Spring brake actuator with release tool requiring limited axial

Details Spring brake actuator with release tool requiring limited axial Spring brake actuator with release tool requiring limited axial

1995-08-15

1997-06-10

Denion, Thomas E.

Expansible chamber devices

Relatively movable working members

First working member moves second coaxial working member...

92 17, F01B 700

Patent

active

056365624

ABSTRACT:
A brake release tool incorporates a two-part structure wherein a portion accessible from outside the brake actuator does not move axially away from the brake actuator during caging. In this way, less room is necessary outwardly of the brake actuator housing than has been required in the prior art. An operator turns an outer bolt, which turns a threaded inner nut. The threaded inner nut moves axially to contact a piston, and moves the piston to cage the power spring. The bolt need not move axially outwardly, although in one embodiment it may move slightly axially inwardly as the spring is caged to provide a visual indication that the spring is not uncaged.

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