Land vehicles – Wheeled – Occupant propelled type
Patent
1979-04-16
1981-10-20
Silverstrim, John P.
Land vehicles
Wheeled
Occupant propelled type
188272, 280703, B62K 2508
Patent
active
042956587
ABSTRACT:
A telescopic shock absorber (14) disposed between a front wheel (19) and frame (12) of a motorcycle (11) is formed with first and second fluid chambers (38), (39), hydraulic fluid flowing from the first chamber (38) to the second chamber (39) upon compression of the shock absorber (14) for shock absorption. A normally closed check valve (57) is disposed between the first and second chambers (38), (39) and urged to open by fluid pressure in the first chamber (38). The shock absorber (14) is urged to compress in response to inertial forces acting on the motorcycle (11) resulting from application of braking force applied to the motorcycle (11) by a front wheel brake (23) causing the pressure in the first chamber (38) to increase by a corresponding amount. An actuator (63) responsive to the degree of braking force increases the pressure required to open the valve (57) in such a manner as to be equal to the pressure in the first chamber (38) resulting from application of the braking force. This prevents the shock absorber (14) from being compressed by the inertial forces caused by braking, but allows the shock absorber (14) to be compressed in response to irregularities in the road surface in a normal manner so that the shock absorbing function during braking is the same as when braking is not applied. An arrangement (82), (84), (86), (89), (91) is provided to adjust the shock absorbing effect to accomodate brake wear and the individual preferences of operators.
REFERENCES:
patent: 2131014 (1938-09-01), Sanford
patent: 3399905 (1968-09-01), Vogel
patent: 3989261 (1976-11-01), Kawaguchi
patent: 4145067 (1979-03-01), Ceriani
Alexander David G.
Kayaba Kogyo Kabushiki Kaisha
Silverstrim John P.
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