Abstract: Various shaped abrasive particles are disclosed. Each shaped abrasive particle includes a body having at least one major surface and a side surface extending from the major surface.

Abstract: A basing cement composition is disclosed. The basing cement composition of the invention includes an insulating binder, an inert filler material, a solvent, and silicone ether. The silicone ether is included in the basing cement composition in an amount greater than 0, up to about 5 weight percent. Preferably, the silicone ether is added to the basing cement composition in solution form.

Abstract: A lamp assembly includes a sealed lamp envelope enclosing a filament, a lamp base affixed to the lamp envelope and including a connector, and an automatic light control circuit located in the lamp base and electrically connected between the connector and the filament. The light control circuit includes a photosensor for controlling the power delivered to the filament in response to a sensed ambient light level. Preferably, the lamp base includes a cup-shaped portion affixed to the connector, and the light control circuit is mounted in the cup-shaped portion on a circuit board. The photosensor is mounted in a hole in a sidewall of the cup-shaped portion. The lamp assembly can be installed and operated in a conventional lamp socket.

Abstract: A "3-lite" incandescent lamp structure is disclosed which is capable of being mounted in either a "base down" orientation or a "base up" orientation without damage to the internal glass button support assembly. A shield is provided adjacent to the glass button support assembly to minimize damage to the support assembly from the gaseous deposition products generated by the lamp filaments.

Abstract: An ignition system for an internal combustion engine having a flywheel coupled to a plurality of bipolar magnets and a camshaft coupled to a unipolar magnet. A bipolar Hall sensor is positioned adjacent the flywheel for detecting passage of the bipolar magnets and generating a square wave signal to provide camshaft position. A unipolar Hall sensor is positioned adjacent the camshaft for detecting the passage of the unipolar magnet and generating a square wave signal to provide a reference signal indicating a known position of one cylinder.

Abstract: A distributor (10) includes a magnetic ring (14) mounted on an intermediate shaft which is directly coupled to a camshaft (20). A sensor (54) has a known position with respect to the poles on the magnetic ring (14) and is mounted to a stationary portion of the engine (22).

Abstract: A method of assembling a distributor (10) includes integrally mounting a magnetizable ring (14) directly to a camshaft (20) and establishing magnetic poles on the ring (14) when the engine is in a known position. A sensor (54) has a known position with respect to the poles on ring (14) and is used to generate information about engine rotation.

Abstract: A lock-down assembly for a commutation rotor in a fixed mount high voltage ignition distributor. The assembly allows for angular adjustment of the rotor about its axis prior to lock-down in proper position with respect to a predetermined point on the fixedly mounted base and the corresponding timing position of the engine.

Abstract: A hollow tubular structure of a distributor rotor driveshaft having a relatively high coefficient of thermal expansion is mated with an axially aligned metal driving member having a relatively low coefficient of thermal expansion. The tubular structure contains an internal socket configuration which conforms with and surrounds the external surface of the metal driving member. Rotational driving forces are communicated from the metal member to the tubular structure throughout a wide range of temperatures due to a compression spring that surrounds a portion of the tubular socket to restrict its expansion.

Abstract: A rotor formed with an integral hold down spring for use in a high voltage distributor to maintain a predetermined height in the commutation cavity.

Abstract: A high voltage ignition distributor having a plurality of removable spark plug terminals which, when mounted on the distributor, extend from the outside to the commutation cavity inside the distributor.

Abstract: A labyrinth vent path is defined by the side walls of a mated cap and base of an ignition distributor. The vent path is biased open by a spring molded into the dielectric portion of the distributor rotor.

Abstract: A unitary structure is formed to function in a high voltage ignition distributor as a common high voltage conductor and a bearing mount for a rotor driveshaft.

Abstract: A mechanism molded into the base of a high voltage distributor for mating with a fixed post, wherein the mechanism mounts and retains the distributor in a fixed position on an engine housing.

Abstract: A lightweight distributor rotor driveshaft formed as a unitary structure. The unitary structure includes a socket member for engaging the rotationally driven element in the engine, at one end, and a mounting bearing surface configuration at the opposite end. The rotational bearing surface formed at the opposite end of the rotor driveshaft provides self-lubricating bearing surfaces which slide over fixed metallic surfaces within the distributor housing.

Abstract: A high voltage distributor is reduced significantly in size by utilizing a dielectric fluid medium having a high dielectric constant between adjacent spark plug contacts. The distributor includes a fluid-tight chamber which contains the fluid medium, a rotor, a common high voltage supply contact and a plurality of spark plug contacts concentrically disposed to provide a metal-to-metal conduction path with the rotor. The rotor defines an electrically conducting path between the common high voltage supply contact and sequentially selected spark plug contacts, and contains a magnetic element which is magnetically coupled to a corresponding magnet at one end of a rotationally driven shaft, located external to the fluid-tight chamber.