Compression isolator for a suspension damper

Patent metadata

Field	Value
Publication number	US-9366307-B2
Application number	US-201514692401-A
Country	US
Kind code	B2
Filing date	Apr 21, 2015
Priority date	Jan 7, 2009
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

A method and apparatus for a damper. The damper comprises a fluid chamber having a piston dividing the chamber into a compression and rebound sides, a reservoir in fluid communication with the compression side of the chamber, and an isolator disposed between the compression side and the reservoir, whereby the isolator obstructs fluid flow between the compression side and the reservoir. In one embodiment, a bypass provides a fluid path between the compression side and the isolator.

First claim

What I claim is:

1. A vehicle suspension comprising:
a main damper comprising:
a fluid chamber enclosed by a wall, said fluid chamber comprising:
a compression side;
a rebound side; and
a piston dividing said fluid chamber into said compression side and said rebound side, wherein said piston comprises a first fluid pathway enabling fluid communication between said compression said and said rebound side;

a bypass chamber providing a second fluid pathway between said compression side and said rebound side, said bypass chamber being in fluid communication with said fluid chamber via a set of ports disposed in said wall of said fluid chamber; and
a compression isolator between said compression side and a fluid reservoir, and

a chamber connected to said main damper via a fluid hose, said chamber comprising said fluid reservoir, wherein said fluid reservoir comprises a floating piston that movably seals a fluid-fillable portion of said fluid reservoir from a gas pocket of said vehicle suspension, wherein said fluid-fillable portion of said fluid reservoir collects fluid from said bypass chamber, via a third fluid pathway, as a fluid capacity of said compression side of said fluid chamber decreases during a compression stroke, wherein said floating piston transfers pressure between fluid in said fluid-fillable portion of said fluid reservoir and said gas pocket, wherein said third fluid pathway is disposed between said compression isolator and said fluid fillable portion.

Assignees

• Fox Factory Inc

Inventors

• Marking John

Classifications

• F16F9/346

  Throttling passages in the form of slots arranged in cylinder walls · CPC title

• B60G13/08

  hydraulic · CPC title

• F16F9/3235

  of cylinders (F16F9/483 takes precedence) · CPC title

• F16F9/48 Primary

  Arrangements for providing different damping effects at different parts of the stroke ({F16F9/346, F16F9/516} , F16F9/53 take precedence) · CPC title

• F16F9/065

  Expansion chamber provided on the upper or lower end of a damper, separately there from or laterally on the damper · CPC title