Damper with pressure-sensitive compression damping

Patent metadata

Field	Value
Publication number	US-9103401-B2
Application number	US-12318408-A
Country	US
Kind code	B2
Filing date	May 19, 2008
Priority date	Jul 8, 2003
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

A damper includes a piston rod, a damping piston, at least one cylinder containing a damping liquid, a fixed partition member for partitioning the interior of the damper into two liquid chambers, a pressure source, and a valve in communication with the pressure source which reacts as a function of the pressure. The valve can also be in communication with additional forces, such as mechanical spring forces, which can be adjustable. The valve can include a pressure intensifier. The valve generates fluid flow resistance during flow of liquid in a first direction through the partition member. The fluid flow resistance in the first direction varies according to the amount of force communicated to the valve by the pressure source and any additional forces. The partition member can include means for providing low-resistance return flow of liquid in a second direction.

First claim

The invention claimed is:

1. A damper operable between a compressed position and an extended position, comprising:
a compression chamber containing damping fluid and having a compression volume variable in response to operation of the damper between the positions;
an internally pressurized chamber having a fluid therein;
a barrier separating the internally pressurized chamber fluid from the damping fluid;
the intensifier valve disposed intermediate of the barrier and the com…

Assignees

• Fox Robert C
• Fox Factory Inc

Inventors

• Fox Robert C

Classifications

• F16F9/44 Primary

  Mechanical Engineering · mapped topic

• F16F9/512 Primary

  Mechanical Engineering · mapped topic

• F16F9/5126 Primary

  Mechanical Engineering · mapped topic