Abstract: A surgical instrument including a shaping instrument for shaping a bone as well as an impaction/extraction device for use with the shaping instrument is disclosed.

Abstract: A disc brake system includes a disc, and a caliper housing defining a bore that faces one side of the disc. A piston is disposed in the bore for translational movement toward the disc, and a brake pad is arranged between the piston and the disc. A shim plate is arranged between the brake pad and the piston. A convolute boot is provided that has a first end portion and a second end portion. The first end portion is sealingly connected to the caliper housing. The second end portion (i) being sealingly connected to the shim plate and (ii) including an interface area sealing portion that extends between the shim plate and the piston. The interface area sealing portion is sealingly connected to the piston to define an interface area. An anti-vibration material is located in the interface area.

Abstract: A disc brake (110) for use in a brake system of a vehicle. The disc brake (110) has a caliper (16) which retains first (130) and second (132) brake pad assemblies in alignment with corresponding first (134a) and second (134b) braking surfaces on a rotor (134). In response to hydraulic fluid being supplied to an actuation chamber (18) in the caliper (16), the first (130) and second (132) brake pad assemblies are moved into engagement with the first (134a) and second (134b) braking surfaces to retard the rotation of the rotor (134) and effect a brake application for the vehicle. The disc brake (110) is characterized by the first (134a) and second (134b) braking surfaces on the rotor (134) having a radial concave shape while the first and second friction member of the first (130) and second brake pad assemblies respectively have corresponding surfaces (131,133) with a radial convex shape.

Abstract: A spring clip located in a rail of an anchor of a disc brake to hold a carrier for a friction pad and provide a surface on which a projection on the carrier slides during movement of a the carrier toward a rotor by an input force to effect a brake application. The spring clip is characterized by a base having a surface thereon that substantially matches and covers the rail. A tab that extends from the base engages the anchor to fix the position of the base in the rail with respect to the rotor. An arm that extends inward from the base in plane perpendicular to the base has a lip on the end thereof that extends in a plane parallel with the rail. The projection on the carrier engages the arm whenever wear reduces a thickness of the friction pad to a predetermined thickness such that the projection thereafter engages the arm to bring the lip into engagement with the rotor whenever the first friction pad engages the rotor during a brake application.

Abstract: A guide pin (24) attached to a caliper (21) and located in a bore (28) of an anchor bracket or carrier member (22) in a disc brake (10). The carrier member (22) and caliper (21) move with respect to each other in response to a force developed by a piston for urging friction pads (18,20) into engagement with a rotor (12) to effect a brake application. The guide pin (24) is characterized by a head (36) having a shaft (38) extending therefrom into a bearing (62,64) which is located between the shaft (38) and housing surrounding the bore (28). The bearing (62,64) has dissimilar resistances to stiffness in a radial plane than in a tangential plane such that vibratory forces are attenuated and dynamic forces generated during a brake application are absorbed to maintain alignment between the friction pads (18,20) and rotor (12).