Abstract: A pneumatic booster (1) having casing (3) divided by a movable partition (3) into first (3a) and a second (3b) working chambers. The movable partition (4) being urged by a pressure differential derived from a first fluid pressure in the first working chamber (3a) and a second fluid pressure in the second working chamber (3b). The second fluid pressure is communicated to the second working chamber (3b) through the actuation of a shutter (70) by means of a plunger (8). The shutter (70) has freedom of movement with respect to the plunger (8) while being elastically urges against the plunger (8). The shutter (70) is connected to a mass (15) which is set in motion by a movement of the plunger (8). The mass (15) thereafter acts on and moves the shutter (70) away from the plunger (8) to increase the flow of the second fluid pressure to the second chamber (3b).

Abstract: A pressure-regulating solenoid valve (100) for a hydraulic circuit for a braking system of a motor vehicle having wheel antilock structure. The hydraulic circuit has at least one pressurized fluid generator (300) connected to a pressure receiver (200) and to a reservoir (400) for retaining fluid at a low pressure. The solenoid valve (100) has an electrical coil (10) which interacts with two pole pieces (12,14), a sleeve structure (28,30) forming a magnetic body (26) which moves under the effect of an actuation force (O) generated by a magnetic field created by the electrical coil (10) and a distributor element (34). The distributor element (34) interacts with the sleeve structure (28,30) in order to command communication between a duct (98) connected to the pressure receiver (200) and a duct (94) connected to the reservoir (400) or a duct (96) connected to the pressure receiver (200).

Abstract: A pneumatic brake booster for a motor vehicle having a rigid casing (1) with a first shell (10) which points toward the front of the vehicle and a second shell (11) which points toward the rear of the vehicle. At least one through bolt (5) fastened to the front shell (10) and rear shell (11) by respective cohesive forces which joins the front shell (10) to the rear shell (11) in an axial direction by a compressive force which tends to pull the front shell (10) toward the rear shell (11). The cohesive force between the through bolt (5) and the front shell (10) wholly consists of an elastic force exerted by the rigid casing (1) on the through bolt (5) in reaction to the compressive force exerted on the front shell (10) and rear shell (11) by the through bolt (5). The through bolt (5) has a threaded end (50) which passes through the front shell (10).

Abstract: An automatic adjustment strut for a drum brake which is mounted in the vicinity of actuating member and located between a first end of first and second shoes. The first and second shoes are lined with friction pads. The strut has a body with first and second ends which bear on the first and second shoes and extension arrangement for automatically extending the body as a function of ear of the friction pads. The extension arrangement is formed by a screw-nut system and controlled by a pawl which urges toothing secured to a member of a screw-nut system. The pawl is carried by an elastic strip secured to the body of the strut. The elastic strip is separated from the body of the strut when the drum brake is in the position of rest. A lever mechanism tilts to allow the elastic strip and the body of the strut to move toward each other when the shoes are urged apart through actuating member. The lever mechanism has a first arm and a second arm with the first arm bearing on a nut in the screw-nut system.

Abstract: A disk brake for use in a vehicle. The disk brake has a caliper (1) which straddles a disk (2) and a carrier (3) which is fixed to a stationary member on the vehicle. A cylinder (4) secured to the caliper (1) has a bore (4a) which is closed by a piston (50). The carrier (3) has at least one guide pin (6,7) which extends into a blind bore (8,9) in the caliper (1). On communication of hydraulic fluid to bore (4a) the piston (5) and caliper (1) respectively move friction pads (10,11) into engagement with the disk (2) to effect a brake application. The guide pin (6,7) and blind bore (8,9) are defined with respect to the cylinder (4) such on movement of the cylinder by the hydraulic fluid to effect the brake application, air is compressed between the end (6a,7a) of the guide pin (6,7) and the bottom (8p,9p) of the blind bore (8,9). On termination of the brake application, the compressed air expands to move the caliper (1) to a rest position.

Abstract: A pneumatic-controlled device for a vacuum brake booster having a hollow piston which retains a tubular shut-off member. The tubular shut-off member interacts with a stationary seat and a movable seat to define a chamber within the hollow piston when the movable seat is in an actuation position. An orifice formed in the tubular shut-off member places the chamber in communication with a passage defined between the stationary and movable seats to reduce hysteresis experienced by movement of the movable seat.

Abstract: A master cylinder comprising a body (4) pierced with a bore (5) closed on a first side by an end (6) and on a second side by a piston (7). The piston (7) slides in the bore (5) to delimit a pressure chamber (8). The pressure chamber (8) is connected by a pressure pipe (12) to at least one brake motor through an outlet (11) therein. The chamber (8) and the pressure pipe (12) together delimiting a working volume filled with a hydraulic fluid. The working volume is partially delimited by a leak-off device (19) which is responsive to an impact to selectively allow hydraulic fluid to leak off toward the outside of the working volume.

Abstract: A master cylinder having primary (2) and secondary (3) pistons mounted in tandem within a bore (100) of a body (1). The bore (100) being closed by a detachable bottom such that first (7a) and second (7b) springs act on the primary (2) and secondary (3) pistons to define first (6a) and second (6b) hydraulic chambers. The first spring (7a) being contained within a cage. The cage being comprised of a rigid cup (8) and a spacer (10) which passes through the secondary, piston (3). The spacer (10) being accessible from the secondary pressure chamber (6b) to enable adjustment of the length (L) of the cage by relative displacement of the spacer (10) and the secondary piston (3).

Abstract: A brake pad (10) having a mechanical joint formed between a friction member (22) and a metal backing plate (12) by a plurality of rivets (30,30' . . . 30.sup.n). Each rivet (30) has a head (36) and an end (37) with the head (36) engaging the friction member (22) and the end (37) engaging the backing plate (12). During assembly of each rivet (30) with the backing plate (22), a force is applied to the head (36) causing the end (37) to flow in a groove (38) in a die (16) and form a flattened surface. The amount of the force applied to head (36) is limited to create a clamping force between the head and backing plate which holds the friction member (22) against the backing plate (12) and yet noise developed through vibration during a brake application is attenuated as the friction member (22) and metal backing plate (12) vibrate at different frequencies.

Abstract: A boosted braking device for a motor vehicle having a master cylinder (200) and a pneumatic booster (100). The pneumatic booster (100) is capable of being operated by an operating rod (28) controlling the opening of a valve (26) in order to actuate a main hydraulic piston (34) in the master cylinder (200). The booster (100) has a rigid casing (10) divided in a leaktight fashion into first (12) and second (14) chambers by a moving partition (16) capable of driving a pneumatic piston (22) which can move relative to the casing (10). The main hydraulic piston (34) includes a hollow moving cylinder (38) having a secondary piston (40) which slides in a leaktight fashion in the interior thereof.

Abstract: A deck cover for a trailer having first and second frames which are joined to first and second brackets fixed to a deck to form a rectangular member. The first and second frames have center members which are located in pockets in a tarp. Fasteners attached to the deck engage the first and second frame to hold the first and second frames in a substantially horizontal position to form a canopy over the deck. A center frame is attached to the first and second brackets, straps connected to the first and second frames extend to the deck and hold the first and second frames with the tarp attached thereto in a vertical position to provide for easy access to place cargo on the deck.

Abstract: This boosted braking device comprises a pneumatic brake booster (1) associated with a master cylinder (2) and provided with an automatic control solenoid valve (26), this booster operating according to a mixed reaction principle and comprising a movable pneumatic piston (5) carrying a control valve (7) actuated by a rod (8), as well as a partition (4) which can be moved under the effect of a pressure difference, this movable wall (4) being mounted slidingly with respect to the pneumatic piston (5). The device of the invention makes it possible, with very few elements, to provide automatic braking without disturbing the normal operation of the booster.

Abstract: A rotary pump having a stator (1) pierced with a housing (11) delimited by a cylindrical sidewall (110). A cylindrical rotor (2) located tangentially inside of the housing (11) off-center to an axis (X). The cylindrical rotor (2) is driven in rotation about the axis (X). A vane which diametrally passes through the rotor (2) has first and second opposite edges (31,32). The first and second opposite edges (31,32) bear against the sidewall (110) and are separated from one another by a distance subjected to variations during rotation of the rotor (2). The vane (3) is made of a thin sheet of material which offers elastic resistance to bending. The thin sheet has an undulation part (33,34) which absorbs such variations in distance experienced by the first and second opposite edges (31,32) of the vane (3).

Abstract: A back-up power assisted braking system substitutes an intermittently actuated secondary source of pressurized hydraulic fluid such as a traction control/anti-lock pump and motor (41) for the normal braking power assist upon the detection of a failure in the primary power assisted braking system. A failure may be detected in responsive to sensing simultaneous brake pedal (23) displacement and a lack of fluid flow for providing an abnormality signal. Also, a failure may be detected by sensing a predetermined difference between the commanded braking force (45) and the actual braking forces (38, 49). There is a pressure transducer (45) which provides an indication of brake pedal commanded braking force and a hydraulic circuit (43, 53 or 55, 51) interconnecting the secondary source outlet, the individual wheel brake actuators (14) and secondary source inlet.

Abstract: A parking brake assembly for connecting a cable to a lever. The lever has a generally flat base member pivotally mounted on the second brake shoe with a first end connected to the first brake shoe and a second end joined to a brake cable. The cable is located in a helical guide spring retained in a spring support which extends from the base member. A front face on the ramp is initially engaged by a tip of the cable while the slot forms a guide to allow an input force to move the tip over a lip on the end of the second tine. Once the tip has moved past the second tine, the cable tries to straighten out to eliminate any flexure induced by moving up the ramp by snapping into the slot and become aligned with the helical spring. A force applied to the cable which pulls the tip into engagement with a rear face on the ramp to complete the connection between the cable and lever. The projection assures that the cable remains located in the slot no matter how far the tip moves past the lip on the second tine.

Abstract: A swing having a stationary support member to which is pivotally attached to first and second arms. The first and second arms are in turn pivotally attached by connectors on side wings that extend from a base member. The base member has an arcuate surface that extends from a first end to a second end with the side wings extending on a tangent from the second end for a fixed distance to a terminus point. The center of gravity of the attached base member is selected such that the base member is in an approximate horizontal plane with the first and second arms in a rest position. A person mounts the base member to define a prone position with their hands on a handle adjacent the first end and feet located on a support attached to the terminus point of the side wings. As the person propels the base member in an arc about a first pivot of the first and second arms and stationary support, the base member pivots rotates in a counter manner on yokes which attached the side wings.

Abstract: The hydraulic and electric powered parking brake system (10) comprises a redundant or simultaneous operation of the system (10) to meet Federal Safety Standards. A dash mounted control knob (24) operates a hydraulic brake application mechanism (20) which transmits a hydraulic pressure to a hydraulically operated pilot piston (70). The control knob (24) also operates a switch (30) to send an electrical signal to an electrical control unit (100) which sends an electrical signal to a solenoid (80). The solenoid (80) and hydraulic pilot piston (70) can be operated, independently or simultaneously, to displace a control valve (60) located within a parking actuator assembly (114) and effect the release of hydraulic pressure from spring apply and hydraulic release actuators (16, 90) connected to vehicle brakes (18). The hydraulic fluid is released past the control valve (60) and to a reservoir (52).

Abstract: A device for attaching a disk-brake pad (2) to a piston (1) in a brake. The piston (1) has an opened internal volume (100) bordered by a chamfer (101) and exhibiting an internal peripherial widening (102). The device includes a passive fastening component (5) fastened to a backing (20) having an edge (50) detached from the backing (20) to define a gap (51) and an active fastening component (6) which is mounted to slide in the piston (1). The device is fastened to the pad (2) by first clips (61) inserted in the gap (51) and to the piston by second clips (62) inserted in the peripherial widening (102).

Abstract: A regulator (1) having a casing (10) with at least one bore (11) therein. A piston (12) slidably located within the bore (11) to delimit first (13) and second (14) chambers. The first (13) and second (14) chambers being separated from one another by a valve (15) carried on the piston (12) and actuated by a push rod (16). Valve (15) include first (151) and second (152) balls which have different diameters and are mounted in line with respect to corresponding first (155) and second (156) seats. First (153) and second (154) springs act on and urge the first (151) and second (152) balls toward the first (155) and second (156) seats.

Abstract: A pneumatic servo for assisting braking. The servo has a casing with an axis of symmetry which is divided in leaktight fashion by a movable wall structure into a front chamber and a rear chamber. The front chamber is permanently connected to a source of partial vacuum while the rear chamber is connected selectively to the front chamber and to air in the surrounding environment by a three-way valve. A sleeve divided an annular bore located in a projection that extends through the movable wall through the casing into a static volume and a concentric annular volume. The sleeve engages the projection to position the three-way valve in the bore. A return spring located in the static volume engages the control rod while an end plug engages the sleeve to seal the static volume from the surrounding environment. The annular volume being is respectively connected by first and second openings to the surrounding environment and bore.