Dampers with thermal expansion compensation

Patent metadata

Field	Value
Publication number	US-8950558-B2
Application number	US-201213709981-A
Country	US
Kind code	B2
Filing date	Dec 10, 2012
Priority date	Dec 29, 2011
Publication date	Feb 10, 2015
Grant date	Feb 10, 2015

Abstract

A damper includes a housing bounding a primary chamber and a compensation chamber, the primary chamber including a first gas compartment and a control compartment that are separated by an expansion piston, the compensation chamber including a second gas compartment and an overflow compartment that are separated by a compensation piston. A piston rod has a first end slidably disposed within the control compartment. A first fluid path is in fluid communication with the overflow compartment so that when the expansion piston is in the first position, the expansion piston blocks fluid communication between the control compartment and the overflow compartment by way of the first fluid path and when the expansion piston is in the second position, the hydraulic fluid can freely flow from the control compartment to the overflow compartment by way of the first fluid path.

First claim

What is claimed is:

1. A damper comprising:
a housing bounding a primary chamber and a compensation chamber, the primary chamber comprising a first gas compartment and a control compartment each having a volume, the compensation chamber comprising a second gas compartment and an overflow compartment;
an expansion piston movably disposed within the primary chamber so as to separate the first gas compartment from the control compartment, the volume of the first gas compartment and…

Assignees

• Fox Factory Inc

Inventors

• Turner Roy A
• Madau Barna B

Classifications

• F16F9/067

  Mechanical Engineering · mapped topic

• F16F9/526 Primary

  Mechanical Engineering · mapped topic