Abstract: A vehicle braking apparatus varies a relationship of a pressure increase characteristic of rear-wheel brake oil pressure with respect to a pressure increase characteristic of front-wheel brake oil pressure according to a determination result of a likelihood of a collision with an obstacle. Preferably, when the likelihood of a collision with an obstacle is lower than a predetermined level, the relationship of the pressure increase characteristic of the rear-wheel brake oil pressure with respect to the pressure increase characteristic of the front-wheel brake oil pressure is caused to be a relationship in which a wheel cylinder pressure of the rear wheel increases not earlier than wheel cylinder pressure of the front wheel.

Abstract: A hydraulic pressure generator for a vehicle brake system comprises a piston and a cylinder that movably accommodates the piston. The piston defines a first hydraulic chamber and a second hydraulic chamber in the cylinder on opposite piston sides, wherein each hydraulic chamber has a hydraulic inlet and a hydraulic outlet. An actuating unit is able to put the piston into a back-and-forth motion so that an intake stroke with regard to the first hydraulic chamber corresponds to a discharge stroke with regard to the second hydraulic chamber, and vice versa.

Abstract: The spring device includes a part using the resilient properties of the material from which the part is made. There are at least two opposite points or areas, which are to be biased. The device includes, between the points or areas, an intermediate portion including a mesh structure resulting from the assembly of optionally rectilinear segments, at least two of which lie in separate planes, both outside of the direction of bias. During the biasing, one segment is longitudinally biased by compression and the other is longitudinally biased by pulling.

Abstract: A park brake actuator (“PBA”) may comprise a shaft having a friction hub disposed about the shaft, the friction hub fixed against rotation with respect to the shaft, a permanent magnet array (PMA) disposed circumferentially about the shaft, the PMA comprising a cylindrical structure comprising a Type A magnet adjacent a Type B magnet in an annular arrangement, and a coil disposed circumferentially about the PMA and configured to conduct at least one of a positive current pulse and a negative current pulse.

Abstract: In brake control based on commands of a plurality of systems, an adjustment valve adjusts fluid supplied from a fluid source to a predetermined pressure to output the pressure-adjusted fluid. An output valve switches opening and closing based on a switching command. A skid detector detects whether a car is skidding or not and notifies a brake controller. The brake controller determines a pressure of fluid output by a control valve and issues a command to solenoid valves provided in the control valve. The brake controller issues a command to a discharge valve to discharge fluid from the discharge valve when a skid is detected. A relay valve adjusts pressure of fluid from the fluid source based on a higher pressure between a pressure of fluid output by the output valve and a pressure of fluid output by the control valve, to output the pressure-adjusted air to a brake cylinder.

Abstract: A shock damper is disclosed. The shock damper may have a shear control apparatus through which a shear-thickening fluid may flow. In this manner, the shock damper may compress at different rates for different applied impulse forces, in response to the changing viscosity of the shear-thickening fluid.

Abstract: An electric brake actuator includes first and second electric motors and an actuator output, a first cycloidal speed reducer having a first reducer input rotatable about a first reducer axis and operatively connected to the first motor output gear to receive a first driving force, and a first reducer output rotatable about the first reducer axis and operatively connected to the actuator output to transfer the first driving force to the actuator output, and a second cycloidal speed reducer having a second reducer input rotatable about a second reducer axis and operatively connected to the second motor output gear to receive a second driving force and a second reducer output rotatable about the second reducer axis and operatively connected to the actuator output to transfer the second driving force to the actuator output.

Abstract: An actuator for an electrical parking brake system can decrease the number of components and reduce noise generated in an operation of the actuator. The actuator includes a case, a motor installed in the case to provide power, a driving gear provided to a rotary shaft of the motor, a pair of transmission members installed inside the case to reduce torque of the driving gear and transmit the reduced torque, and an output gear provided to an output shaft to additionally reduce the reduced torque transmitted through the transmission member and output the additionally reduced torque through the output shaft.

Abstract: A brake caliper includes: a caliper body which slidably houses a mechanically operated piston which presses a brake disc; a rotation cylinder member which is arranged alongside the mechanically operated piston, coaxially with the mechanically operated piston, and which is rotatably supported on the caliper body; a rotation arm which is fixed to the rotation cylinder member, and which rotates the rotation cylinder member by means of an operation of an operating element; a conversion mechanism which is provided between the rotation cylinder member and the mechanically operated piston, and which converts rotary motion of the rotation cylinder member into axial linear motion of the mechanically operated piston to thereby press and move the mechanically operated piston toward the brake disc side; and a return spring which biases the mechanically operated piston in a direction of moving away from the brake disc.

Abstract: An air-cooled piston cap assembly is provided for use in a disc brake caliper that includes a piston cap, and a piston body having a proximal end and a distal end which is slidably movable within a caliper bore along an axis. The piston cap includes a retention portion mounted within the distal end of the piston body, a contact portion located opposite from the retention portion that contacts a brake pad assembly, and an intermediate portion connecting the retention portion with the contact portion. The outer surface of the intermediate portion defines an extended heat exchange path between the contact portion and the retention portion, and may for example hourglass-shaped. An air gap is provided between a top edge of the piston body and an undersurface of the contact portion of the piston cap that allows air to circulate over the extended heat transfer path defined by the outer surface of the contact portion and intermediate portion to cool the cap from frictional heat generated during braking.

Abstract: A brake assembly includes a brake pad, a bracket supporting the brake pad and having a first portion, a second portion spaced apart from the first portion, and a linkage interconnecting the first and second portions. The linkage is configured to transfer tensile loads between the first and second portion, but is characterized by the absence of any bending modes. The absence of bending modes prevents excitation of the linkage, thereby reducing sound generated during application of the brake assembly.

Abstract: A vehicle brake device includes a failure detection means for driving the master piston only by the operation force of the brake operation member along with the operation of the brake operation member, thereby to detect a failure of a master system, when a master cylinder pressure correlation value correlated to the master cylinder pressure is less than a predetermined value, in a case where an operation amount of the brake operation member is a predetermined amount or in a case where the operation force of the brake operation member is a predetermined force; and a driving control means for driving the master piston by force corresponding to the servo pressure in the servo chamber generated by the servo pressure generation portion, when the operation amount of the brake operation member is greater than a predetermined amount, or when the operation force of the brake operation member is greater than a predetermined force, in the operation of the brake operation member in which the failure detection means detec

Abstract: A micro-nano fluid damper includes a sleeve, a piston assembly and a micro-nano fluid. The sleeve has an accommodating space. The piston assembly has a piston head and at least one piston rod. The piston assembly is movably disposed in the accommodating space. The piston rod extends out of the sleeve from a side of the piston head. The micro-nano fluid is filled between the sleeve and the piston assembly, and the micro-nano fluid flows in the accommodating space by the back-and-forth movement of the piston. When a shear strain rate of the micro-nano fluid is greater than 1s?1, an exponent of velocity of the micro-nano fluid damper is less than 1, and the micro-nano fluid has a shear thinning threshold and a shear thickening threshold.

Abstract: Embodiments of an isolator are provided, as are embodiments of a spacecraft isolation system employing a number of three parameter isolators. In one embodiment, the isolator includes an externally-pressurized damper assembly and a thermal compensator, which is located external to the externally-pressurized damper assembly. The damper assembly includes, in turn, a damper assembly housing and a first hydraulic chamber configured to be filled with a damping fluid. The first hydraulic chamber is located within the damper assembly housing and is fluidly coupled to the thermal compensator. A first bellows is disposed within the damper assembly housing and bounds an inner circumference of the first hydraulic chamber such that the first bellows is externally pressurized when the first hydraulic chamber is filled with the damping fluid.

Abstract: In one embodiment, a gas spring having a travel control includes positive and negative chambers and a valve mechanism that controls the fluid communication between the chambers. The valve mechanism includes a valve bore that while only moving a small amount, allows for large changes in gas spring travel length.

Abstract: A method in which at least one piezoceramic sensor, which converts every mechanical force to which it is subjected into an electrical signal and having a Curie temperature higher than 200° C., is solidarized directly onto the surface of a metal support element of a vehicle braking element, which during use faces a vehicle element to be braked. While in contact with such a surface, an electrical circuit is implemented that picks up and eventually processes the electrical signal, the electrical circuit being connected with a connector integrated with the metal support element. An electrically insulating layer sandwiches the at least one piezoceramic sensor and the electrical circuit, and a block of friction material with an underlying damping layer is formed upon the electrically insulating layer. After forming the block of friction material, the piezoceramic sensor is polarized by applying a predetermined potential difference thereto by means of the connector.

Abstract: A braking system for a vehicle is operative to apply a friction brake force to at least one wheel of the vehicle. The braking system includes a master cylinder is in fluid communication with a reservoir of brake fluid and in fluid communication with the hydraulic brake device. According to one aspect, the braking system includes an electric brake force generator which moves the brake fluid within the master cylinder to deliver brake fluid to the friction brake device in response to a first predetermined displacement of a brake pedal. The electric brake force generator includes a housing defining a boost chamber filled with brake fluid and in fluid communication with the reservoir of brake fluid and further includes a drive arrangement for creating pressure in the boost chamber.

Abstract: A damping valve includes a piston, a damping passage, a piston rod, a bypass, and a relief valve, and the bypass includes a valve hole extending in the axial direction of the piston rod and a horizontal hole opening from a side part of the piston rod and leading to the valve hole, and the relief valve includes an annular valve seat provided on the side of a pressure side chamber with respect to an opening of the horizontal hole, a valve body slidably inserted on the side of an extension side chamber with respect to the annular valve seat and partitioning a back pressure chamber in the valve hole, a bias spring biasing the valve body toward the annular valve seat, and a throttle communicating the back pressure chamber with the extension side chamber.

Abstract: A fluid-filled vibration damping device including a second orifice passage and a third orifice passage tuned to a lower frequency than the second orifice passage, and an actuator including an output portion facing openings of the second and third orifice passages on a side of an equilibrium chamber via a flexible film. The flexible film obstructs the openings of the second and third orifice passages when the output portion comes into contact against a partition member so that the third orifice passage is blocked while the second orifice passage is substantially placed in communication owing to a center recess of the output portion permitting deformation of the flexible film. Meanwhile, the flexible film is separated from the openings of the second and third orifice passages when the output portion is separated from the partition member so that the two orifice passages are placed in communication.

Abstract: A restraint device for being secured on a telescopic suspension comprising a first portion, which may be a fork band comprising a first restraining hook, a second portion comprising a body, a trigger, at least one magnetic member, and a second restraining hook, wherein the first restraining hook and the second restraining hook are configured to selectively engage one another to secure the suspension in a compressed position, and wherein the at least one magnetic member is configured to retract the second restraining hook when the device is disengaged to permit normal operation of the suspension.