The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 1981
Filed:
Apr. 16, 1979
Mitsuhiro Kashima, Gifu, JP;
Kayaba Kogyo Kabushiki Kaisha, Tokyo, JP;
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.