U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Rear suspension system for motorcycles

Patent 4506755 Issued on March 26, 1985. Estimated Expiration Date: Icon_subject December 10, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Vehicle wheel suspension device
Patent #: 4076271
Issued on: 02/28/1978
Inventor: Doncque

Rear wheel suspension for a motorcycle
Patent #: 4322088
Issued on: 03/30/1982
Inventor: Miyakoshi ,   et al.

Shock absorbing device for rear wheel of motorcycle Patent #: 4360214
Issued on: 11/23/1982
Inventor: Isono

Inventors

Application

No. 06/448643 filed on 12/10/1982

US Classes:

180/227, Including resilient means for mounting driven wheel280/284Rear forks

Examiners

Primary: Peters, Joseph F. Jr.
Assistant: Fugate, D. Lynn

International Classes

B62K 25/28 (20060101)
B62K 25/04 (20060101)

Foreign Application Priority Data

1981-12-11 JP

Abstract

A rear suspension system in a motorcycle having a body frame and a rear wheel. The rear suspension system comprises a rear wheel supporting member swingably pivoted at its front end to the body frame and pivotably supporting at its rear end the rear wheel, a damper pivoted to the body frame, and a progressive link mechanism having first and second pivot points pivoted to the damper and the rear wheel supporting member, respectively. The progressive link mechanism progressively transmits the movement of the second pivot point to the first pivot point, and is disposed substantially above the rear wheel supporting member. Auxiliary devices such as a muffler and a stand can be effectively disposed below the rear wheel supporting member and at the same time a required bank angle is attained.

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