Sliding caliper disc brake and guide and retention means therefor having resilient bushings

Claim 2

Guide and retention means for a disc brake assembly having a fixed support frame and a sliding caliper frame and brake pad assemblies and a rotor to be braked, said guide and retention means comprising: a sleeve member adapted to provide a retention key for retaining the brake pad assemblies in the caliper frame while permitting sliding movement of the brake pad assemblies in directions substantially parallel to the sleeve member axis, a pin member removably positioned axially in said sleeve member and cooperating therewith to provide a retention key for limiting movement of the caliper frame relative to the support frame to sliding movement in directions substantially parallel to the sleeve member axis, and at least one of said members having resilient transverse shock load absorbing means for absorbing shock loads exerted between the frames transversely of the sleeve member axis, said resilient shock load absorbing means including rubberlike bushing means in said sleeve member and receiving said pin member therethrough and mounting said pin member in radially spaced relation to said sleeve member, said sleeve member having transverse chordal slot means provided therein, said slot means being of a greater axial width than the width of the portion of the fixed support frame adapted to engage said guide and retention means, for receiving the portion of the fixed support frame therein; said pin member extending through a part of said transverse chordal slot means for abutting engagement with said support frame transversely of said pin member; and said bushing means comprising a pair of rubberlike bushings each positioned intermediate an end of said sleeve member and said chordal slot means.

Claim 3

Guide and retention means for a disc brake assembly having a fixed support frame and a sliding caliper frame and brake pad assemblies and a rotor to be braked, said guide and retention means comprising: a sleeve member adapted to provide a retention key for retaining the brake pad assemblies in the caliper frame while permitting sliding movement of the brake pad assemblies in directions substantially parallel to the sleeve member axis, a pin member removably positioned axially in said sleeve member and cooperating therewith to provide a retention key for limiting movement of the caliper frame relative to the support frame to sliding movement in directions substantially parallel to the sleeve member axis, and at least one of said members having resilient transverse shock load absorbing means for absorbing shock loads exerted between the frames transversely of the sleeve member axis, said resilient shock load absorbing means including rubberlike bushing means in said sleeve member and receiving said pin member therethrough and mounting said pin member in radially spaced relation to said sleeve member, said sleeve member being made of a resilient plastic material, and said bushing means including spaced annular bushings mounted internally of said sleeve member and receiving said pin member therethrough with a tight fit relative to said pin member and said sleeve member, said bushings normally holding said pin member and said sleeve member in radially spaced relation, said pin member having on one end a head of greater diameter than the inner diameter of the one of said bushings nearest said head, and a removable keeper received on the other end of said pin member and having a diameter greater than the inner diameter of the one of said bushings nearest said keeper and less than the outer diameter of said sleeve member, said pin member being axially removable from said bushings and said sleeve member upon removal of said keeper from said pin member.

Claim 4

Guide and retention means for a disc brake assembly having a fixed support frame and a sliding caliper frame and brake pad assemblies and a rotor to be braked, said guide and retention means comprising: a sleeve member adapted to provide a retention key for retaining the brake pad assemblies in the caliper frame while permitting sliding movement of the brake pad assemblies in directions substantially parallel to the sleeve member axis, a pin member removably positioned axially in said sleeve member and cooperating therewith to provide a retention key for limiting movement of the caliper frame relative to the support frame to sliding movement in directions substantially parallel to the sleeve member axis, and at least one of said members having resilient transverse shock load absorbing means for absorbing shock loads exerted between the frames transversely of the sleeve member axis, said resilient shock load absorbing means including rubberlike bushing means in said sleeve member and receiving said pin member therethrough and mounting said pin member in radially spaced relation to said sleeve member, said sleeve member being made of a resilient plastic material, and said bushing means including spaced annular bushings mounted internally of said sleeve member and receiving said pin member therethrough with a tight fit relative to said pin member and said sleeve member, said bushings normally holding said pin member and said sleeve member in radially spaced relation, said pin member having on one end a head of greater diameter than the inner diameter of the one of said bushings nearest said head, and a removable keeper received on the other end of said pin member and having a diameter greater than the inner diameter of the one of said bushings nearest said keeper and less than the outer diameter of said sleeve member, said pin member being axially removable from said bushings and said sleeve member upon removal of said keeper from said pin member.

Claim 5

A disc brake assembly comprising: a brake rotor, a stationary carrier member having said rotor rotatably mounted relative thereto, a clamping member straddling a portion of the periphery of said rotor and slidably mounted on said carrier member, a pair of brake pad members on opposite sides of said rotor and in said clamping member, means for directly applying one of said pad members to one face of said rotor and by reaction effecting axial movement of said clamping member in the opposite direction to apply the other pad member to the other face of said rotor, first abutment means on said carrier member and second abutment means on said clamping member in abutting alignment with said first abutment means for limiting circumferential movement of said clamping member with respect to said carrier member, said first abutment means and said second abutment means having axially extending registeriNg groove means therein, said groove means having base and sidewall means, and guiding and retention means for said clamping member and said brake pad members so that said brake pad members are carried thereby, said guiding and retention means being slidably mounted in said grooves so that axial relative movement is permitted between said guiding and retention means and each of said members, said guiding and retention means including axially apertured generally cylindrical means and pin means extending axially therethrough, and having resilient bushing means in said generally cylindrical means and receiving said pin means therethrough.

Claim 6

A disc brake assembly comprising: a brake rotor, a stationary carrier member having said rotor rotatably mounted relative thereto, a clamping member straddling a portion of the periphery of said rotor and slidably mounted on said carrier member, a pair of brake pad members on opposite sides of said rotor and in said clamping member, means for directly applying one of said pad members to one face of said rotor and by reaction effecting axial movement of said clamping member in the opposite direction to apply the other pad member to the other face of said rotor, first abutment means on said carrier member and second abutment means on said clamping member in abutting alignment with said first abutment means for limiting circumferential movement of said clamping member with respect to said carrier member, said first abutment means and said second abutment means having axially extending registeriNg groove means therein, said groove means having base and sidewall means, and guiding and retention means for said clamping member and said brake pad members so that said brake pad members are carried thereby, said guiding and retention means being slidably mounted in said grooves so that axial relative movement is permitted between said guiding and retention means and each of said members, said guiding and retention means including axially apertured generally cylindrical means and pin means extending axially therethrough, and having resilient bushing means in said generally cylindrical means and receiving said pin means therethrough.

Claim 7

The disc brake assembly of claim 3, said resilient bushing means being transversely preloaded in the direction of said pad member direct applying means when said pin means is inserted therethrough; said pin means being engaged by the base means of said carrier member groove means and limited thereby in the circumferential direction to a position preloading said resilient bushing means.