Suspension bicycle

Patent 5121937 Issued on June 16, 1992. Estimated Expiration Date:

December 13, 2010. 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.

Abstract Claims Description Full Text

Patent References

Motorcycle suspension systems
Patent #: 4058181
Issued on: 11/15/1977
Inventor: Buell

Suspension system for wheel of a motor bike
Patent #: 4114918
Issued on: 09/19/1978
Inventor: Lutz

Drive wheel suspension system for motorcycle
Patent #: 4463824
Issued on: 08/07/1984
Inventor: Boyesen

Rear suspension mechanism for motorcycle
Patent #: 4596302
Issued on: 06/24/1986
Inventor: Suzuki , et al.

Suspension bicycle
Patent #: 4789174
Issued on: 12/06/1988
Inventor: Lawwill

Rear wheel suspension mechanism for motorcycles and the like vehicles
Patent #: 4951791
Issued on: 08/28/1990
Inventor: Belil Creixelli

Bicycle having rear shock absorbing arrangement and improved shock absorber for bicycles Patent #: 5000470
Issued on: 03/19/1991
Inventor: Kamler, et al.

Inventor

Lawwill, Mert

Application

No. 626998 filed on 12/13/1990

US Classes:

280/284, Rear forks180/227Including resilient means for mounting driven wheel

Examiners

Primary: Marmor, Charles A.
Assistant: Hurley, Kevin

Attorney, Agent or Firm

Eakin; James E.

Foreign Patent References

841661 FR 08/13/2012

International Classes

B62K 025/04
B60G 015/00

Abstract

A suspension bicycle includes swing arms, control arms and hub plates connected to the seat riser tube of the frame in a trapezoidal arrangement balanced to offset forces applied to the rear wheel by the chain to prevent absorption of pedaling energy by the suspension system while still permitting the suspension system to be responsive to changes in road conditions.