Abstract: A method of detecting a leak in a hydraulic trailer brake circuit of a trailer includes providing a controller, a base valve, a first sensor, a second sensor, a control valve having a solenoid, a reduction valve, a hydraulic fluid supply, a first brake output, and a second brake output. The method also includes supplying a first pressure to an inlet of the base valve and outputting a second pressure from an outlet of the base valve to the first brake output. The first pressure is detected by the first sensor and the second pressure is detected by the second sensor, and the detected first and second pressures are communicated to the controller. The difference between the first and second pressures are compared to a threshold, and a leak is detected in the hydraulic trailer brake circuit if the difference satisfies the threshold.

Abstract: A valve module is provided for enabling a vehicle to control an autonomous event of the vehicle. The valve module comprises a relay valve, a first solenoid valve, and a second solenoid valve. A first control pressure can be delivered through the first solenoid valve and applied to a control port of the relay valve. In one embodiment, a second control pressure can be delivered through the second solenoid valve and combined with the first control pressure. The combined first and second control pressures are applied to the control port of the relay valve. In another embodiment, a second control pressure can be delivered through the second solenoid valve only when no first control pressure is delivered through the first solenoid valve.

Abstract: A vehicle braking arrangement includes a braking plate connected to a vehicle by a link arm. The braking plate is movable from a rest position to a braking position where contact is made with the ground, and includes a sealing rim arranged to at least partially contact the ground such that an at least partly enclosed volume is formed. The vehicle braking arrangement includes an expandable chamber formed between a lower plate, at least one connecting side wall and an upper plate, which chamber is connectable to the volume. Upon activation, the chamber's volume is expanded by movement of the lower plate away from the upper plate. Then the pressure is lowered in the volume which results in that the braking plate is pressed against the ground. In this way, a retaining force is obtained.

Abstract: A wheel chocking assembly for a vehicle such as a truck where the wheel chocks are supported in respective cradles mounted for rotation on the truck's frame or chassis, and where the cradles are adapted to be moved between a first upwardly-facing inoperative position where each cradle supports its corresponding chock in an inoperative mode, and an operative positon where each cradle is rotated about 180° sufficient to lower its corresponding chock by a tether into chocking position under the influence of gravity. A control system is provided where transition from the aforementioned inoperative position to the operative position is remotely controlled by operation of the vehicle's parking brake.

Abstract: A valve includes at least one of an electrical port adapted to receive an electronic control signal and a pneumatic control port adapted to receive a pneumatic control signal. The valve also includes a pneumatic delivery port. The pneumatic delivery port is adapted to transmit a pneumatic fluid, based on the at least one of the received electronic control signal and the received pneumatic control signal, from a second independent source to control i) a second associated service brake and ii) delivery of the pneumatic fluid from a first independent source to control a first associated service brake.

Abstract: Gas spring end members dimensioned for securement between an associated flexible spring member and an associated damper housing has a longitudinal axis. The end member includes an end member wall extending between first and second ends. An end wall portion is oriented transverse to the longitudinal axis and a side wall portion extends axially from along the end wall portion to a distal edge. An end member recess is dimensioned to receive the associated damper housing. A securement device removably retains the end member in operative engagement with the associated damper housing. Gas spring and damper assemblies and suspension systems are also included.

Abstract: A baffle plate (41, partition member) is manufactured by being integrally formed of a single material including flexible or pliable NBR (nitrile rubber), and a projection (51) formed on an abutment surface (42B) of the baffle plate (41) is fitted into a recess (52) in a reduced-diameter portion (36) of an intermediate tube (20). Thus, when the intermediate tube (20) fitted with the baffle plate (41) is assembled into an outer tube, the sheet-shaped baffle plate (41) can be prevented from rotating about a connecting pipe (23), and it is possible to improve the productivity and assembleability of the shock absorber.

Abstract: Provided is an electric brake device that can achieve improved control accuracy without involving a cost increase. The electric brake device includes an electric motor, a brake rotor, a friction pad, a transmission mechanism, a braking force command section, a braking force estimation section, a motor rotation angle detector, and a controller. The motor rotation angle detector, which is used in a partial region of a braking force from a minimum braking force to a maximum braking force, has a higher resolution than a motor rotation angle that causes a braking force fluctuation equivalent to a minimum braking force resolution of the braking force estimation section. The controller includes a resolution interpolation section configured to interpolate, by using a motor rotation angle detected by the motor rotation angle detector, a minimum resolution of the braking force obtained by the braking force estimation section.

Abstract: A valve includes an electrical park valve configured to receive an electrical park signal and to allow hydraulic fluid to flow through a first electrically-controlled channel in response to the signal indicating a parking request, and a main valve configured to receive the hydraulic fluid from the first electrically-controlled channel and to allow the hydraulic fluid to flow to a braking actuator in response to receiving the hydraulic fluid. The valve also includes an electrical emergency control valve configured to allow the hydraulic fluid to flow through a first control channel in response to a request for emergency braking. The valve also includes an emergency enable valve configured to receive the hydraulic fluid from the first control channel and to allow the hydraulic fluid to flow to the braking actuator in response to receiving the hydraulic fluid from the electrical emergency control valve.

Abstract: Systems and methods are provided for restraining the movement of a wheeled transport apparatus using a restraining device. The restraining device may include an elongated frame component having an upstanding rear portion and a base portion. The base portion is configured to be secured to a floor surface. A loading member may be provided, located adjacent the elongated frame component. The loading member defines a ramp surface to guide a rotational movement of a wheel of the wheeled transport apparatus into a receiving space. In certain aspects, the elongated frame component comprises an angle iron defining a length and having a substantially uniform L-shaped cross-section. The device may further include a locking member pivotally coupled to the elongated frame component and configured to retainingly engage a structural component of the wheeled transport apparatus.

Abstract: A vibration dampening mount assembly includes a housing, resilient material, a sleeve and a restricting structure. The resilient material is fixedly attached to an interior surface of the housing and defines a first chamber and a second chamber. The sleeve is disposed within the housing and is centrally attached to the resilient material. The restricting structure between the first chamber and the second chamber includes a first portion attached to the housing and a second portion attached to the sleeve. In response to movement of the sleeve relative to the housing, the second portion of the restricting structure moves relative to the first portion. The first portion and the second portion of the restricting structure define a fluid passageway therebetween. The cross-sectional area of the fluid passageway changes in response to movement of the second portion relative to the first portion.

Abstract: An electric brake system includes a hydraulic pressure supply device including a first pressure chamber provided at one side of a piston movably accommodated inside a cylinder block, and a second pressure chamber provided at other side of the piston, a first hydraulic flow path communicating with the first pressure chamber, second and third hydraulic flow paths branching from the first hydraulic flow path, a fourth hydraulic flow path communicating with the second pressure chamber, a fifth hydraulic flow path branching from the fourth hydraulic flow path and connected to the second hydraulic flow path, a sixth hydraulic flow path branching from the fourth hydraulic flow path and connected to the third hydraulic flow path, and first and second hydraulic circuit including flow paths branching from the second or third hydraulic flow path and connected to wheel cylinders.

Abstract: A coil spring for a vehicle suspension according to one embodiment includes a lower end turn portion, an upper end turn portion, and a cylindrical effective portion between the lower end turn portion and the upper end turn portion. In at least one of the upper end turn portion and the lower end turn portion, a taper portion having a taper length and a taper thickness for controlling a force line of the coil spring is formed. The taper portion is formed such that the thickness is reduced in a tapered way from a thickness varying portion provided in the middle of the end turn portion toward a distal end of the wire along its length. The thickness varying portion is arranged at a position close to the force line.

Abstract: An electromechanical brake includes a piston installed in a caliper housing so as to be movable forward and backward in an axial direction, and moves forward in the axial direction at the time of performing a braking operation so as to press a friction pad provided to clamp a disc; an actuator which provides rotational force for moving the piston; a spindle which is thread-coupled to the piston, and rotates by rotational force transmitted from the actuator to move the piston forward and backward in the axial direction; and a guide member which is provided to be integrally fixed to the caliper housing and coupled to the piston so as to restrict rotation of the piston and guide forward and backward axial movement of the piston, in which the guide member has a support portion which is coupled to the spindle and supports the spindle in the axial direction.

Abstract: An actuating unit for a brake system, comprises a pedal connection element that charges a booster piston with an actuating force. An elastically deformable reaction disk, absorbs the actuating and boosting forces of the booster and releases the sum of said forces to a working piston. An electrically controllable pressure supply device outputs pressure which acts upon the booster piston. The actuating unit further comprises an extension arm for detecting the differential path between the pedal connection element and the booster piston and a sensor device that detects the differential path. An electronic control unit receives the signals from the sensor device and uses said signals for controlling the pressure supply device. Differential path information is transported by the extension arm to a location near the sensor device that is radially and axially offset by the reaction disk.

Abstract: An overspeed braking mechanism for a stairlift includes: a main shaft driven by a motor to rotate; a claw member connecting with the main shaft to thereby rotate synchronously with the main shaft and having a tooth; a cam member connecting with the claw member and having an abutting portion spaced apart from the tooth of the claw member radially by a predetermined angle; a driven unit having a cam contact portion, wherein the abutting portion of the cam member abuts against the cam contact portion to cause the driven unit to swing, whereas a pawl portion of a claw contact member engages with the tooth of the claw member and has a switch contact portion; and a micro switch adapted to be touched by the switch contact portion, controlling the motor to drive the main shaft to rotate.

Abstract: A drum brake dust shield is provided for a vehicle braking system having a drum brake assembly. The dust shield comprises a first semicircular portion lying in a generally flat plane, and a second semicircular portion lying in the same plane as the first portion to form an annular disc. A dividing slit is defined between the first and second portions. The dust shield further comprises a hinge portion interconnecting the first and second portions. The hinge portion has a stress-relief slit that transversely intersects the dividing slit such that mechanical stresses between the first and second portions are distributed and dispersed over a relatively larger surface area when the first and second portions are spread apart along the dividing slit in opposite directions relative to each other to install the dust shield on the drum brake assembly.

Abstract: A brake clip adapted for use in a disc brake assembly comprises a brake clip configured to be disposed between an anchor bracket and at least one brake pad of the disc brake assembly. The brake clip has at least one tab extending therefrom which is configured to initially contact and prevent the at least one brake pad from falling free prior to installation of the disc brake assembly on a vehicle.

Abstract: An engaging projection formed on a back surface of a pressure plate is inserted into an engaging hole formed in an outside shim plate. A flat surface parts of the engaging projection constituting a side surface thereof are opposed to a linear parts of the engaging hole constituting an inner peripheral edge thereof. When the outside shim plate exists at a neutral position with respect to the pressure plate, the flat surface parts and linear parts are slightly inclined with respect to each other. A rotation of the outside shim plate about an axis of a piston based on a rotation force applied from a leading end face of the piston to the outside shim plate is regulated by line contact between the flat surface parts and linear parts.

Abstract: An apparatus and method for a piston head assembly for an R/C car shock absorber provides for differing flow rates through the piston depending on whether the piston is presently in rebound or compression movement. A piston head may be constructed with a plurality of separate recesses further having at least first and second one way valve holes and a plurality of two way valve holes surrounding the central recess. In one embodiment, two sealing members fit within two separate recesses whereby the sealing member keeps the first and second one way valve holes generally closed. When fluid flow contacts the sealing member during the rebound stroke, fluid flows through the first and second one way valve holes moves the seal member to the open position thereby providing more fluid flow and a quicker rebound damping response.