Delphi Technologies, Inc.

Patrick T MacLellan

Bernard Petin

Michael A Kasselman

Michel J Vermoesen

Derek T Dreischarf

Ryan M Elking

Gary Chris Fulks

Philippe Georges Castel

Timothy Allen Haerr

Roger Sherrill Sexton

Mike W Fanelli

Michael J Vermoesen

Timothy G Newman

A vehicle braking system vacuum booster tandem power piston connection design such that the primary piston and the secondary piston are positioned together forming the tandem power piston. A connection design that provides direct alignment between the primary piston and secondary piston upon assembly and also provides an airtight seal between the primary piston and the secondary piston when assembling the tandem power piston.

Dual tandem power piston-attachment concept

The present invention includes a system for providing an improved controlled airflow within a vacuum booster system. The system includes a vacuum booster assembly having a primary chamber and a secondary chamber, and an outer tube having a first end and a second end, the first end in communication with the secondary chamber of the vacuum booster assembly. The system additionally includes an airflow control assembly operably coupled to the second end of the outer tube, and an inner tube, concentric to the outer tube, having a first end and a second end, the first end operably coupled to the airflow control assembly, the second end in communication with the primary chamber of the vacuum booster assembly. In the system, air flows from the primary chamber of the vacuum booster assembly to the airflow control assembly within the inner tube and air flows from the airflow control assembly to the secondary chamber of the vacuum booster assembly within the outer tube.

System and method for improved controlled airflow within a vacuum booster system

An apparatus and method are provided for adjusting the axial distance between the front and rear walls of a vacuum booster, from outside of the booster, after the booster has been assembled. The booster includes a housing having a front housing and a rear housing joined together and defining a longitudinal axis of the booster. The front housing defines a front wall of the housing and an inner surface of the front wall. The rear housing defines a rear wall of the housing and includes a captive nut having threads adapted for threaded engagement with a threaded end of a tie rod. The front and rear walls are spaced an axial distance from one another along the longitudinal axis. A tie rod extends axially through the housing and has a first end engaging the rear wall of the housing and a second end engaging the front wall of the housing. The first end of the tie rod has threads for engaging the threads of the captive nut in the rear wall of the housing. The second end of the tie rod has an axially facing surface thereof for applying an axially directed force against the inner surface front wall of the housing. The axial distance of the housing between the front and rear walls of the housing is adjusted by turning the tie rod, to thread the first end of the tie rod farther in or out of the captive nut. The captive nut may include a tube extending axially therefrom along a part of the tie rod into the interior of the housing, through one or more separate fluid chambers within the booster, to provide a sealed passageway precluding leakage between the fluid chambers along the tie rod.

Tie rod apparatus and method for assembling a vacuum booster

A power booster comprises a rear housing section and a piston. An inner bearing is disposed around the piston, and is adjustable relative to the rear housing section to translate the piston. A method of setting an axial dimension of the power booster is also provided.

Vacuum booster rear bearing

The problem of providing air from a vehicle engine compartment to a breather port of a vacuum booster mounted on a wall separating the engine compartment from the passenger compartment is solved by adapting the wall to provide an air passage, when the rear wall of the booster is bearing against the wall.

Vacuum booster air intake via engine compartment breather passage

A power booster comprises a housing, a tube, and a seal. The housing includes a front housing section, a rear housing section, and a divider. The tube is mechanically fastened proximate the rear housing section and generally stationary relative to the rear housing section, with the seal between the divider and the tube.

Power booster sealing mechanism

An airvalve assembly for a brake booster includes first and second members movable relative to each other to allow the passage of fluid, and a clip. The clip engages one of the first or second members, and has a spring arm which engages the other of the first or second members to normally position the first and second members relative to each other.

Growing community of inventors

Dayton, OH, United States of America

Patrick T MacLellan