Tamper-resistant brake actuator

Details Tamper-resistant brake actuator Tamper-resistant brake actuator

1992-06-26

1994-10-11

Oberleitner, Robert J.

Expansible chamber devices

Relatively movable working members

First working member moves second coaxial working member...

92 48, 92 98R, 188170, F16D 6524

Patent

active

053536886

ABSTRACT:
An air-operated combination diaphragm spring brake has a tamper-resistant seal provided between a head (46) and a spring side of a flange case (18) which together form a spring chamber (16) housing a power spring (72). The head (46) has an annular rim (70), and the flange case has an annular flange (74) with a diaphragm (48) sandwiched therebetween. An annular lip (76) on annular rim (70) extends over the annular flange (74). A snap ring (82) is engaged by opposing annular grooves (80), (78) on the outside of the annular flange (74) and inside of the annular lip (76), respectively, to form the tamper-resistant seal.

REFERENCES:
patent: 3107583 (1963-10-01), Woodward
patent: 3334545 (1967-08-01), Houser
patent: 3424062 (1969-01-01), Gummer et al.
patent: 4706367 (1987-11-01), Garringer
patent: 4960036 (1990-10-01), Gummer et al.

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