Shock absorber for a bicycle

Details Shock absorber for a bicycle Shock absorber for a bicycle

1995-12-05

1998-01-27

Poon, Peter M.

Spring devices

Vehicle

Mechanical spring and nonresilient retarder

267 6415, 267 6428, 18832221, 18832215, F16F 943, F16F 914

Patent

active

057115141

ABSTRACT:
A bicycle shock absorber includes a cylinder body which confines a sealed space therein and a valve member which is disposed movably in the cylinder body and which divides the sealed space of the cylinder body into an air chamber that contains high pressure gas, and a fluid chamber that is filled with hydraulic fluid. The cylinder body is formed with a vent hole to access the air chamber and has a plug for sealing the vent hole after the high pressure gas has been introduced into the air chamber. A piston shaft has a connecting section which extends into the fluid chamber, and a piston is retained on the connecting section of the piston shaft and is formed with a plurality of axially extending fluid holes therethrough. A restoring member is disposed outside the cylinder body and is associated operably with the piston shaft and the cylinder body so as to bias the piston shaft outwardly of the cylinder body.

REFERENCES:
patent: 4503951 (1985-03-01), Imaizumi
patent: 4616810 (1986-10-01), Richardson et al.
patent: 4854429 (1989-08-01), Casey
patent: 5044614 (1991-09-01), Rau
patent: 5097928 (1992-03-01), Enders et al.
patent: 5150775 (1992-09-01), Charles et al.
patent: 5372224 (1994-12-01), Samonil et al.
patent: 5400880 (1995-03-01), Ryan

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