Patent ES-8601421-A1 (ES)
Title: An improved disc brake.
IPC: F16D65/14
Filed: 1984-08-30
Abstract: Disc brake housing provided with a cylindrical recess at the end thereof adjacent the disc for receipt of a sealing ring made of resilient compressible material. The sealing ring has an outer peripheral edge to make contact with the cylindrical wall of the cylindrical cavity and an interior edge including several teeth which are compressed to make sealing contact with several axially extending splines of the braking piston. - Pref. the sealing ring is made of nitrile rubber. (0/25) EPAB- EP-139117 B Disc brake of the type which includes a disc mounted for rotation about an axle, a brake housing mounted on said axle in alignment with a friction surface of said disc, an axially movable braking piston having an interior end at least partially mounted within said housing and an external end outwardly of said housing adjacent said friction surface of said disc, said braking piston having a plurality of axially extending splines about an exterior surface of said interior end to mate with corresponding splines on an interior surface of said housing to limit rotation of said braking piston relative to said housing, brake actuation means mounted on said housing, a powershaft mounted within said housing in coaxial alignment with said braking piston and capable of selective rotation by said brake actuation means, said powershaft having worm gear teeth thereon engaged with mating teeth on each interior end of said braking piston to produce axial movement of said braking piston toward and away from said friction surface of said disc directly corresponding to said selective rotation of said powershaft, characterised by means for supplying and periodically resupplying lubricant to an interior of said housing sealing means between said housing and said interior end of said braking piston to prevent loss of said lubricant from said interior of said housing said housing having a cylindrical recess in an end thereof adjacent said disc, said cylindrical recess having an interior cylindrical wall and a base including a radially extending annular surface said sealing means including a sealing ring made of resiliently compressable material and installed within said cylindrical cavity said sealing ring having an outer peripheral edge making contact with said cylindrical wall of said cylindrical cavity and an interior edge including a plurality of teeth which are compressed to be received in and make sealing contact with said plurality of axially extending splines - EP-139117 B Disc brake of the type which includes a disc mounted for rotation about an axle, a brake housing mounted on said axle in alignment with a friction surface of said disc, an axially movable braking piston having an interior end at least partially mounted within said housing and an external end outwardly of said housing adjacent said friction surface of said disc, said braking piston having a plurality of axially extending splines about an exterior surface of said interior end to mate with corresponding splines on an interior surface of said housing to limit rotation of said braking piston relative to said housing, brake actuation means mounted on said housing, a powershaft mounted within said housing in coaxial alignment with said braking piston and capable of selective rotation by said brake actuation means, said powershaft having worm gear teeth thereon engaged with mating teeth on each interior end of said braking piston to produce axial movement of said braking piston toward and away from said friction surface of said disc directly corresponding to said selective rotation of said powershaft, characterised by means for supplying and periodically resupplying lubricant to an interior of said housing sealing means between said housing and said interior end of said braking piston to prevent loss of said lubricant from said interior of said housing said housing having a cylindrical recess in an end thereof adjacent said disc, said cylindrical recess having an interior cylindrical wall and a base including a radially extending annular surface said sealing means including a sealing ring made of resiliently compressable material and installed within said cylindrical cavity said sealing ring having an outer peripheral edge making contact with said cylindrical wall of said cylindrical cavity and an interior edge including a plurality of teeth which are compressed to be received in and make sealing contact with said plurality of axially extending splines