Abstract: A brake actuator has a motor that provides input rotation in first and second directions. A reducer couples to the motor and reduces the input rotation into an output rotation to be applied to a brake screw of a progressive cavity pump drive. A sensor measures rotational speed of the drive shaft. In manual operation, an operator can view an indication of the rotational speed and can manually operate the motor accordingly to control rotation of the shaft. In automated operation, a controller automatically controls the motor based on the rotational speed measured by the sensor. The controller can also use a torque sensor to detect the torque applied to the brake screw, a displacement sensor to detect displacement of the brake screw, and/or a current sensor to detect the current consumption of the motor.

Abstract: A disc brake device for applying brake to wheels by pressing a disc rotor between pads, the disc brake device includes: pads disposed at a position to press the disc rotor; a first piston which can press one pad; a cylinder which slidably supports the first piston; and a body frame which can press the other pad, the body frame having: a pad connection portion which connects to the other pad in a push-pull manner; and a sliding portion which is slidably supported by the cylinder. The disc brake device includes a caliper bracket which supports the pads not to limit a movement in the axial direction, but to limit a movement in any direction other than the axial direction on disc-rotor-rotating-in and disc-rotor-rotating-out sides of the disc brake device, the caliper bracket being provided integrally with the cylinder and separated from the pad connection portion.

Abstract: The present invention provides a disc brake caliper. The disc brake caliper has a housing and a piston for moving a friction element into contact with a rotor. A yoke is provided for at least partially guiding the piston, and the yoke is positioned within the housing and moveable relative to the housing. A guide member along which the yoke is slideable is provided, and the guide member is a component separate to the yoke and the housing, and is mounted to the housing.

Abstract: A multi-layer brake pad assembly includes a layer of friction material, a layer of thermal insulating material, and a backing plate. The thermal insulating material is a fiber reinforced ceramic matrix composite with a high fracture toughness and low thermal conductivity that is disposed between the friction material and the backing plate and restricts the heat flow transmitted through the backing plate into the hydraulic fluid during severe braking, thereby minimizing the onset of brake loss due to hydraulic fluid vaporization as a result of overheating.

Abstract: A disc brake comprising a floating stirrup and a brake piston controlled via a motion conversion cartridge (200) comprising a rear part pressed against the bottom (114) of the housing (113) in the stirrup (100) and a control shaft (220) passing through the bottom. The front part (260) of the cartridge is pressed against the brake piston. It comprises a piston (270) provided with a plate cooperating with the plate of the control shaft (220) with the interposition of balls cooperating with tracks in the form of ramps to transform the relative rotational motion of one plate relative to the other into a translational motion of the piston (270). The cartridge (200) is held in place in its housing (113) by a cage (290) elastically attached to the wall (117, 118) of the housing (113).

Abstract: A disc brake comprising a floating stirrup and a brake piston controlled via a motion conversion cartridge (200) comprising a rear part pressed against the bottom of the stirrup and a control shaft passing through the bottom. The front part of the cartridge is pressed against the brake piston. It comprises a piston (240) provided with a plate (242) cooperating with the plate (212) of the control shaft (210) with the interposition of balls cooperating with tracks in the form of ramps for transforming the relative rotational motion of the plate (212) relative to the other (242) into a translational motion of the piston (240). The cartridge (200) is held in place in its housing (113) by a cage (260) attached elastically to the wall of the housing. The plate of the piston (240) comprises longitudinal grooves (243) receiving the branches (233) of a lock (230) which is elsewhere blocked in rotation in the housing of the stirrup while leaving the conversion piston (240) free in translation.

Abstract: Flexible sheathing for the protection of piston-cylinder units for disc brakes are provided. Such flexible sheathing may be arranged in a retracted condition wherein the piston is completely accommodated within the cylinder and in an extended condition wherein the piston is completely extracted from a caliper body defining the cylinder, said piston having a piston outer surface suitable to co-operate with a cylinder inner surface of the caliper body which accommodates the piston, said outer surface having a predefined piston diameter and said cylinder inner surface having a predefined cylinder diameter, wherein said piston comprises a piston body and a head thereof suitable to press against a pad of the disc brake.

Abstract: A system for a drive for actuating a parking brake operably involves a brake caliper. The brake caliper has at least one brake piston with a brake piston axis, the piston being actuatable by means of an operably actuating lever with a rotational center. An electric motor is fixed to the brake caliper and mechanically coupled to the actuating lever with the output shaft that exits the electric motor.

Abstract: A hub brake for a bicycle mainly comprises a fixed brake disc, axial displacement brake disc and brake member. The axial displacement brake disc is driven by the brake member to yield axial displacement, thus realizing axial hub braking through frictional abutting of the fixed brake disc. As the fixed brake and axial displacement brake disc are both of simplified disc or block structure, the manufacturing process can be streamlined for mass production, while convenient and efficient assembly from one end of the hub is made possible. As for the ringed brake interface formed between the fixed brake disc and axial displacement brake disc, its friction area is not less than that of conventional drum or caliper brake interface. Hence, the hub brake components of the bicycle could be greatly simplified, and the weight and assembly space could be reduced for easier production, convenient assembly and satisfactory braking performance.

Abstract: A disk brake including: a brake pad; a piston; a cylinder bore; an annular sealing groove formed on the cylinder bore; and a rectangular piston seal fitted into the sealing groove sealing between the piston and the cylinder bore, wherein the sealing groove includes: a bottom surface portion inclined as the sealing groove expands its diameter; a lateral surface portion that extends from one end of the bottom surface portion, the one end being a side where the sealing groove has the maximum diameter; and a chamfered portion, and wherein an inclined angle of the bottom surface portion is 2 to 8 degrees, an angle between the bottom surface portion and the lateral surface portion is 82 to 89 degrees, and with the piston installed into the cylinder bore, the piston seal abuts against the bottom surface portion and the lateral surface portion of the sealing groove.

Abstract: Provided is a rear wheel toe angle control system that can prevent the impairment of the tracking performance of the electric actuator and enable the rear wheel toe angle control system to ensure the stability of the vehicle even when the electric actuator for steering the rear wheel according to the operating condition of the vehicle is subjected to an axial force. An ECU (12) serving as a rear wheel toe angle control unit for variably controlling the rear wheel toe angle (?r) of the motor vehicle (V) by using an electric actuator (11) is provided with a duty ratio correcting unit (25) that corrects the target duty ratio (Dtgt) for achieving the target rear wheel toe angle (?rtgt) according to the load condition of the electric actuator (11) that depends on the lateral acceleration (Gy) of the motor vehicle (V).

Abstract: A disk brake including a mount member having a pin insertion portion integrally connected to a connection portion so as to outwardly protrude from an outer surface of the connection portion in a radial direction of a disk rotor. A tip of a pin insertion hole of the pin insertion portion is positioned at an inner side of a vehicle relative to an outer portion. Thus, it is possible to prevent a braking torque from affecting the pin insertion portion of the mount member. As a result, it is possible to prevent a slide pin from interfering with an inner wall surface of the pin insertion hole, thereby preventing a brake judder phenomenon from occurring during a braking operation.

Abstract: Disc brake comprising an hydraulic actuator for clamping shoes guided by a caliper (14) and an annular seal (10) lodged with axial clearance (J) in a groove (28) of the actuator for ensuring fluid-tightness between the piston (16) and the cylinder of the actuator, characterized in that the groove (28) comprises a rib (40) for the axial locking of the seal (10).

Abstract: The invention relates to a disk brake with an electromechanical actuator which, for example, has a piezo-element, and with a hydraulic self-energizing device. In order to control the self-energizing effect, the invention provides a valve hydraulically between an auxiliary piston of the self-energizing device and a brake piston of the disk brake with which the brake piston can be hydraulically isolated from the auxiliary piston. This means that the self-energizing effect of the disk brake can be switched off. Using a modulated valve control and/or use of a proportional valve, the level of the self-energizing effect can be controlled or regulated. In order to avoid a blockage, the invention additionally provides a blockage protection valve with which the auxiliary piston or the brake piston can be connected to a hydraulic accumulator at ambient pressure.

Abstract: A disc brake device in which uneven wear on the brake pads is prevented. Each brake pad has a set pin hole at one end in which a set pin is fitted, and a torque-receiving component for receiving braking torque in the other end. The pistons for pressing the brake pads are composed of first and second pistons. A center of the first piston near the set pin is located further inside from the middle of the sliding range of the brake pads, and the distance from the set pin is extended.

Abstract: A self-energizing disc brake includes a brake-internal hydraulic arrangement with a supply circuit and an expansion vessel; a brake application device with a brake application cylinder for applying a brake pad toward a brake disc; a force transmission unit supporting the brake pad at a wedge angle on the brake application device; a tangential-force absorbing cylinder for switching over the wedge angle; an electric-motor actuator acting on the brake application device via the hydraulic arrangement; a distributor cylinder arranged in series between the electric-motor actuator and the brake application device for pressure boosting; and a control unit. A parking brake device has an adjustable screw spindle for adjusting the brake pad, which spindle is coupleable to the electric-motor actuator for driving. The tangential-force absorbing cylinder is connectable hydraulically to the supply circuit and the expansion vessel.

Abstract: An illustrative brake apparatus includes: a brake body; a first retaining means for retaining a brake shoe against the brake body while permitting the brake shoe to be actuated in a brake actuation direction; and a second retaining means for selectively retaining the brake shoe against lateral movement in a direction of movement of an object to be braked. An illustrative brake shoe retainer apparatus includes: first and second brake shoe connectors connectable to respective spaced apart regions of a brake shoe; a force transfer element connectable to the first and second brake shoe connectors; a guide connectable to a brake body and configured to guide the force transfer element relative to the brake body in a brake actuation direction and in a direction opposite the brake actuation direction; and a means for urging the force transfer element in the direction opposite the brake actuation direction.

Abstract: A caliper comprising: a piston bore and a seal groove located in the piston bore proximate to an open end of the piston bore, the seal groove comprising: a front wall; a rear wall; a bottom wall spanning between and connecting the front wall to the rear wall; a projection in a central region of the bottom wall suitable for allowing twisting of a seal during a brake retract and/or brake release; wherein the rear wall diverges away from the front wall as the rear wall extends away from the bottom wall and towards the bore surface.

Abstract: A disc brake provided with a guide spring capable of preventing a vibration of a pad plate having a friction pad mounted thereon, and capable of separating the friction pad from a disc in a rapid manner after a braking operation is finished, the disc brake including a disc rotating together with a wheel of a vehicle, two pad plates disposed at both lateral sides of the disc, respectively, to perform a braking by pressing both lateral side surfaces of the disc and each having a friction pad, a caliper housing and a piston that are configured to press the pad plate, and a guide spring enabling the pad plates to operate as an integral body and absorb shock.

Abstract: The bottom surface of a seal groove provided in a cylinder bore has a first slant portion and a second slant portion. A transition point between the first slant portion and the second slant portion is located closer to the opening of the cylinder bore than the center in the cylinder bore axial direction of the seal groove. A gap is formed between the outer peripheral surface of a piston seal member and the bottom surface of the seal groove, and the surface pressure applied to the bottom surface of the seal groove from the piston seal member is higher at the cylinder-bottom-side end of the piston seal member than at the cylinder-opening-side end thereof. Thus, it is possible to suppress the movement of the piston toward the cylinder bore bottom due to thermal expansion of the piston seal member.

Abstract: A fixed caliper brake for a motor vehicle, including a housing with two housing limbs and a housing bridge connecting the housing limbs in a flexurally rigid manner at a defined distance from one another, pistons, which are received in bores in the housing limbs and are guided displaceably along an axis A in relation to the brake disk, and brake pads which are provided in pairs, are guided in an axially displaceable manner in the housing and arranged in the circumferential direction while being supported against circumferential forces, each brake pad being actuable directly by at least one piston. The brake pads are supported in a form-fitting manner on the housing bridge at least on the run-in side. At least each arm on the run-in side is configured with a hook shape open on the radially outer side and serves at least partially for form-fitting abutment against the housing.

Abstract: A control device (10) for a brake-power-assisted brake system of a vehicle having a first input device (26) for a supplied first information item (28) relating to a supplied assistance force (Fu) of a brake booster (14) of the brake-power-assisted brake system, a second input device (30) for a supplied second information item (32) relating to a total force (Fg) comprising the assistance force (Fu) and a driver braking force (FI) supplied by activation of an activation element (12) of the brake-power-assisted brake system, an evaluation device (36) which is configured to define a third information item relating to a proportional relationship between the total force (Fg) and the assistance force (Fu) taking into account the first information item (28) and the second information item (32), and an output device (44, 50) which is configured to supply at least one control signal (46, 52) to at least one component (14, 54) of the brake-power-assisted brake system taking into account the defined third information ite

Abstract: A brake caliper comprising a piston seat (10) wherein a piston (2) slides with its side surface (11) in contact with a radial surface (13) of an elastic member (12). The member further comprising two axial surfaces (15,16) adapted to be affected by a pressurized fluid and being arranged at the piston coming out side facing the pads respectively. The latter surface facing with a portion (17) thereof, a first chamber (18) arranged in the proximity of the piston side surfaces, with another portion (24) thereof, an abutment surface (19) adapted to support said elastic member when it is urged by the pressurized fluid, said abutment surface being radially retracted so as to be farther from the piston side surface than said first chamber and with a further portion (25) thereof, at least one second chamber (20) arranged radially farther from said piston side surface than said abutment surface.

Abstract: A torque plate for a vehicle brake is comprised of a sheet metal body. The sheet metal body includes a center opening that defines a lateral axis and a plurality of mounting holes. The center opening receives an axle housing and the mounting holes are used to secure the vehicle brake to the torque plate. Each mounting hole is defined by a center axis that is non-parallel to the lateral axis.

Abstract: The invention relates to a disc brake having at least one brake disc, at least one friction lining and at least one actuating apparatus, wherein the actuating apparatus comprises at least one actuating piston which is movably housed in a housing of the disc brake and a sealing element having a first sealing surface configured to produce a sealing contact to a contact surface of the housing, and a second sealing surface configured to produce a sealing contact to a contact surface of the actuating piston in order to seal the actuating piston to the housing, wherein at least one of the sealing surfaces comprises a friction surface configured so that it maintains the sealing contact to the contact surface in the case of a movement of the actuating piston relative to the housing and furthermore allows a frictionless movement of the actuating piston relative to the housing.

Abstract: A shim plate is provided at the rear side of a friction pad to abut annular contact parts of pistons. The shim plate is provided with first and second one-side cut portions and at a position corresponding to the annular contact part of a disk rotational entrance-side piston, for example, so that the area of contact between the shim plate and the annular contact part is larger at the disk rotational exit side than at the disk rotational entrance side. The first and second one-side cut portions and have four contact ends at which the peripheries of the cut portions and the annular contact part intersect each other. At least two of the four contact ends are provided on the disk rotational entrance side with respect to the diametrical center of the piston.

Abstract: A two-stage slave cylinder including a housing and a bore extending within the housing. An outer piston is slidably positioned within the bore in the housing, and an outer piston chamber is defined by the bore and the outer piston. The outer piston chamber is connected to a hydraulic fluid source by a fluid passageway. A biasing mechanism acts to bias the outer piston in an unactuated position unless a force is exerted on the outer piston that is greater than the biasing force. A bore is provided in the outer piston, and an inner piston is slidably positioned therein. An inner piston chamber is defined by the bore and the inner piston, and an opening is provided in the outer piston to connect the outer piston chamber to the inner piston chamber. A valve assembly is provided within the opening in the outer piston to control the flow of fluid between the outer piston chamber and the inner piston chamber.

Abstract: A brake pad actuating device comprising: a piston including: a first pocket; an opposing second pocket; and an internal wall located in the piston separating the first pocket and the second pocket, wherein the volume of the first pocket to the volume of the second pocket form a ratio of less than about 20:1; and wherein the piston is adapted to be used as a brake piston.

Abstract: A vehicle includes a vehicle body and a braking device configured to exert a braking force on the vehicle body, wherein, in a state that a driver gets in the vehicle, the braking device makes a braking force on a side near to a center of gravity larger than a braking force on a side far from the center of gravity in a direction orthogonal to a traveling direction of the vehicle body as an initial setting by a difference of supplied hydraulic pressure, a mechanical structure such as a difference of a brake performance, and an electric setting such as a difference of a calculated expression. Thereby, deflection of the vehicle body can be effectively suppressed during braking.

Abstract: A pressing part is provided at a disk-circumferentially central portion of a base plate member of a shim plate. The pressing part presses a friction pad at the center in the disk circumferential direction of the friction pad when a piston starts to press the friction pad. The pressing part is formed by slitting and raising the disk-circumferentially central portion of the shim plate along the disk radial direction. When the pressing force of the piston is in a low pressure range, the pressing force is transmitted to the friction pad through the pressing part. After the pressing force of the piston has exceeded the low pressure range, the pressing force is transmitted to the friction pad through the whole region in the disk circumferential direction of the piston.

Abstract: A braking system having a master cylinder to which wheel brake circuits (I, II) can be connected, a first piston coupled to a brake pedal, a second piston by means of which the master cylinder is actuated, a third piston actuated by the first piston and connected in a force transmitting fashion to the second piston, a simulation device which gives the driver of the vehicle a pedal sensation, an intermediate space between the second piston and third piston, a pressure generating device which controls the pressure in the intermediate space, a pressure medium reservoir vessel which is under atmospheric pressure and which can be connected hydraulically to the intermediate space, and means for electrically controlling the pressure in the intermediate space.

Abstract: A force transmission device for a disc brake operable to move a friction element of the brake into engagement with a rotary brake disc along a first axis in response to a loading from an actuating member, the device comprising: a guide member having a generally cylindrical guide form; a piston comprising a complementary generally cylindrical outer sliding surface slideable within the guide member, wherein; an anti-rotation formation is provided between the guide member and the piston, the formation comprising a recess extending generally parallel to the first axis and a complementary projection.

Abstract: A wet disc brake system is described which includes a housing assembly and brake callipers. The housing assembly is provided with openings for seating cylinders of respective brake callipers. The callipers are coupled to a structural component of a vehicle to which the system is fitted and in particular a flange of an axle housing. This enables reactive forces created during a braking operation to be transmitted via the callipers to the flange and axle housing rather than being carried by housing assembly. As the housing assembly does not bear any substantive load, it may be made of a relatively light weight construction or material.

Abstract: A pneumatic disc brake has a brake caliper extending over a brake disc, wherein a brake cylinder, to which compressed air can be applied, and at least one further functional part are fastened on a flange of the brake caliper. The brake cylinder is provided with at least one indentation at least in the overlapping region with the at least one functional part.

Abstract: An electronic antiskid brake assembly with a portable power source that can retrofit onto a working manual brake system to provide antiskid capabilities without effecting the manual brake system's normal operation. The antiskid system can be applied anywhere on a brake linkage. When a force is applied to a brake pad, an electronic controller utilizes detects a skidding event, and then automatically powers on an actuator. The actuator moves a brake linkage to create a pulse mode on the brake linkage. The pulse mode modulates the force that is applied to the brake pad. A one way cylinder can be included with a manual hydraulic brake system to provide a mechanical means for generating pulse mode on the brake linkage. The power source can move with the brake linkage so that the actuator pulses the brake linkage a small amount, while the brake linkage applies full braking.

Abstract: A back plate is biased radially inward of a disc rotor by a spring, engaged at two locations on a torque reception surface with a caliper support shaft, and engaged at one location on a torque reception surface with a caliper support shaft. Inner and outer shims are disposed toward a back plate and pistons, respectively, and a friction factor between the back plate and the inner shim and that between the pistons and the outer shim are higher than that between the inner and outer shims. The inner shim is movable with the back plate in radial and circumferential directions and is movable relative to the back plate in the axial direction, and the outer shim is movable with the back plate in radial and circumferential directions, is movable relative to the back plate in the axial direction, and is rotatable about the radially inner support shaft axis.

Abstract: A disc brake includes a brake disc, a sliding caliper, a single piston, and a brake pad carrier comprising a leading part and a trailing part. The brake pad carrier includes mounting features for securing the brake pad carrier to an associated structure of a vehicle. The mounting features define a mounting side and a non-mounting side of the brake. A mounting side brake pad comprises mounting side friction material and a non-mounting side brake pad comprising non-mounting side friction material. The center of pressure of the non-mounting side friction material is circumferentially aligned with the piston and the center of pressure of the mounting side friction material is offset in relation to the piston towards the leading part of the brake pad carrier.

Abstract: A hydraulic brake hose structure is basically provided with a hydraulic brake hose and a first sealing material. The hydraulic brake hose has a first end with a first opening and a second end with a second opening. The first sealing material overlies the first opening of the first end to form a first seal that seals the first opening of the first end. The first sealing material ruptures at a prescribed hydraulic fluid pressure threshold.

Abstract: A caliper disc brake includes a caliper housing having a cylinder, a piston moving forward and backward within the cylinder, a dust seal mounted at a front end of an opening of the piston, first and second sealing members provided between an inner surface of the cylinder and an outer surface of the piston. The first sealing member is provided at the rear of the dust seal. The second sealing member is separated from the first sealing member by a designated interval. Oil channels to communicate a space around the outer circumferential surface of the piston, formed by the first sealing member and the second sealing member, and a space around the rear surface of the piston, formed by the second sealing member and the cylinder, with each other to operate a rollback function of the second sealing member are formed in the piston.

Abstract: An opposed-piston disc brake includes cylinder connection oil passages respectively connected to a cylinder of an inner caliper portion and a cylinder of an outer caliper portion, passage communication bores respectively formed at bridge portions to extend in an axial direction of a disc in a substantially straight manner. The cylinder connection oil passages are formed using a core at the time when a caliper body is cast. The cylinder connection oil passages extend in a radially outer direction of the disc. Ends of the cylinder connection oil passages in a longitudinal direction thereof are directly connected to the passage communication bores. In a state where the caliper body is mounted on a vehicle, a top portion of an inner wall surface of one of the passage communication bores is positioned higher than the ends of the cylinder connection oil passages.

Abstract: A disk brake device for rail vehicles includes a brake disk for attachment to a chassis and a brake assembly for providing a braking force. The brake assembly has a brake cylinder and a brake caliper that carries a brake pad for cooperating with the brake disk. A sensor is provided on a force transmission path from the brake cylinder to the brake pad. The sensor is configured and arranged to detect a force transfer to the brake disk.

Abstract: Provided are, among other things, pistons and piston noses. One representative embodiment involves a brake piston that includes a piston body and a top surface, in which the top surface is wider than the piston body and has a small portion that is slightly raised, relative to the rest of the top surface, so that when in use only the small raised portion makes contact with a backing plate of a brake pad.

Abstract: A disk brake apparatus that can suppress vibration and a brake noise phenomenon in a low deceleration range and increase braking force in a high deceleration range. In the low deceleration range a push surface at a tip of a small-diameter push portion of an inner piston pushes a back plate of a brake pad at a center of the push surface corresponding to a radial inside where deflection and inclination of a disk rotor is insignificant, thereby suppressing the vibration and brake noise phenomenon in the low deceleration range. In the high deceleration range the back plate of the brake pad is pushed at a radially outside push location of the disk rotor in an aperture-side end face of an outer piston, thereby making the braking force in the high deceleration range larger than the braking force in the low deceleration range.

Abstract: A device (10) for damping the vibrations in a pad (16) of a disc brake suitable for being mounted between at least one pad (16) and at least one piston of a caliper of a disc brake. The device (10) comprises at least one substantially cylindrical damper (26) suitable for being mounted with interference in a cavity (28) made in the piston (22). The damper (26) has an interference surface (30) comprising at least one projection (32) that extends radially and that at least partially wraps around the damper (26) according to a direction having at least one tangential component (T). The damper (26) is suitable for being fixedly connected to the piston (22) through said coupling by interference. Said interference surface (30) of the damper comprising two or more projections (32) defining an undulating axial profile (34) of said interference surface (30).

Abstract: A disk brake includes a caliper body having a cylinder portion 25 with a cylindrical shape. The cylinder portion 25 has a bore 30 with a bottom 34 formed by integrally joining together an opening peripheral edge 98 at the bottom side of the cylinder portion 25 and a bottom cover member 92 to be fitted to the opening peripheral edge 98 through friction stir welding. The bottom cover member 92 has a disk shape and is friction-stir-welded along the outer periphery thereof. The terminating point of the friction stir welding is within the boundaries of the bottom cover member 92.

Abstract: An apparatus is disclosed for safely lowering a user from a structure. The apparatus includes a frame; a spool including a cable rotatably mounted on the frame; a securing device attached to the cable and adapted to securely attached to the structure; a user support adapted to support the user and securely attached to the frame; and a pair of centrifugal hydraulic brake systems adapted to slow a rotation of the spool to cause the user support, spool and frame to descend at a safe rate for the user. In another embodiment, the apparatus includes a frame; a spool including a cable rotatably mounted on the frame; a securing device attached to the frame and adapted to securely attached to the structure; a user support adapted to support the user and attached to the cable; and a pair of centrifugal hydraulic brake systems adapted to slow a rotation of the spool to cause the user support to descend at a safe rate for the user.

Abstract: An exemplary embodiment of a brake caliper has a housing with a first chamber and a second chamber. The brake caliper also has a first piston that moves in response to fluid pressure in the first chamber and has a second piston that moves in response to fluid pressure in the second chamber. A brake pad has a leading end portion that is acted upon by the first piston and has a trailing end portion that is acted upon by the second piston. A fluid passage leads to the first chamber. The trailing end portion contacts an associated rotor before the leading end portion contacts the rotor.

Abstract: A rotor brake for a rotary-wing aircraft includes a rotor shaft, a braking-force actuator configured to be hydraulically actuated, a braking-force pick-up element connected to the rotor shaft and operationally connected to the braking-force actuator, an electromechanical piston control element, and a first hydraulic line connecting the electromechanical piston control element to the braking-force actuator so that the braking-force actuator can be actuated electrohydraulically by the electromechanical piston control element.

Abstract: A pneumatic disc brake device for a railway rolling stock which can produce two times the conventional braking force when the brake cylinder diameter is the same comprises first and second brake levers (1, 2), a pair of brake pads (4) which are mounted through brake heads (5) at one end of the brake levers so as to oppose to a brake disc, and a brake cylinder (6) disposed between the other ends of the first and second brake levers, wherein the brake cylinder (6) comprises a first cylinder part (6a) and a second cylinder part (6b) disposed in series.

Abstract: This invention relates to a brake caliper adapted for use in a vehicle disc brake assembly and method and apparatus for producing the same. The method for producing the brake caliper comprises the steps of: (a) providing a mold member having at least two mold sections; (b) providing a core member having at least a first male extension which is adapted to form an integrally cast locating recess in the brake caliper which is used as a locating surface for subsequent machining of the brake caliper; (c) disposing the core member in the mold member in a predetermined position; (d) supplying a suitable material to the mold member so as to form a brake caliper within the mold; (e) removing the brake caliper from the mold, wherein the brake caliper includes an integrally cast locating recess formed therein by the first male extension of the core member; and (f) machining the brake caliper using at least the integrally cast locating recess formed therein as a locating surface.