Breather filter for sealed spring brake actuators

Details Breather filter for sealed spring brake actuators Breather filter for sealed spring brake actuators

2005-04-05

2005-04-05

Lopez, F. Daniel (Department: 3745)

Expansible chamber devices

With releasable stop or latch means to prevent movement of...

Engages member coaxial with and rotatable relative to...

C092S078000

Reexamination Certificate

active

06874405

ABSTRACT:
A brake actuator assembly includes a housing defining a spring chamber. A spring is disposed in the spring chamber, the spring being biased toward an extended position and movable against the bias toward a caged position. A release assembly is provided for selectively moving and retaining the spring against the bias toward the caged position, the release assembly comprising a hollow release bolt having a fluid passage passing therethrough by which fluid passage the spring chamber is in fluid communication with an environment surrounding the housing. A filter is disposed within the fluid passage in the hollow release bolt for filtering fluid passing through the fluid passage.

REFERENCES:
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patent: 3217611 (1965-11-01), Leighton
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patent: 4890540 (1990-01-01), Mullins
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patent: 5263403 (1993-11-01), Choinski
patent: 5311809 (1994-05-01), Choinski et al.
patent: 5372059 (1994-12-01), Pierce et al.
patent: 5632192 (1997-05-01), Plantan et al.
patent: 5937733 (1999-08-01), Stojic

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