B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/66
B60T 17/00 (2006.01) B60T 17/08 (2006.01) B61H 1/00 (2006.01) F16D 65/14 (2006.01) F16D 65/22 (2006.01)
Patent
CA 2014117
-8- ABSTRACT A vehicle brake actuator comprises a piston and cylinder arrangement (2/3) and a push rod (11) that is moved via a cam arrangement (6',6") by operation of the piston and cylinder arrangement to apply braking force at a brake shoe (12), the direction in which the piston (3) moves to move the push rod (11) being substantially at right angles to the direction in which the push rod (11) is moved. The cam arrangement (6',6") is pivotally mounted at (7) in a housing (1) of the actuator. The piston (3) is pivotally connected (at 5A) to the cam arrangement (6',6") and is tiltable in the cylinder (2). The push rod (11) is constrained by a support arrangement (10A) therefor to straight line movement in the housing (1), effected by movement of cam faces (8) of the cam arrangement (6',6") past force-receiving surfaces (9A) connected to the push rod (11). The cam arrangement (6',6") is pivoted about its mounting (at 7) in the housing (1) to effect the movement of the cam faces (8) by movement of the piston (3) in the cylinder (2) with the piston (3) tilting as it moves. (Figure 1)
Gowling Lafleur Henderson Llp
Griffin Donald W.
Westinghouse Brake And Signal Holdings Limited
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