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| Number | Title | Issue Date |
| 5164995 | Signature analysis apparatus A method and apparatus for developing a digital signal that represents the profile of a movable part such as a bolt. The part is moved by a part carrier between a source of radiant energy and a sensor and the sensor develops a voltage that is a function o... | 11/17/1992 |
| 5135538 | Electromagnetically controlled heart valve A unidirectional flow heart valve includes a passageway having an inlet side and an outlet side. A disk occluder is disposed within the passageway. The disk occluder has a closed position wherein the disk occluder occludes fluid flow through the passagewa... | 08/04/1992 |
| 5121021 | Frame and magnet assembly for a dynamoelectric machine A frame and permanent magnet assembly for a dynamoelectric machine where the frame carries a plurality of permanent magnets. The frame is formed of iron powder particles that are bound together by a thermoplastic material. In the manufacture of the assemb... | 06/09/1992 |
| 5097109 | Insulated aluminum weld fixture and a method of making same A spot welding fixture for holding worpieces in correct orientation has a water cooled aluminum body processed to have an aluminum oxide coating. The coating electrically insulates the body but provides good thermal conductivity so that a fixed electrode ... | 03/17/1992 |
| 5015982 | Ignition coil An ignition coil for developing spark plug firing voltages. The magnetic current for the coil comprises an axially extending core that joins axially spaced annular parts. The core and parts can be formed of iron particles in a binder of electrical insulat... | 05/14/1991 |
| 5004577 | Frame and magnet assembly for a dynamoelectric machine A frame and permanent magnet assembly for a dynamoelectric machine where the frame carries a plurality of permanent magnets. The frame is formed of iron powder particles that are bound together by a thermoplastic material. In the manufacture of the assemb... | 04/02/1991 |
| 4992691 | Slip ring arrangements A slip ring arrangement for feeding electrical current to, or receiving electrical current from, coil windings which are mounted on a rotatable shaft for rotation therewith, the slip ring arrangement comprising a first slip ring of electrically conducting... | 02/12/1991 |
| 4990846 | Temperature compensated voltage reference circuit A reference voltage developing circuit that develops a multiple slope reference voltage that is a function of temperature. The circuit has a plurality of base-emitter multipliers each of which includes a transistor and each of which develops an output vol... | 02/05/1991 |
| 4962470 | Crankshaft pulse position developing apparatus having a synchronous digital filter A digital system for providing a series of pulses that are related to the angular position of an engine crankshaft. A square wave signal is developed which is applied to the input of a synchronous digital filter. The digital filter provides a noise-immune... | 10/09/1990 |
| 4947017 | Composite weld gun and method of making same Structural elements of weld guns are made of composites for strength, low weight and long life. Anisotropic strength structures are fabricated by making a hollow form and applying layers of carbon fabric and unidirectional tape which are aligned with the ... | 08/07/1990 |
| 4947065 | Stator assembly for an alternating current generator A stator assembly for an alternating current generator. The stator core is a one-piece molded part that is formed of iron powder having a particle size in a range of about 10 to 250 microns. The powder is bound together by a thermoplastic material which c... | 08/07/1990 |
| 4925031 | Display having container means An advertising display comprises a display member that carries a container which may be a literature holder. The display member is formed of cardboard and is scored. To create an opening for insertion of the container in a front panel of the display membe... | 05/15/1990 |
| 4917410 | Electronic starting motor control An electric starting system for controlling an electric starter that has a solenoid for shifting a pinion and for closing solenoid contacts to energize a cranking motor that drives the pinion. The solenoid has a single coil connected in series with a plur... | 04/17/1990 |
| 4917411 | Electronic starting motor control with low voltage protection An electronic starting motor control having low voltage protection. The starting motor has a solenoid coil which when energized causes solenoid contacts to be closed to energize the motor and to move a pinion into mesh with the ring gear of an engine to b... | 04/17/1990 |
| 4916284 | Method of making hemmed joints utilizing laser welding Methods of laser welding zinc coated galvalized steel are disclosed. In a method that relates to forming hem joints for motor vehicle body components a sheet of steel is provided with a plurality of V-shaped tabs. When a hem joint is formed the V-shaped t... | 04/10/1990 |
| 4916327 | Electronic starting motor control having pinion block protection An electronic control for an electric engine starter that includes a cranking motor and a solenoid for moving a pinion into mesh with an engine ring gear and for operating solenoid contacts. If end tooth abutment occurs between the pinion and ring gear to... | 04/10/1990 |
| 4903674 | Spark developing apparatus for internal combustion engines Apparatus for developing and applying sparks to the combustion chamber of an internal combustion engine. The apparatus comprises separate primary and secondary winding units. The secondary unit includes a spark plug having an insulator. The insulator carr... | 02/27/1990 |
| 4903675 | Internal combustion engine ignition apparatus having a primary winding module Ignition apparatus for developing and applying sparks to the cylinders of an internal combustion engine. A plurality of a secondary spark developing units are respectively associated with the cylinders of the engine. Each secondary unit comprises a spark ... | 02/27/1990 |
| 4901689 | Electronic starting motor control having automatic disengagement and lockout An electric starting system for controlling the energization of an electric starting motor that is operative to crank an engine. An engine speed sensor is coupled to the engine and develops engine speed pulses, the frequency of which is a function of engi... | 02/20/1990 |
| 4901628 | Hydraulic actuator having a microwave antenna A microwave method and apparatus for detecting the position of a piston of a pneumatic cylinder. While the piston is being moved by fluid pressure a microwave signal is applied to a cavity defined by the piston and interior of the cylinder and the reflect... | 02/20/1990 |
| 4901690 | Electronic starting motor system having timed cranking period control An electronic control for an electric cranking motor. A start switch controls energization of the cranking motor. The control has an up-down counter. When the start switch is closed the counter counts up and when the start switch is open the counter count... | 02/20/1990 |
| 4882515 | Alternating current generator An alternating current generator for supplying the electrical loads on a motor vehicle. The generator has a stator core that carries a three-phase stator or output winding. The rotor of the generator has two claw pole members that are so oriented that the... | 11/21/1989 |
| 4881512 | Internal combustion engine ignition system An ignition system for a spark ignited internal combustion engine wherein a source of high direct voltage is connected to a spark plug by a solid-state high voltage switch. The switch comprises a plurality of series connected metal oxide semiconductor fie... | 11/21/1989 |
| 4866269 | Optical shaft position and speed sensor A fiber optic detector head senses a light reflective or transmissive pattern on an encoder disk rotated by an engine shaft. The pattern results in four different light levels which are translated by a detector into an electrical pulse train having four d... | 09/12/1989 |
| 4866268 | Optical fast synchronization shaft position and speed sensor A fiber optic detector head senses a light reflective or transmissive pattern on an encoder disk rotated by an engine shaft. The pattern results in three different light levels which are translated by a detector into an electrical pulse train having three... | 09/12/1989 |
| 4864151 | Exhaust gas turbine powered electric generating system An exhaust gas turbine powered electric generating system for supplying electrical loads on a motor vehicle. The inlet of the gas turbine is supplied with the exhaust gas of an internal combustion engine. The effective turbine inlet area is controlled by ... | 09/05/1989 |
| 4860499 | Apparatus for measuring grinding forces on ceramic parts A spark plug grinding machine is equipped with force sensors to measure grinding forces and other forces attendant to a grinding operation. Ceramic spark plug insulators are carried by spindles on a Ferris wheel into a grinding station. A control wheel en... | 08/29/1989 |
| 4862123 | Solenoid for electric starters A solenoid for an electric starter. The solenoid has a metal case that contains a coil winding assembly. The coil winding assembly includes a plastic coil spool that carries a pull-in coil and a hold-in coil. One end of the coil spool supports a plurality... | 08/29/1989 |
| 4843580 | Noise immune crankshaft pulse position developing apparatus A digital system for providing pulses that represent the position of an engine crankshaft that has a digital filter for filtering out pulses caused by noise. A square wave signal having voltage pulses that represent crankshaft position is applied to the i... | 06/27/1989 |
| 4841932 | Spark timing control A spark timing control for an electronic internal combustion engine ignition system that provides a constant spark advance regardless of engine speed. A series of crankshaft pulses are developed which occur at each 60 degrees of rotation of the crankshaft... | 06/27/1989 |
| 4836175 | Ignition system dwell control A control circuit for developing a digital signal for use in a closed loop dwell control of an electronic internal combustion engine ignition system. The circuit has a ramp counter and a down-counter. The ramp counter counts-up clock pulses for a period o... | 06/06/1989 |
| 4836015 | Method and apparatus for determining the compression ratio of an engine cylinder A method of determining the compression ratio of a cylinder of an internal combustion engine. While the engine is being driven by a prime mover a PV curve is developed which is stored in the memory of a microprocessor. The unswept volume of the cylinder i... | 06/06/1989 |
| 4830333 | Solenoid valve A solenoid operated fluid control valve. The control valve has a plastic housing that supports a coil winding. A valve plunger and a stop member both of which are formed of magnetic material carry magnetic flux developed by energization of the coil windin... | 05/16/1989 |
| 4829380 | Video processor A video processor operating at camera frame rates is interposed between a camera and a vision system to enhance the signal for improved vision analysis, but always being transparent to the system. Alternatively, in some cases, the processor can be functio... | 05/09/1989 |
| 4829228 | Dual generator electrical system A motor vehicle electrical system that has two alternating current generators for supplying current to the electrical loads on the vehicle including a storage battery. Both alternating current generators are connected to rectifier means which supply direc... | 05/09/1989 |
| 4829174 | Flexible tube optical intrusion detector A hollow flexible vinyl or other plastic tube having a shiny inner wall is disposed along a boundary where intrusion detection is desired. A beam of infrared radiation from an LED at one end of the tube is passed through the tube by reflections from the w... | 05/09/1989 |
| 4823032 | End frame and stator assembly for a dynamoelectric machine An end frame and stator assembly for a dynamoelectric machine such as an alternating current generator. The assembly comprises a slotted stator core that supports a stator winding, a rotor bearing and a metallic heat dissipating insert that supports the b... | 04/18/1989 |
| 4797549 | Optical sensor and method of making same An optical sensor has a gap for a toothed modulator wheel and accurately aligned optical fibers on either side of the gap. The fibers form a U-shape to allow compact sensor design. The sensor is fabricated by inserting a single optical fiber in a mold and... | 01/10/1989 |
| 4785214 | Brush rigging for dynamoelectric machines Brush rigging for a dynamoelectric machine such as an electric cranking motor for cranking an internal combustion engine. A support carries a plurality of radially extending brush holders each of which slidably supports a brush. The brushes are urged radi... | 11/15/1988 |
| 4780259 | Method of securing metallic terminal to thermoplastic distributor cap A method of securing terminals to a distributor cap and to the cap formed thereby. A molded thermoplastic distributor cap is provided which has bores formed in the towers of the cap. Die cast zinc terminals having ribs and recesses therebetween are partia... | 10/25/1988 |
