to the frame, and a second, opposite end rotatably connected to an intermediate portion of a fourth link; a third link having a first end rotatably connected to an intermediate portion of the first link, and a second, opposite end rotatably connected to a first end of the fourth link; and a force receiving member connected to at least one of the first link, the second link, the third link, and the fourth link.

REFERENCES:
patent: 5039088 (1991-08-01), Shifferen
patent: 5279529 (1994-01-01), Eschenbach
patent: 5290211 (1994-03-01), Stearns
patent: 5499956 (1996-03-01), Habing et al.
patent: 5577985 (1996-11-01), Miller
patent: 5605521 (1997-02-01), Hsieh
patent: 5624354 (1997-04-01), Chen
patent: 5707321 (1998-01-01), Maresh

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