A hydraulic caliper assembly includes a caliper brake housing including two opposing pairs of two piston assemblies, each of the pairs of two piston assemblies adapted to place a respective stator assembly of a pair of stator assemblies in a braking position, where the caliper brake housing is a unitary, cast component having an internal fluid porting system fluidly coupling each of the piston assemblies with a source of hydraulic fluid, and where each of the piston assemblies have a common configuration.

A coated backing plate for a brake pad and method of manufacturing a brake pad having a coated backing plate, where the coating for the backing plate includes a bond layer. The bond layer includes an inboard surface, an outboard surface, a closed pore network toward the outboard surface that faces the inboard surface of the reinforcement plate, and an open pore network at the inboard surface of the bond layer. The open pore network includes a recessed topology having a plurality of craters configured to interlock a friction material of a friction pad or one or more intermediate layers, such as a transition layer and/or a thermal barrier layer.

A head shaft assembly has a center tube, an end tube, a collector sprocket and a collar. The center tube has drive and driven ends. The center tube has a center tube diameter. The end tube has a key extending longitudinally along an outer surface and inner and outer ends. The key defines a key length and the end tube has an end tube diameter. The collector sprocket is mountable to the end tube and rotationally secured to the end tube by the key. The collar is hollow between a first end and a second end. The center tube diameter is substantially the same as the end tube diameter and the drive end is proximate to the inner end. The drive end and the inner end are positioned within the collar between the first end and the second end. The collar fixes the center tube to the end tube.

A brake pad assembly for a bicycle includes a first brake pad, a second brake pad, and a spreader spring. The first brake pad has a first backing plate with a first rotor facing surface, and a first friction pad secured to the rotor facing surface. The second brake pad has a second backing plate with a second rotor facing surface, and a second friction pad secured to the second rotor facing surface and facing the first friction pad. The spreader spring has a first leaf that is fixed to the first brake pad and a second leaf that is fixed to the second brake pad. At least a portion of the first leaf is positioned between the first rotor facing surface and the first friction pad, and at least a portion of the second leaf is positioned between the second rotor facing surface and the second friction pad.

A method of manufacturing a camshaft for a drum brake includes designing a tubular camshaft and thereafter forming the camshaft as a unitary body through, for example, an additive manufacturing process. The camshaft is designed with a first end portion configured for coupling to a brake actuator, a second end portion defining a cam configured to engage cam followers coupled to first and second brake shoes, rotation of the cam causing the first and second brake shoes to move between positions of engagement and disengagement with an associated braking surface, and an intermediate portion disposed between the first and second end portions. A wall thickness of at least one of the end portions and the intermediate portion is configured to achieve at least one of a predetermined torsional stiffness in the camshaft and vibration damping in the camshaft at a selected frequency.

A system or a kit of multiple composite driveshaft assemblies for vehicles is provided, with the with the different composite driveshaft assemblies having different performance characteristics. The different performance characteristics of the composite driveshaft assemblies may be achieved by varying, for example, filament material(s), filament winding depth(s), and filament wind angle(s).

A method for producing an automotive friction material with optimized multi-dimensional construction includes receiving a base friction-disc material, cutting the base friction-disc material to a predetermined size and shape, assembling the sized and shaped cut base friction-disc material, bonding the base friction-disc material to a base friction plate, and utilizing a multi nozzle printing array to deposit friction enhancing materials overtop a reaction surface of the base friction-disc material.

Disclosed is a brake system for a railway vehicle, including linings each having at least one positioning member for mechanically fastening the linings in a predetermined position on the system with respect to a disc of the vehicle and a bearing face for tightly gripping the disc under the action of an actuator of the system, and at least one return member for separating the linings from the disc in order to release it when the linings are freed from the action of the actuator; each lining has at least one fastening member formed on an edge, the return member has two opposite end lugs connected to one another by an elastic portion and each mechanically fastened with a the fastening member, and the system is configured such that the fastening members and the end lugs are situated at a distance from the at least one positioning member.

A head shaft assembly has a center tube, an end tube, a collector sprocket and a collar. The center tube has drive and driven ends. The center tube has a center tube diameter. The end tube has a key extending longitudinally along an outer surface and inner and outer ends. The key defines a key length and the end tube has an end tube diameter. The collector sprocket is mountable to the end tube and rotationally secured to the end tube by the key. The collar is hollow between a first end and a second end. The center tube diameter is substantially the same as the end tube diameter and the drive end is proximate to the inner end. The drive end and the inner end are positioned within the collar between the first end and the second end. The collar fixes the center tube to the end tube.

A yaw brake apparatus includes a first surface disposed on an end of a yaw piston for a wind turbine, the first surface including a first pattern formed by one or more of a plurality of first recesses and a plurality of first protrusions. The yaw brake apparatus may also include a yaw pad including a second surface structurally configured to engage with the first surface and a third surface opposite the second surface that is structurally configured to engage with a slew ring of the wind turbine, the second surface including a second pattern formed by one or more of a plurality of second recesses and a plurality of second protrusions corresponding to one or more of the plurality of first recesses and the plurality of first protrusions on the first pattern such that the first pattern and second pattern fit together when aligned in a predetermined orientation.