Disc brake corrosion barrier

Details Disc brake corrosion barrier Disc brake corrosion barrier

F - Mech Eng,Light,Heat,Weapons

16

D

188/152

F16D 55/22 (2006.01) F16D 65/20 (2006.01)

Patent

CA 1229805

DISC BRAKE CORROSION BARRIER ABSTRACT Disc brake assemblies (10) include a phenolic piston (16) disposed within a bore (14) of a housing (11), the piston (16) movable relative to said housing (11) in order to engage brake shoe pads (18, 20) with the disc (22) of the brake assembly. An interior seal ring (42) and an exterior boot seal (60) are disposed between the bore (14 and piston (16) in order to prevent contaminants from entering into the bore and damaging the phenolic piston. Located between an annular groove (40) receiving the interior seal ring (42) and an exterior opening (50) receiving one end of the exterior boot seal (60), is a land (70). The land (70) is protected by a corrosion resistant barrier (80) which protects the land from oxidation and subsequent lock-up of the phenolic piston (16), and pro- vides a low friction surface for engagement with the slid- able piston.

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