Abstract: A device includes a front cover, a torque converter main body, a lock-up device, and a dynamic damper. The dynamic damper is fixed to an output plate of the lock-up device. The dynamic damper has a base plate, an inertial body that includes inertia rings and lid members, and an elastic unit. The base plate is fixed to the output plate. The inertial body can rotate relative to the base plate. The elastic unit can generate a variable hysteresis torque according to a relative rotation angle difference between the base plate and the inertial body, and couples the base plate and the inertial body elastically in a rotation direction.

Abstract: The invention relates to a brake and to a method for controlling the brake. The brake comprises a base part, a braking piece movably supported on the base part, which braking piece is configured to be moved between a braking position and a releasing position, a spring, with the spring force of which the braking piece can be dropped into a braking position, a support member for limiting the initial position of the drop-out movement of the braking piece and also a controllable actuator, which is mechanically connected to the aforementioned support member and configured to displace the initial position of the drop-out movement of the braking piece with respect to the braking position.

Abstract: The invention relates to an elevator brake, said elevator comprising a hoisting machine (1) provided with at least a frame part (2) and a traction sheave (3), and a brake drum (4) arranged to be rotatable with the traction sheave (3) and provided with a braking surface (5), and a brake (6) having an effect on the rotary motion of the traction sheave (3), said brake (6) comprising at least one brake block (8) provided with a braking surface, which brake block (8) has been arranged to act on the braking surface (5) of the brake drum (4) with a force directed substantially towards the braking surface (5). To allow adjustment of the size of the air gap (8a) between the braking surface of the brake block (8) and the braking surface (5) of the brake drum (4), the brake (6) is provided with at least one eccentric adjusting element (11).

Abstract: A brake structure for a wheel rotating device is disclosed, which comprises a motor provided in a wheel and is driven for rotating the wheel, and a braking mechanism for actuating brake to brake the wheel. The motor includes: a motor housing; a stator positioned in and fixed to the motor housing; and a rotor positioned in the motor housing and facing to the stator. The braking mechanism includes: a brake rotor to rotate with the wheel; frictional members to be in contact with the brake rotor for generation of braking force; a pressing force generating unit for generating pressing force of the frictional members so that the frictional members are urged to and pressed against the brake rotor by supplying brake fluid through a brake fluid passage to transmit fluid pressure; and a housing for the pressing force generating unit. The brake fluid passage is formed inside a wall of the motor housing, and is connected to a brake fluid supply port provided in the housing for the pressing force generating unit.

Abstract: A damper mechanism 6 is provided to transmit torque while absorbing and damping torsional vibrations. A small coil spring 45 achieves characteristics of a low rigidity in a small torsion angle region of the torsion characteristics when compressed by rotary members. A coil spring 33 achieves characteristics of a high rigidity in a large torsion angle region of the torsion characteristics when compressed by the rotary members rotating relatively to each other. A frictional resistance generating mechanism 7 generates a frictional resistance while each spring is being compressed. Owing to a rotating-direction space 79, the frictional resistance generating mechanism 7 does not operate in portions of the second stage of the torsion characteristics in response to vibrations and also does not in the first stage while a torsion angle is in a predetermined range.

Abstract: A shoe brake assembly for a rail vehicle including a bogie connected with the rail vehicle. The assembly also includes a wheel having a wheel web and radially inward-facing surfaces on opposite sides of the wheel web. Also included are at least two brake pads adjacent respective radially inward-facing surfaces of the wheel and a pendulum suspension arrangement connecting the at least two brake pads to the bogie. The assembly further includes an operating device configured to move the at least two brake pads via the pendulum suspension essentially radially against respective radially inward-facing surfaces of the wheel.

Abstract: An improved brake system is provided for a motor vehicle. The system includes a rotor attached to a rim of a wheel and a caliper assembly mounted to a hub of the wheel. The caliper is arranged to retain a friction element and operatively engage the friction element against the rotor.

Abstract: The brake system employs a ring braking member and a suspended brake caliper having a responsive linkage correcting the caliper and a knuckle support arrangement. The ring braking member is preferably die cast as a single component with a control hub and is of a lightweight, high temperature aluminum composite material. The brake system is designed to have a relatively thick ring brake member of this lightweight material to provide sufficient capacity to absorb the heat of braking and transfer of this heat to the surrounding air prior to the ring brake reaching a temperature where damage is likely to occur. The normal operating temperature is well below the theoretical maximum temperature or rated temperature of the composite material.

Abstract: The invention is one which provides in a brake device possessing an energy production unit, a force transmission unit which receives the drive force of the energy production unit and produces outputs by advancing and retreating, and a clutch unit which is provided between the energy production unit and the force transmission unit and maintains the advance and retreat positions of the energy force unit when outputs are produced, a guide structure which allows displacement of the force transmission unit and of the brake shoe in an advance and retreat direction relative to the force transmission unit. A buffer unit is provided in the guide structure which urges the force transmission unit and the brake shoe in separate directions and which, on transmission of a reaction force greater than the maximum output of the force transmission unit, allows the brake shoe to move in the advance and retreat directions.

Abstract: A braking method and apparatus wherein a rotating mechanism includes a deformable rotor carried by the rotating mechanism with pressure rollers suitable to contact the exterior of the deformable rotor and apply pressure to deform the rotor and thus cause the deformed rotor to resist rotation, resulting in a braking action.

Abstract: The present invention relates to ring brake arrangements and in particular to an effective arrangement for cooling of the brake. Heat is effectively rendered from the ring braking member by a fanned hub support arrangement which transfers the heat energy to an axial air flow which is pumped through the center of the brake. In addition heat is transferred to the brake caliper support bracket from the brake caliper. The brake caliper support bracket is located across the air flow which serves to cool the same. This structure is particularly well suited for high brake demand requirements where heat build up causes problems or reduces braking efficiency. The brake can also be used or can assist brake for trucks where the brake is located on the drive shaft.

Abstract: An improved brake actuator is disclosed that automatically adjusts for brake pad wear, thereby retaining a given retraction space from a fully actuated position. The actuator is hydraulically actuated and the components for positive retraction are housed within the hydraulic actuator, thereby protecting the components from the elements. The brake actuator has particular application for a ring brake having opposed cylindrical braking surfaces. An improved self-locking brake pad is also disclosed.

Abstract: The present invention relates to a vehicle brake and hub comprising a ring braking member having braking surfaces both to the interior and exterior of the member in combination with a cast hub which includes centrally disposed aligned bearing ports for receiving bearings. The cast hub includes an outwardly exposed securing surface which cooperates with the ring braking member to effect securement of the braking member to the casting and in a manner to accommodate heat transfer therebetween. The cast hub includes intermediate the securing surface and the align ports, fan blades which cause during rotation of the hub an axial flow of air to move across the bearing ports and to extract heat from the fan blades and the securing surface. The fan blades collectively interconnect and structurally secure the securing surface and the bearing ports.

Abstract: An escalator is provided with a caliper disc brake for stopping movement of the steps in cases of emergency. The disc is mounted on the main drive sprocket shaft, and the caliper is normally held away from the disc. When power is removed from the drive, the caliper is set on the disc to stop further movement of the steps. The braking torque of the brake assembly is adjustable to allow use of one basic assembly with escalators having different rises. The adjustment is accomplished by moving the center of gravity of the brake pads toward or away from the pivot axis of the brake lever. The brake can also be finely tuned at installation to provide an optimum stopping distance and time so that a too abrupt stop is avoided.

Abstract: The present invention relates to a vehicle brake and hub comprising a ring braking member having braking surfaces both to the interior and exterior of the member in combination with a cast hub which includes centrally disposed aligned bearing ports for receiving bearings. The cast hub includes an outwardly exposed securing surface which cooperates with the ring braking member to effect securement of the braking member to the casting and in a manner to accommodate heat transfer therebetween. The cast hub includes intermediate the securing surface and the aligned ports, fan blades which cause during rotation of the hub an axial flow of air to move across the bearing ports and to extract heat from the fan blades and the securing surface. The fan blade collectively interconnect and structurally secure the securing surface and the bearing ports.

Abstract: A drum brake has two sets of braking linings. The drum brake includes a brake plate and a brake drum. An additional cylinder is mounted on an outer periphery of the brake plate. The additional cylinder is actuated by hydraulic oil on depression of an additional brake pedal provided proximate to a clutch pedal of the car. A further brake lining is provided around an outer periphery of the brake drum. On depression of the additional brake pedal, the brake lining engages with the outer surface of the brake drum to provide additional stopping capability.

Abstract: A safety braking disk (56) is secured to rope drive sheave (14). First (52) and second (54) safety brake assemblies each operate on opposing parallel sides of the disk. Brake pads (60) are resiliently placed into engagement upon initiation of the safety. The safety is initiated upon car overspeed, movement with open car doors, or excess velocity in the leveling zone.

Abstract: A locking device is formed of a base, a grabbing member and a plurality of arcuate legs flexibly connecting the base and grabbing member. The grabbing member is operatively deformable by relative movement of the base and grabbing member toward and/or away from relative coplanarity therebetween to thereby expand or contract the grabbing member into or out of releasable locking engagement with a workpiece.

Abstract: A spot type brake having a disc or preferably ring brake member comprises a pair of brake pads on opposite sides of the brake member and a caliper with a hydraulic actuating unit for clamping the brake pads into engagement the brake member along a braking axis. The piston of the hydraulic actuating unit cooperates with a first brake pad and a bearing surface on the caliper cooperates with a second brake pad. The center or area of the bearing surface is circumferentially offset upstream or behind the braking axis relative to the direction of rotation of the brake member but the actuating unit is centered with respect to the first brake pad.

Abstract: A crown brake has its crown attached to a wheel disk by at least three connecting pieces comprising a radially flexible portion and an axially flexible portion in order to simplify the attachment of the crown to the wheel and to avoid repercussion of deformations of the wheel upon the crown.

Abstract: In accordance with the invention, a brake crown is fastened to a wheel disk in a crown attachment zone located between a major curved zone of the disk and a zone of attachment of the disk to a rim, and a central attachment comprises a cylindrical portion, a first curved zone against which a central bolt for fastening the disk to a hub rests and a second curved zone against which an attachment face of the hub rests.

Abstract: A crown-type caliper brake is disclosed comprising a cylindrical braking member and a C-shaped caliper member. The caliper member is mounted for sliding movement on the leg member of a fixed support of the brake. To this end a lobe on the caliper member has an opening which is received on the leg member extending parallel to the gripping axis of the brake along the direction of which the brake pads are applied by the caliper member against the braking member. The leg member is preferably of rectangular contour with its sides parallel to the axial gripping plane of the brake in sliding contact with corresponding surfaces in the lobe. Play between the other sides of the leg member and corresponding surfaces in the lobe is taken up by a leaf spring. Pins or studs extending between the limbs of the caliper member, or the intermediate portion of the caliper member itself, block the brake pads against circumferential displacement.

Abstract: The invention relates to internal-external shoe drum brakes, or so-called "crown" brakes in which the braking member is a drum or crown having braking surfaces formed on the annular inner and outer surfaces.The brake is provided with a calliper mounted on a fixed bracket, the calliper surrounding the crown and being adapted to apply brake shoes mounted on either side of the crown against the braking surfaces.The calliper is mounted on the fixed bracket for radial movement with respect to the crown and to this end is provided with at least one transverse lug formed with an aperture which slidably engages a guide pin mounted on the fixed bracket.The guide lug is formed separately from the calliper and is detachably secured thereto so that it can be released from the calliper when it is desired to change the brake shoes.

Abstract: The invention relates to a brake which is particularly suited to vehicles, and whose brake member is in the shape of a ring having axially-extending braking surfaces on the inner and outer surfaces thereof, and whose fixed support comprises two side members arranged on both sides of a generally C-shaped control member. According to the invention, these side members are coupled circumferentially to one another within the ring by a connecting bar whose circumferential ends are radially connected to the side members at the level of the regions thereof against which the inner brake pad can be brought to bear.

Abstract: A crown-type caliper brake comprises an axially elongate cylindrical braking member with respectively brake pads inside and outside the braking member and a caliper member operative to apply the brake pads against the braking member. The fixed support for the brake has two legs disposed respectively on opposite sides of an axial gripping plane containing a gripping axis through the central zones of the brake pads radially of the cylindrical braking member. Each of the legs has two fastener apertures for, e.g., a screw fastener and a pin respectively. One of the fastener apertures lies along a circle concentric with the axis of the cylindrical braking member substantially along which lie circumferential bearing surfaces on the legs for the brake pads. Preferably the apertures are disposed chordally of the braking member. A connecting bar may interconnect the legs outside the confines of the cylindrical braking member.

Abstract: A brake is disclosed comprising an annular cylindrical braking member with brake shoes respectively on the inside and outside of the braking member which are straddled by a C-shaped caliper member. The caliper member is pivotally and slidably mounted by a composite mounting assembly comprised of a pivot pin and a tubular bracing member received snugly thereon. The pivot pin acts in tension between opposed leg portions of fixed support while the bracing member acts in compression. A sealing pad or cap is disposed at each of the ends of the passageway in the caliper member through which the mounting assembly extends for providing fluid tightness thereat.

Abstract: A C-shaped caliper member straddles the hollow cylindrical braking member, a hydraulic actuator and brake shoes on the respective sides of the braking member. To axially retain the caliper member two circumferential, laterally projecting shoulders are provided on the end of the backing plate of at least one of the brake shoe remote from but facing the intermediate portion of the caliper member abutting against flats on the fixed support of the brake, an axial bearing surface extending from the opposite end of the backing plate, and an axial bearing surface on the caliper member or a part associated therewith axially beyond the first mentioned axially bearing surface, the axial bearing surfaces being cooperable with a removable retaining pin.

Abstract: There is described a brake shoe for a ring type brake which means it has a cylindrical brake ring secured to a member to be braked. The brake shoe comprises a part-cylindrical, preferably sheet metal support plate having on one face a brake lining and on the opposite face an elongate rib extending generally between opposed edges of the support plate and having a substantially flat bearing surface. Preferably the rib is stamped in the sheet metal support plate and receives a complementary portion of the brake lining material therein. The rib may be disposed cordally of the support plate or parallel to the generatrices thereof. Two such ribs may be provided on a support plate parallel to each other though spaced at different distances from median plane thereof. The contact areas of the substantially flat bearing surface with the piston of the hydraulic unit associated therewith are preferably dissymmetrical about one or both of the median planes of the brake shoe.

Abstract: A brake for vehicles comprises a brake drum rotating with a wheel, an inner pin fixed to a vehicle body within the brake drum, an inner shoe whose end is pivotally supported by the pin, an arm formed integrally with the inner shoe and extending outwardly beyond the brake drum, an outer pin extending from the end of the arm, an outer shoe pivotally supported by the outer pin and adapted to be in contact with the outer periphery of the brake drum, and actuating means for urging the inner and outer shoes toward and away from the brake drum, whereby a braking force acting upon on one shoe helps the braking action of the other shoe to provide a sufficient braking force by a slight brake operating force.

Abstract: Inner and outer brake shoes are swivel-mounted on the arms of a yoke. When the yoke is rotated, the shoes move concurrently toward and away from inner and outer braking surfaces of a brake drum. The swivel mounting facilitates optimum seating engagement with the braking surfaces and in cases where the drum is warped, serves to maximize braking area and minimize wear. Stops positioned near opposite ends of the shoes limit their circumferential movement. An electric puck or a hydraulic actuator is used to rotate the yoke.

Abstract: A caliper brake adapted to grip the sides of a clamped member and, more specifically, the sides of solid and ventilated discs such as those used in industrial and automotive applications. The present caliper brake includes a base adapted for mounting on a support which is fixed in relation to a movable clamped member. A pair of levers are pivotally mounted intermediate their ends in base lugs. A linear actuator is operatively mounted on one end of the levers and a pair of shoes having shoe lugs are pivotally mounted at the other. Guide surfaces on the shoe lugs are slidably opposed to guide surfaces on the base lugs such that during movement of the shoes toward each other the shoe brake surfaces are maintained substantially parallel with the sides of the clamped member.

Abstract: A drum-type brake adaptive to front and rear-axle constructions on motorized vehicular equipment, in which braking torques are developed by one or more radially-operating caliper units positioned around the circumference of an open brake drum co-rotatable with the vehicle road wheel. The caliper unit comprises an inner and an outer segmental brake shoe which carry detachable linings, respectively, in spaced confronting relationship that straddle-mount the drum's flange to apply braking forces to opposite faces, respectively, thereof, and reciprocative mechanism including a pair of interengaging push-pull members projecting from the brake shoes, respectively, and slidably installed along the radius of the drum's backing plate.

Abstract: An emergency brake unit that is hydraulically operated which may be removably secured in pairs to the axle of a pneumatic-tired freight vehicle. In an emergency the pair of brake units may be concurrently actuated to bring first and second braking surfaces into frictional contact with both the interior and exterior surfaces of the brake drums with which they are associated. Each of the emergency brake units is of such structure that it may be used with a brake drum of either a left or right pneumatic-tired wheel. The braking surfaces of the emergency brake units are preferably metallic, and are brought into metal-to-metal contact with the exterior and interior surfaces of the brake drum when the units are actuated by hydraulic fluid under pressure.

Abstract: Brakes for automobile vehicles for example, of the kind comprising a fixed support, a braking member having a ring, two braking plates disposed on each side of the ring and a floating stirrup engaged on the plates and on the ring. The stirrup has operating means adapted to act directly on one of the plates and indirectly on the other, through the intermediary of the stirrup, so as to grip and brake the ring. The stirrup is mounted with a simultaneous sliding and pivoting action of the fixed support, so as to follow any possible conical deformation of the ring on which it is engaged, due to heat stresses for example. The rear transverse face of the stirrup is in simple supporting contact with a retaining member secured to the fixed support, and which permits the sliding and pivotal movements of the stirrup, an elastic spring being provided to urge the stirrup and the retaining member into contact with each other.