Spring brake actuator having plastic pressure plate assembly

Details Spring brake actuator having plastic pressure plate assembly Spring brake actuator having plastic pressure plate assembly

1996-10-09

1998-06-30

Denion, Thomas E.

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92 99, 92128, 92130A, 2988806, F01B 1900

Patent

active

057717745

ABSTRACT:
An air-operated diaphragm spring brake actuator has a pressure plate formed entirely of plastic. The diaphragm is secured to the pressure plate by ultrasonic welding. The pressure plate also has a central hub which centers the opening and receives the actuator rod in press-fit engagement.

REFERENCES:
patent: 3408899 (1968-11-01), Golden
patent: 3762280 (1973-10-01), Krueter et al.
patent: 4043251 (1977-08-01), Ohmi
patent: 4056043 (1977-11-01), Sriramamurty et al.
patent: 4069904 (1978-01-01), Garrett et al.
patent: 4152559 (1979-05-01), Davis
patent: 4803912 (1989-02-01), Nishii
patent: 5002164 (1991-03-01), Bowyer
patent: 5067392 (1991-11-01), Gautier
patent: 5076142 (1991-12-01), Steer et al.
International Search Report, PCT/US95/14780, Filed Nov. 14, 1995.

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