Exercise devices – Involving user translation or physical simulation thereof – Bicycling
Patent
1998-06-03
1998-12-15
Crow, Stephen R.
Exercise devices
Involving user translation or physical simulation thereof
Bicycling
188164, A63B 2206, B60L 700
Patent
active
058489533
ABSTRACT:
A wheel-type resistance device includes a flywheel rotated with a hub member around an axle and having an accommodation chamber with a first circumferential portion which is provided with a magnetically attractive member. A dragging force adjusting member is mounted on the axle and has a second circumferential portion registered with the first circumferential portion. Upper and lower magnetic members are disposed movably on the second circumferential portion and are spaced apart from and are in symmetry with each other relative to a horizontal line transverse to an axial direction defined by the axle. Linear movement of the upper and lower magnetic members toward the horizontal line along a transverse direction relative to the horizontal line is actuated by an actuating member so as to decrease the extent of overlapping of the upper and lower magnetic members with the second circumferential portion. In addition, keyways are disposed on the dragging force adjusting member and extend in the transverse direction for receiving and guiding keys formed on the upper and lower magnetic members to assure the linear movement for generating an even magnetic dragging force. A biasing member is provided to bias the upper and lower magnetic members against the linear movement.
REFERENCES:
patent: 4146806 (1979-03-01), Katsumata
patent: 4550697 (1985-11-01), Campen
patent: 5072930 (1991-12-01), Sun
patent: 5236069 (1993-08-01), Peng
patent: 5247854 (1993-09-01), Wu
patent: 5586624 (1996-12-01), Ko et al.
Wei Mike
Wu Sheng-Jung
LandOfFree
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