A caliper guide assembly having a guide pin, a guide bore, a cap, and a sensor arrangement. The guide bore is arranged to receive the guide pin. The cap may be secured to an open end of the guide bore proximate a free end of the guide pin. The sensor arrangement may include a first sensor component that is configured to provide an output indicative of relative axial displacement between a first sensor component and a second sensor component.

A brake disk defines an annular shape having a radially inner side and a radially outer side. The brake disk includes: a radially outer braking surface, the braking surface having a maximum operating temperature; a fusible material section radially inward from and connected to the braking surface. The fusible material has a maximum operating temperature, the fusible material section suitable for transmitting torque between the braking surface and a shaft. The maximum operating temperature of the braking surface is higher than the maximum operating temperature of the fusible material section. When the temperature of the fusible material section raises above the maximum operating temperature of the fusible material section, the fusible material section is configured to no longer transmit torque between the braking surface and the shaft.

According to an aspect, there is provided an elevator car parking brake comprising a brake carrier having a first plate and a second plate, the plates being spaced from each other and positioned to enable a guide rail to travel within the space between the plates, a caliper movably connected to the brake carrier, brake pads, and an actuator configured to move the brake pads against a guide rail in a braking operation. The elevator car parking brake further comprises at least one first compression spring arranged between the first plate of the brake carrier and a brake pad directly associated with the actuator; and at least one second compression spring arranged between the second plate of the brake carrier and the caliper, the first and second compression springs being configured to keep the brake pads substantially centered with respect to the brake carrier.

The aim of the invention is to ensure a reliable lift of both brake pads of a floating-caliper brake (1) after releasing the brake. This is achieved in that a lifting part (20) is hinged to the brake caliper (2) at a hinge point (21), and the lifting part (20) is supported on the support structure (7) at a contact point (23) at least partly at releasing the floating-caliper brake (1), wherein a lift drive (22) is provided which rotates the lifting part (20) about the hinge point (21) such that a support for the lifting part (20) is produced on the contact point (23), whereby the hinge point (21) and the brake caliper (2) are moved.

A friction drive arrangement includes a plurality of interleaved rotor and stator discs. An end stator disc is adjacent a reaction plate containing a plurality of cylindrical, stepped bores defining spring receptacles opening toward the end stator disc and pin guide holes opening in an opposite direction. Each receptacle contains a coil compression spring located between a bottom of the receptacle and a spring retention pin having a first end section reciprocably received in the guide hole and having a second end section defined by a large diameter foot located between an end of the spring and the end stator disc, with the foot being configured for directly engaging the end stator disc. A tool is used to retract the pins and associated springs into the associated receptacles so as to retain the springs during assembly. Excess retraction of the pins is prevented for preventing over-compression of the springs.

Sealing means are disclosed for preventing the ingress of water and dirt between a brake caliper and the carrier guide pin. At the end of the guide pin facing away from the brake carrier, a retaining clip holds a sealing bead of a sealing boot at least partially within an axial bore of the guide pin. At the end of the guide pin which faces towards the carrier, a sealing boot is provided seated on a ring which in turn is attached to the caliper. The other end of the sealing boot is attached to the guide pin, in a space between the guide pin and the ring. The sealing means at either end are compact, and provide effective sealing where there is not enough space to provide known sealing means.

A brake assembly having a brake carrier, a caliper, first and second brake pads, a pad retraction spring, and a first stop surface. The pad retraction spring urges the first and second brake pads in a direction away from a rotor plane. A first supporting portion of the pad retraction spring is configured to abut the first stop surface to inhibit the pad retraction spring from entering a partially enclosed volume.

A brake assembly has a brake disc in rotational engagement with a wheel of a vehicle, a brake pad which frictionally engages the brake disc when an actuator force is applied thereto, an actuator having an output shaft driven in a forward direction and a reverse direction in order to bring the brake pad and brake disc into the frictional engagement, and an energy absorption and/or storage unit. The energy absorption and/or storage unit absorbs forces acting on the output shaft in the reverse direction in case of a predetermined operation situation.

A brake pad retractor system, comprising, a torsional mount and an adjustable torsion arm having an angular relation with the torsional mount, wherein the torsion arm is sprung responsively to at least some movement of a brake pad and the torsional mount being operative such that upon movement of a brake pad by a first distance, the torsion arm is sprung and communicates an action upon the brake pad through a contact between the torsion arm and the brake pad, the communicated action sufficient to positively retract the brake pad upon release of the brake system, the torsional mount further operative such that upon further movement of a brake pad beyond the first distance the angular relation between the torsion arm and the torsional mount is adjusted responsively to the further movement. Further aspects include a novel a brake caliper and method.

A brake and method of assembly are provided. The brake includes a friction plate configured for coupling to a rotatable body for rotation with the rotatable body about an axis of rotation, a pressure plate disposed about the axis on a first side of the friction plate and fixed against rotation, and an armature plate disposed about the axis on a second side of the friction plate. An electromagnet is disposed about the axis on an opposite side of the armature plate relative to the friction plate. A spring biases the armature plate in a first axial direction towards the friction plate and away from the electromagnet to engage the brake. A fastener couples the pressure plate to the electromagnet. The fastener conforms to a space between opposed surfaces of the pressure plate and the electromagnet and, upon hardening, bonds the pressure plate to the electromagnet.