Automotive Products (usa), Inc.

Rajiv Iyer

Richard A Nix

David C Peterson

Benjamin Chetwood Struve

Michael James Woodard

A clutch hydraulic actuator system having a vibration damper provided in the system between a master cylinder and a slave cylinder of the system. The damper includes an elastomeric diaphragm and a spring steel diaphragm. One face of the elastomeric diaphragm is in fluid communication with hydraulic fluid in the system so that the elastomeric diaphragm may deflect in response to low frequency vibrations transmitted through hydraulic fluid in the system to effect damping of the low frequency vibrations. The spring steel diaphragm is positioned in the system generally parallel to and proximate the other face of the elastomeric diaphragm so as to form a backup for the elastomeric diaphragm so that the elastomeric diaphragm may deform against the spring steel diaphragm in response to high frequency vibrations transmitted through the hydraulic fluid to cause deflection of the spring steel diaphragm to effect damping of the high frequency vibrations.

Dual action damper for hydraulic clutch actuator

A seal assembly especially suitable for use as the sealing element in the annular cylindrical bore of a concentric cylinder assembly. The seal assembly includes an annular insert structure of rigid material and an annular seal member of elastomeric material bonded to the insert structure. The annular insert structure has an I-beam cross-sectional configuration including an outer annular flange structure centered on an axis, an inner annular flange structure centered on the axis concentrically within the outer annular flange structure, and annular web structure extending radially between the inner and outer annular flange structures. The web structure coacts with the flange structures to define left and right continuous annular grooves in the left and right faces of the insert structure and defines a plurality of circumferentially spaced holes extending axially through the web structure between the left and right grooves. The annular elastomeric seal member fills the left and right grooves, fills the web structure holes, and extends to one side of the insert structure to form inner and outer annular sealing surfaces for coaction with the respective annular surfaces of the annular cylindrical bore.

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Auburn Hills, MI, United States of America

Rajiv Iyer