B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
188/212, 303/76
B60T 17/08 (2006.01)
Patent
CA 1306425
TAMPER-RESISTANT BRAKE ACTUATOR ABSTRACT OF THE DISCLOSURE The present invention provides a tamper-resistant fluid-operated brake actuator having a power spring housed within a head or cap which is attached to a flange case having one or more diaphragms or pistons responsive to changes of fluid pressure within the brake actuator chambers. In one embodiment, the head is attached to the flange case by a substantially continuous curvilinear annular metal retaining member which must be inelastically deformed or destroyed in order to remove the head from the flange case, thus rendering tampering more difficult. In another embodiment, the annular metal retaining member of the present invention is integral with the actuator head and which is metal-spun or the like onto the flange case.
580436
Brooks David W.
Choinski Graydon J.
Gummer Allen L.
Gowling Lafleur Henderson Llp
Indian Head Industries Inc.
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