Adjustable magnetic resistance mechanism for upright bikes

Details Adjustable magnetic resistance mechanism for upright bikes Adjustable magnetic resistance mechanism for upright bikes

2006-07-18

2006-07-18

Crow, Stephen R. (Department: 3764)

Exercise devices

Involving user translation or physical simulation thereof

Bicycling

Reexamination Certificate

active

07077789

ABSTRACT:
An adjustable magnetic resistance mechanism of an upright bike includes a fan-shaped adjustment board which is pivotably connected to the bike's frame and a magnet unit is connected to a distal end of the adjustment board. A connection board is connected to the adjustment board and a shaft of the flywheel extends through a curve slot of the adjustment board. Two ends of the shaft are supported on two support plates on two upright posts of the upright bike. An axle extends through a pivot hole in the adjustment board and the connection board. A resilient member is connected between the connection board and the adjustment board. The adjustment board is pivoted about the axle to adjust the gap between the flywheel and the magnet unit on the adjustment board.

REFERENCES:
patent: 3831942 (1974-08-01), Del Mar
patent: 5031901 (1991-07-01), Saarinen
patent: 5094447 (1992-03-01), Wang
patent: 5310392 (1994-05-01), Lo
patent: 5466203 (1995-11-01), Chen
patent: 6095953 (2000-08-01), Lee et al.
patent: 6569063 (2003-05-01), Chen
patent: 6626804 (2003-09-01), Wang et al.

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