Gm Global Technolgoy Operations, Inc.

Delphi France Automotive Systems

William L Van Doren

Craig A Osterday

James D Keaton

David E Staeuble

Omer C Denney

Larry C Studebaker

Philippe Georges Castel

Timothy Allen Haerr

Douglas L Osterfeld

Joseph Genaudeau

A power booster includes a housing with a rear housing section and a front housing section defining an internal cavity. A housing wall separates the internal cavity into a first chamber and a second chamber with an opening formed in the housing wall, wherein it is desirable to extend a component through the opening. A tube has an end secured in the opening in the housing wall. The tube's end includes a radially directed wall extending from the end of the tube that extends to an axially extending wall positioned concentrically with the tube and terminating with an outwardly turned segment. The axially extending wall is positioned within the opening in the housing wall with a seal positioned between the axially extending wall and the housing wall wherein the distance between the front housing section and the rear housing section is minimized, by extending the component through the tube.

Power booster sealing mechanism

A push rod is connected in pivotal retained relation to a polymeric member such as a power booster air valve polymeric insert having a stiffness less than that of an air valve. In a preferred embodiment, the insert is fitted on the spherical ball end of the push rod, and the insert with the push rod is then inserted into a recess in the member. The insert has a plurality of arms extending from the insert base end at a slight angle outwardly relative to the insert axis. The insert also has an attached metallic end on its base end to better distribute the force input from the push rod to the air valve. The arms and the member recess are provided with various cam surfaces which force the arms inwardly in cantilever fashion during the insertion movement, and the arms have surfaces on their outer ends which fit within an annular groove in the cylindrical side wall of the member recess, locking the insert to the rod spherical ball end and also within the member recess.

Self-locking ball-and-socket mechanism

A push rod is connected in pivotal retained relation to a member such as a power booster air valve or a master cylinder piston by an insert. The insert is fitted on the spherical ball end of the push rod and the insert with the push rod is then inserted into a recess in the member. The insert has a plurality of arms extending from the insert base end at a slight angle outwardly relative to the insert axis. The arms and the member recess are provided with various cam surfaces which force the arms inwardly in cantilever fashion during the insertion movement, and the arms have surfaces on their outer ends which fit within an annular groove in the cylindrical side wall of the member recess, locking the insert to the rod spherical ball end and also within the member recess.

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Dayton, OH, United States of America

William L Van Doren