Abstract: A brake mechanism fixed to a member allowing limited reciprocal motion and providing a restorative force to the movable member in one direction of movement thereof. A brake mechanism includes a rotor fixed to and wheel about an axle axis has a caliper assembly spanning the rotor with inboard and outboard friction members supported on either side of the rotor for selectively engaging the rotor and braking the wheel. A piston is fixed to the caliper of the inboard friction member for moving the inboard friction member toward the rotor and including a piston seal which, upon removal of fluidic pressure from the cylinder, resiliently urges the inboard friction member away from the rotor. A bracket is fixed to the vehicle supports the caliper on a pair of generally cylindrical guide pins fixed to one of the anchor bracket and caliper assembly and is movable within a pair of generally cylindrical guide pin bores of the anchor bracket and caliper assembly.

Abstract: A disc brake has a first caliper with first and second friction members that are moved into engagement with a rotor to effect a brake application. The actuator includes a second caliper retained on a pin and third and fourth friction member aligned with the rotor. First and second linkage members connect the second caliper to the first and second friction members. The second caliper when activated moves the third and fourth friction members into engagement with the rotor to create a tangential force that causes the second caliper to pivot on the pin and provide an input force that moves first and second ramp surfaces on the first and second linkage members to produce an actuation force that moves the first and second friction members into engagement with the rotor to produce a braking force that retards the rotation of the rotor.

Abstract: A drum brake has cylinders symmetrically fixed to a stationary member. Each cylinder has an axial bore therein with a groove for retention of a seal. A piston engages each seal to define chambers that receive pressurized fluid. Webs for friction members have a first end pined to an opposite cylinder and a second end connected to an opposite piston and to each other by a strut. Pressurized fluid acts on the pistons to move the second ends with respect to the first ends and simultaneously bring the friction members into engagement with a drum to effect a brake application. The seals acts on and return the pistons to a rest position in an absence of pressurized fluid. A pawl on a lever is moved into engagement with the strut to bring the first and second friction members into engagement with the drum to manually effect a brake application.

Abstract: A disc brake having a support member that is secured to a vehicle with first and second bores that are perpendicular to a rotor and a caliper with an actuation section having a piston for applying an actuation force to move friction members into engagement with the rotor. A first guide pin, affixed to the caliper having a first bearing surface and a second guide pin, affixed to the caliper having a second bearing surface that respectively engage the first bore and second bore in a plane along the center of gravity of the caliper. The center of gravity of the caliper is sustained by compensating for any change in a relationship of a piston and an actuation chamber by adding additional fluid to the actuation chamber on movement of the piston out of the actuation chamber such that an actuation force is always perpendicularly applied to the rotor.

Abstract: A disc brake having a support member with first and second spaced apart rails that extends toward a rotor to position first and second friction members adjacent corresponding sides of the rotor. The support member has a horizontal projection that extends away from the rotor with a first bore therein to receive a piston connected to the first friction member and a peripheral surface thereon that is received in a second bore in a caliper to define a second piston that is connected to the second friction member. The first piston, horizontal projection and second bore define an actuation chamber that receives pressurized fluid to develop an actuation force to move the first and second friction members into engagement with the rotor and effect a brake application. Retraction seals act on and move the first and second friction members away from the rotor to define a same running clearance.

Abstract: A disc brake has a support with a first end separated from a second end by first and second side walls that retain actuation members to move the first and second friction members into engagement with a rotor and effect a brake application. First and second perpendicular projections that extend from the support are aligned with the first wall and third and fourth perpendicular projections that extend from the support and are aligned with the second wall. The first and second friction members have first and second radial projections located between a first end and a second end. Beams connect the radial projections with the perpendicular projections to align the first and second friction members with the rotor and pivot on the perpendicular projections to carry reaction forces created during a brake application into the first end of the support.

Abstract: A disc brake having an anchor with first and second rails that align first and second friction members with a rotor. The friction members each have a carrier with a first projection on a first end and a second projection on a second end that are respectively located in the first and second rails to position the first friction member on a first side of the rotor and the second friction member on a second side of the rotor. During a brake application, the first projection on the first carrier is pushed into engagement with a first abutment surface on the first rail prior to the second projection thereon engaging a first abutment surface on the second rail.