B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
B60T 17/00 (2006.01) B60T 13/36 (2006.01) B60T 13/38 (2006.01) B60T 17/08 (2006.01)
Patent
CA 2315972
A brake actuator having an improved push rod and end plate assembly which eliminates the requirement for thread adhesive and avoids deformation of the exterior surface of the push rod. The push rod includes an axial internally threaded bore through one end and the shank portion of the mounting screw includes an unthreaded intermediate portion adjacent the threaded end portion having a plurality of radial lobes which are turned into the internally threaded bore of the push rod securely retaining the end plate to the push rod under vibration loading and extreme temperature conditions. The radial lobes on the intermediate portion of the mounting screw each include an arcuate spiral lead surface and a flat generally radial following surface which requires only a relatively small torque to secure the end plate to the push rod, but a significantly larger torque to unthread the mounting screw from the push rod.
Plantan Ronald S.
Schultz Thomas O.
Gowling Lafleur Henderson Llp
Indian Head Industries Inc.
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