Spring brake actuator with filtered service vent opening

Details Spring brake actuator with filtered service vent opening Spring brake actuator with filtered service vent opening

1997-09-03

1999-12-28

Oberleitner, Robert J.

Expansible chamber devices

Relatively movable working members

First working member moves second coaxial working member...

92130A, F01B 700

Patent

active

060066512

ABSTRACT:
A fluid-operated brake actuator having a housing with one or more vent openings in communication with an interior chamber is provided with a filter assembly mounted to the housing over the vent openings. The filter assembly includes a gas permeable filter element, with oleophobic and homophobic characteristics so that air entering the service brake inner chamber from the atmosphere will be substantially free of contaminants

REFERENCES:
patent: 3730056 (1973-05-01), Swander, Jr.
patent: 3977308 (1976-08-01), Swander, Jr. et al.
patent: 4889037 (1989-12-01), Goral et al.
patent: 5518304 (1996-05-01), Sich et al.
patent: 5623862 (1997-04-01), Hanaway et al.

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