Abstract: A wrist pin and method of reducing wear between members thereof, a piston, a connecting rod, and methods of construction thereof are provided. The wrist pin has a first portion extending between opposite ends configured for receipt in piston pin bores and a second portion extending between opposite ends configured for receipt in the pin bores. The second portion is configured for relative movement with the first portion. The piston includes a piston body having axially aligned pin bores, wherein at least one of the pin bores has a feature to prevent relative rotation of a wrist pin member. The connecting rod includes a connecting rod body having small end bore. The small end bore has a contour to allow relative rotation of a first wrist pin member therein and a feature to prevent relative rotation of a second wrist pin member therein.

Abstract: A multi-layer gasket including first and second functional layers, each having an opening. Each of the functional layers includes a compression bead, and the compression beads contact and seal against one another when the gasket is compressed between a cylinder head and an engine block. At least one of the functional layers includes a stopper disposed between the compression bead and the opening. The stopper has a gear-like shape including a plurality of circumferentially spaced teeth. Each tooth extends upwardly from a plane by a distance which is less than the combined height of the compression beads. When the gasket is compressed between the cylinder head and engine block, the stopper ensures that the compression beads remain elastically biased against one another and maintain a gas-tight seal.

Abstract: The multi-layer gasket assembly includes a plurality of metal gasket layers which have at least one set of axially aligned openings. The plurality of gasket layers includes at least two functional layers which are arranged in a stacked relationship with one another. Each functional layer has at least one full embossment bead that is spaced radially from and surrounds the at least one opening. The functional layers are also arranged such that the full embossment beads are in a nested relationship with one another. At least one stopper is positioned adjacent the nested full embossment beads for preventing full flattening of the full embossment beads.

Abstract: A gas silencing system for controlled sound attenuation of the exhaust gas in a motor vehicle comprises a sound attenuation muffler for exhaust gases. The system also includes means providing a bypass passage for gas to flow around at least part of the muffler. Bypass control valve is provided to allow selective regulation of the flow of exhaust through the muffler and the pass-pipe. The bypass control valve is responsive to a modulated pressure signal controlled by the driver of the vehicle. The invention also includes circuits for visually indicating the amount of bypass flow and the sound level of gas leaving the system.

Abstract: A sound attenuating muffler for motor vehicle exhaust systems contains a fibrous glass cartridge with a binder-hardened outer shell surrounding a soft fibrous core through which a gas flow tube extends.

Abstract: An automotive muffler has sound attenuating means in the form of one or more frame subassemblies which are formed of two identical transverse partitions and two identical longitudinal partitions secured at opposite ends to the transverse partitions and acting with them and the muffler housing to provide a retroverted exhaust gas flow path.

Abstract: An automotive muffler has an end header with two bushing receiving openings and is used with a gas flow bushing assembly comprising a bushing to fit in one of the openings and a flange to clamp the bushing to the header and cover the other opening in the header.

Abstract: An exhaust silencing device comprises an outer tube that is pinched down to form a series of annular chambers around a coaxial inner gas flow tube and has openings connecting the chambers to provide for some secondary gas flow parallel to primary flow through the tube. The device and is shown in conjunction with a catalytic converter to provide an exhaust system that has a sporty sound.

Abstract: A retroverted flow type exhaust gas muffler has curved flow directing and guiding plates mounted on end headers to facilitate flow reversal.

Abstract: The invention comprises a preservative composition for metal surfaces comprising at least one substance known to function to protect metal surfaces against corrosion and a jojoba oil compound in an amount sufficient to form a matrix entrapping and maintaining said protective substance on said metal surfaces, and the method of protecting metal surfaces against corrosion utilizing the composition.

Abstract: An auxiliary air injector assembly comprises an injector fitting that is held in place in a hole in an exhaust pipe by the end of an air flow tube that is clamped against it by a saddle clamp extending around the exhaust pipe.

Abstract: An automatic locking gear is adapted to drivingly connect a drive axle and wheel hub automatically in response to application of torque to the drive axle which has a stationary housing in which said drive axle is journaled, a drive gear keyed for rotation with the drive axle while being slidable in an axial direction independently of the drive axle, and a driven gear is keyed for rotation with the wheel hub while being slidable in an axial direction independently of the wheel hub. The locking member is mounted on the stationary housing, and the cam follower mounted on the drive gear.

Abstract: S-shaped passageways are provided for reinjecting fluid from the discharge of a centrifugal pump to the impeller inlet of the pump, in order to prevent recirculation and the cavitation damage that results from recirculation. The S-shaped passageways impart a rotation to the reinjected fluid which is opposite to the direction of rotation of the impeller. The S-shaped passageways have intake openings near the discharge tips of the impeller which are adapted to receive fluid so that the momentum of the fluid, as it is expelled from the impeller, will carry the fluid directly into the intake of the S-shaped passageways. The S-shaped passageways are shaped to redirect the flow of the fluid to be reinjected so that the fluid exits the S-shaped passageways at the inlet of the impeller in a direction which is at a generally small angle of attack with respect to the impeller vanes. The S-shaped passageways are arranged in side-by-side relation to form an annular reinjection port.

Abstract: A connection flange for tubular members is formed as a separate member having a sealing surface formed on the connection flange for sealingly engaging a complementary mating surface, a formed annulus for receiving an end of a tubular member and a radially extending web having openings to enable threaded fasteners to force the flange sealing surface into sealing engagement with the complementary mating surface. A tubular member is sealingly affixed to the formed annulus by welding. The flange is formed of a relatively thicker material than the tubular member to which it is affixed to provide material and weight savings by enabling the tubular member to be formed of a relatively thin, light weight material.

Abstract: A compressor unloader system and method is disclosed, comprising a pneumatically controlled one-way valve member for controlling communication between an unloader chamber and a compression chamber of a compressor.The one-way valve member has one surface exposed to the pressure of the unloader chamber. To close it a control mechanism is actuated to present a lower pressure to an opposing second surface, interior of the valve member, creating a pressure differential to urge the one-way valve member toward a closed position.Temporary excesses of compression chamber pressures relative to unloader chamber pressures may bump the valve open to charge the unloader chamber with essentially maximum compression chamber pressure, thereby neutralizing the effect of the unloader chamber and fully loading the compressor.The one-way valve member is biased toward an open position.

Abstract: A vehicle wheel assembly of the live spindle type is rendered driven or free wheeling by a torque responsive hub clutch. The hub clutch operates in response to the presence or absence of relative rotary motion between a driveable axle and a passive or stationary member in the wheel assembly.

Abstract: A tubular exhaust gas manifold for an automotive internal combustion engine comprises pipes with flanges for bolting to the side of the engine to separately receive exhaust gas from individual cylinders, the other ends of the pipes being bunched together and welded to a collector that provides a common mixing and outlet chamber for the gases and has a flange for connection to an exhaust pipe. An air feed means is mounted on the pipes and it takes the form of an air log supported on the pipes by means of the air runner tubes that deliver air separately to the individual pipes.

Abstract: An actuator ball movement coordinator and cam member for a torque responsive hub clutch of the ball and cam type serves to assure coordinated movement of a plurality of actuator balls and also cams the balls into positions which cause actuation of the clutch.

Abstract: An automotive type internal combustion engine exhaust muffler has a welded butt joint consisting of the ends of a pipe bushing, a lockseam louver tube, and a partition neck into which the tube is pressed, the welded joint preferably being of a structure produced by the magnet arc process.

Abstract: An assembly maintenance tube maintains a live spindle mounted within a bore of a vehicle mounting component. The maintenance tube has a central aperture for receiving in a spaced relationship a drivable axle. The axle is drivingly connected to the live spindle in a manner which allows axial movement of the axle relative to the spindle to relieve stress in the drive train which drives the axle.