Abstract: A clamping bracket arrangement is provided which tightly grips the mounting boss of a wheel cylinder and the axle housing to which the brake assembly of which the wheel cylinder is a part is mounted, preventing movement of the wheel cylinder relative to the axle housing. The bracket arrangement may be quickly and easily installed in field service without the need for removing any parts of the brake assembly.

Abstract: A booster assembly is attached to a dash panel by a slotted hinge arrangement at the top of the booster mounting bracket and bolts in apertures at the bottom. The push rod is connected to the brake pedal in such a manner that the entire mounting and connection operation may be accomplished from the forward side of the dash.

Abstract: A simplified pushrod to brake pedal actuating arm attachment uses a spring clip held on the pushrod with several finger retainers. A pair of spring clip legs projecting inward near the pushrod eye ride on a grooved pin which is attached to the brake pedal. The outer ends of the spring clip legs pop into a groove and retain the clip and the pushrod eye in position on the actuating arm pin so that forces may be transmitted between the actuating arm and the pushrod through the pin.

Abstract: A periscopic lens in a lamp assembly in which parallel light rays are twice reflected and pass through optical surfaces which control the light distribution pattern beyond the lamp assembly. The light rays enter the lens and emerge only from alternate lens facet surfaces, with the surfaces or facets alternating therebetween being so arranged as to present the same color as that of adjoining vehicle body panels to visually merge the lamp assembly with the coloration of the body panels and present a continuous appearance while the lamp assembly is not energized. At the same time it permits the lamp assembly to be seen as needed when it is energized. Optical surfaces are provided which establish a desired light distribution pattern which may be other than diffusion beyond a light ray focal point.

Abstract: A vehicle brake and wheel anti-lock control system in which an electronically controlled actuator normally provides brake pressure for the vehicle wheel brakes and also acts as a modulator to vary the brake actuating pressures for wheel anti-lock control. The actuator is so arranged that a master cylinder may be used to provide actuating pressure to the wheel brakes, the pressure passing through the actuator pressurizing chamber, if for any reason the actuator does not perform as needed to provide brake actuating pressure to stop the vehicle.

Abstract: A vacuum check valve member has a lip arrangement, which provides one sealing portion, and an inner reinforced second sealing portion, the valve member, and particularly the valve lip, acting to tend to pull itself closed with minimal flow across valve member in the valve closing direction. The inner sealing portion bottoms out at high differential pressures and is reinforced by a rigid valve body so that the valve member does not rely on the lip alone for full closure. The lip is flexible throughout the normal operating temperature range likely to be encountered, and upon opening when any ice crystals are formed thereon will flex and break up such ice crystals as the valve member is opening, preventing the valve member from sticking under extremely cold weather conditions. The valve operates without having a valve spring continually urging the valve member toward engagement with the valve seat.

Abstract: Various buoyant valve arrangements are utilized to prevent quick take-up pressure from entering the master cylinder reservoir chamber until the quick take-up pressure reaches the desired value. A resiliently biased check valve is provided which opens at a predetermined quick take-up pressure to limit the amount of quick take-up pressure generated and then vents excess brake fluid from the quick take-up chamber into the reservoir chamber. The check valve may be resiliently biased by a spring or by elastic tension in an O-ring valve member.

Abstract: Various buoyant valve arrangements are utilized to prevent quick take-up pressure from entering the master cylinder reservoir chamber until the quick take-up pressure reaches the desired value. A resiliently biased check valve is provided which opens at a predetermined quick take-up pressure to limit the amount of quick take-up pressure generated and then vents excess brake fluid from the quick take-up chamber into the reservoir chamber. The check valve may be resiliently biased by a spring or by elastic tension in an O-ring valve member.

Abstract: A vacuum check valve assembly having an axially guided poppet valve and a minimal restriction to air flow. The poppet valve has a seal made of a fluoro-silicone rubber which has excellent non-sticking and non-leaking characteristics over a wide temperature range. The valve assembly may be combined with a fuel vapor adsorbent canister.

Abstract: A vehicle engine throttle and brake hand control mechanism having a hand operated input lever movable in one plane to drive a push-pull cable output member axially to control movements of the engine throttle while permitting unemcumbered actuation of the engine throttle by the accelerator pedal, and movable in another plane perpendicular to the first plane to independently drive a brake actuating push rod to control the vehicle brakes, the input lever also being movable to concurrently control the engine throttle and the vehicle brakes.

Abstract: A one piece spring clip is positioned on a headed brake shoe hold-down pin so that the spring clip is compressed with a camming action until the clip reaches an over-center condition. Further installing movement of the spring clip permits the spring to expand and lock itself in the installed position. The spring has a primary spring section absorbing normal compression loads and secondary spring sections resisting excessive compression loads.

Abstract: The variable pedal ratio brake actuating mechanism has a first lever pivotally mounted on an arcuately movable brake pedal arm. The lever is guided pivotally by a pivot control lever which pivots about a fixed point at one end and is connected at its other end to a first pivot on the first lever spaced from the first lever pivotal mount. An output member is pivotally connected to a second pivot on the first lever spaced from the first lever pivot mount and first pivot. The first lever is moved translatorily and also arcuately about its pivotal mount as the brake pedal arm moves in the brake actuating direction to change the effective pedal ratio.

Abstract: A vehicle door is mounted to move laterally outward on parallel pivoting support arms engaging the door and the vehicle by way of rollers and tracks. The body track is parallel to the vehicle axis and the door. The door is slidably moved rearwardly and is provided with auxiliary support by a retractable and extendible auxiliary support arm moved to the support position so that the rollers enter a track on the door.

Abstract: A brake shoe has a noise insulator sheet secured to the shoe back and engaged by the piston annular end or a caliper leg. This generates one or more high pressure areas which may cause the insulation layer to buckle and separate from the shoe. By providing slots or lances through the insulation layer immediately adjacent the high pressure areas, a discontinuity is provided which prevents such buckling and separation.

Abstract: The filter assembly removes minute soot particles from diesel engine oil during service. It may be used to remove other minute particles from various oils. A charged metal screen, with a mesh size preferably in the range of 2 to 4 holes per linear inch, causes attraction of the minute soot particles. The electric potential causes the particles coagulate to form larger masses which may be filtered by an electrically non-conductive filtering element. Particles also collect on the mesh surface. A D.C electric potential is applied to the screen to create an average electric potential of about 250 or more V/mm between the screen and the grounded electrode.

Abstract: A planar body spring attaches the inboard shoe and lining assembly to the piston of a disc brake caliper. The spring also serves as a shield for the piston boot seal.

Abstract: A system used in conjunction with a hybrid flywheel drive. The hydraulic service brake system is conventional. The continuously variable transmission, flywheel, and control system for hybrid operation is super-imposed on the hydraulic system. A pressure transducer added to the master cylinder provides a voltage control signal. A solenoid valve added to the hydraulic circuit for the front service brakes, activated by the hybrid control system, may be closed during regenerative braking to trap the front hydraulic brake pressure, thereby enhancing energy recovery by regeneration. The flywheel clutch is closed to begin regeneration.

Abstract: An air brake system for a truck in which various control valves controlling air supply to air sub-systems, parking and trailer brakes, and various brake system condition signal generators are mounted on a common manifold positioned remotely from the truck engine compartment and instrument panel, removing them from the instrument panel area and improving the plumbing arrangements for installation, diagnostics and servicing while clearing instrument panel space for other controls and devices which need the benign environment such as that in the truck cab provided for the truck driver. The system components may be used as needed for a straight truck or one composed of a tractor and trailer combination, or on a truck tractor adapted to tow a trailer.

Abstract: Two separate hydraulic master cylinders are connected with pressure lines to the front and rear brake cylinders. These two master cylinders are mechanically connected together by an articulating balance bar, all of which is mounted on a slidable mounting bracket. The mounting bracket is slidably movable by a reversible electric motor driving a worm gear that is connected to the mounting bracket. The relative position of the mounting bracket on its mounting plate in relation to the input point of a push rod determines the proportioning ratio of the two master cylinders. The assembly may be moved to obtain any proportioning ratio from 100% front brake to 100% rear braking.

Abstract: A brake control system in which the master cylinder has two pressurizing chambers for each brake circuit. Three brake circuits are disclosed in detail. One piston of each set of pressurizing chambers is directly applied by brake pedal force. The other piston of each set receives brake pedal force through resilient means, with additional force supplied by suitable servomotors. The servomotors are individually controlled to provide power-assist when appropriate, or to decrease the forces supplied by them to control wheel slip or wheel spin.