Spring brake actuator with a pressure plate bearing for a caging

Details Spring brake actuator with a pressure plate bearing for a caging Spring brake actuator with a pressure plate bearing for a caging

1993-06-21

1994-09-13

Look, Edward K.

Expansible chamber devices

Plural flexible wall working members

92 63, 92 96, 91376R, F01B 1900

Patent

active

053458583

ABSTRACT:
A spring brake actuator, formed by a housing having an elastomeric diaphragm dividing the interior into two chambers, comprises a pressure plate adjacent the diaphragm in one of the chambers with a large force compression spring between the pressure plate and the housing. A hollow actuator rod is mounted within the chamber for reciprocal movement with the diaphragm and the pressure plate and receives a permanently installed caging tool extending through a housing aperture, a pressure plate aperture and into the hollow actuator rod. The pressure plate includes a bearing in the pressure plate aperture to facilitate reciprocal movement of the pressure plate over the caging tool.

REFERENCES:
patent: 3149542 (1964-09-01), Cruse
patent: 3187640 (1965-06-01), Young et al.
patent: 3811365 (1974-05-01), Gordon et al.
patent: 3884446 (1975-05-01), Erickson
patent: 3908520 (1975-09-01), Ma
patent: 4711156 (1987-12-01), Kayyod et al.
patent: 4850263 (1989-07-01), Rumsey et al.
patent: 4960036 (1990-10-01), Gummer et al.
patent: 5015727 (1992-04-01), Bowyer

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