Patent ID: 6430928
Filing Date: 2002-08-13
Classification: F16D,F16L

Abstract:
A damper for provision in a hydraulic actuator system between a master cylinder and a slave cylinder of the system, said damper including:a housing including port means for connection in the system and defining a chamber in communication with the port means; an elastomeric diaphragm carried by said housing and having a thin planar configuration including upper and lower parallel planar faces, the elastomeric diaphragm extending across said chamber with the upper face thereof communicating with the port means so as to form a boundary wall of said system so that said elastomeric diaphragm deflects in response to low frequency vibrations transmitted through the hydraulic fluid in the system to effect damping of the low frequency vibrations; and a further planar diaphragm carried by said housing and defining a planar upper face positioned parallel to and proximate the lower face of the elastomeric diaphragm so as to form a backup for said elastomeric diaphragm so that said elastomeric diaphragm deforms against the further diaphragm in response to high frequency vibrations transmitted through the hydraulic fluid to seat the lower planar face of the elastomeric diaphragm against the upper planar face of the further diaphragm and cause deflection of the further diaphragm to effect damping of the high frequency vibrations.