Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7114661 | Thermally actuated fluid shuttle valve A thermally actuated fluid shuttle valve that is a three-way direction control valve that shifts when fluid passing through said valve reaches a preset temperature. The control valve, including three ports, an internal shiftable spool, and a thermal element, wherein... | 10/03/2006 |
| 7007658 | Vacuum shutdown system A device for shutdown of an internal combustion engine which provides for the cessation of fuel and air mixture in a carburetor supplying the cylinders of the engine with fuel for ignition. The device features a conduit in sealed engagement with the fuel supply bowl... | 03/07/2006 |
| 6959921 | Temperature responsive valve assembly for a pneumatic spring A temperature responsive valve assembly for a gas spring includes a valve body, a seal, a bi-metal valve and a locking member. The valve body includes a flexible radial member defined along the outer periphery of the valve body. Each radial member includes a radiall... | 11/01/2005 |
| 6932064 | Capacitor discharge ignition A capacitor discharge ignition (CDI) system includes a trigger circuit that generates a trigger signal in synchronism with operation of an engine for discharging an ignition capacitor. A timing circuit is connected to the trigger circuit for controlling the timing o... | 08/23/2005 |
| 4516551 | Control system for ignition timing and exhaust gas recirculation of combustion engine A control system for ignition timing and exhaust gas recirculation which includes a vacuum controller operated by a power source of negative pressure to advance the ignition timing, an EGR valve operated by a power source of negative pressure to recircula... | 05/14/1985 |
| 4499874 | System for controlling the ignition timing of an engine A system for controlling the ignition timing of an engine provided with a supercharger. The system comprises a vacuum advance device comprising two chambers defined by a diaphragm and a rod connecting the diaphragm to an advance mechanism of a distributor... | 02/19/1985 |
| 4450809 | Ignition timing control system for an internal-combustion engine An ignition timing control system for an engine using a vacuum advance unit connected to a distributor and communicated with an intake passage of the engine, which comprises: a throttle valve plate received within the intake passage; first and second port... | 05/29/1984 |
| 4411241 | Method of controlling EGR for internal combustion engines An internal combustion engine has a primary intake passage including a primary throttle valve for supplying engine cylingers with an air-fuel mixture under a full range of loads, a secondary intake passage including a secondary throttle valve for supplyin... | 10/25/1983 |
| 4335690 | Temperature-detection type change-over valve A temperature-detection type change-over valve for switching the state of communication between a plurality of passages, suitable for use in combination with a controller for controlling the operation of an internal combustion engine. The valve has a ther... | 06/22/1982 |
| 4296721 | Control system having an improved condition responsive valve construction The condition responsive valve construction has a valve seat disposed between a pair of ports to interconnect the same together and has a valve member for opening and closing the valve seat in response to a condition sensed thereby, a by-pass passage bein... | 10/27/1981 |
| 4274378 | Ignition control system for an internal combustion engine An ignition control system for an internal combustion engine, having an on-off device for controlling, at every one operational cycle of the engine, a timing to generate a discharge arc flame in each of the spark plugs to ignite the combustible mixture in... | 06/23/1981 |
| 4241709 | Device for adjusting the ignition time in internal combustion engines A device for the adjustment of the ignition time of an internal combustion engine as a function of the vacuum in the intake line which is provided with a flow regulator in the form of a throttle valve or the like.... | 12/30/1980 |
| 4198938 | Vacuum actuated system A vacuum actuated system comprises a carburetor induction passage having a plurality of vacuum ports, vacuum servo means, fluid network means connecting the plurality of vacuum ports to the vacuum servo means and control means for selectively opening and ... | 04/22/1980 |
| 4191147 | EGR/ignition timing control system for an internal combustion engine An EGR/ignition timing control system for an internal combustion engine having a vacuum advancer and an EGR system, wherein the control system includes a vacuum valve which is operated at the same critical vacuum as an EGR valve of the EGR system so as to... | 03/04/1980 |
| 4181106 | Engine control system and a differential vacuum regulator therefor or the like A differential vacuum regulator having a housing provided with an inlet for being interconnected to a vacuum source and an outlet for being interconnected to a vacuum operated device, valve means being carried by the housing for interconnecting the inlet ... | 01/01/1980 |
| 4177776 | Ignition system for internal combustion engines An ignition system for a spark-ignition type internal combustion engine comprising an ignition device capable of performing the spark timing control function, wherein in order to improve the engine torque, a temperature detecting element for detecting the... | 12/11/1979 |
| 4158349 | Ignition timing control system for an internal combustion engine An ignition timing control system for an internal combustion engine, including a vacuum actuator connected to turn a point base about the axis of the rotary cam which operates the breaker points to advance or retard the ignition timing. The vacuum actuato... | 06/19/1979 |
| 4149499 | Vacuum controlled ignition timing apparatus for internal combustion engine Ignition timing control apparatus for an internal combustion spark ignition engine employs a vacuum actuator having a movable element positioned between first and second vacuum chambers and arranged to advance or retard the spark timing. A single three-wa... | 04/17/1979 |
| 4140275 | Temperature responsive valve construction A temperature responsive valve construction comprises a housing member having an inlet and an outlet formed therein and carrying a resilient valve seat that is adapted to interconnect the inlet with the outlet when the valve seat is open, and a one piece ... | 02/20/1979 |
| 4133324 | Ignition timing control for engine Spark timing control apparatus for an internal combustion engine having a throttle controlled intake passage for an air-fuel mixture. A vehicle is powered by the engine. A vacuum line from the intake passage downstream from the throttle valve is connected... | 01/09/1979 |
| 4112891 | Temperature compensated internal combustion engine ignition spark vacuum advance system The ignition spark initiating mechanism of the ignition distributor is operated by a vacuum responsive device for adjusting ignition spark timing in response to engine vacuum. A temperature responsive valve located in a position at which it is exposed to ... | 09/12/1978 |
| 4112888 | Ignition timing controller for a gasoline engine An ignition timing controller for a gasoline engine on an automobile or the like. The apparatus comprises a thermo sensor actuated in response to variation in an engine cooling water temperature and a negative pressure delay valve. The thermo sensor has a... | 09/12/1978 |
| 4108372 | Engine control system and a differential vacuum regulator therefor or the like A differential vacuum regulator having a housing provided with an inlet for being interconnected to a vacuum source and an outlet for being interconnected to a vacuum operated device, valve means being carried by the housing for interconnecting the inlet ... | 08/22/1978 |
| 4094282 | Ignition timing control apparatus for engine during warm-up An ignition timing control system for internal combustion engines during warm-up utilizes opposed chambers separated by a flexible diaphragm to control movement of a rod to advance or retard the ignition timing. Temperature responsive electric switches en... | 06/13/1978 |
| 4091778 | Vacuum advancer system for a gasoline engine An improvement in a vacuum advancer which controls the ignition timing of a gasoline engine responding to an engine load comprises a first pipe which is connected between a port in a wall of a carburetor adjacent a throttle valve and a diaphragm chamber o... | 05/30/1978 |
| 4086889 | Electromagnetic selector valve system An electromagnetic selector valve system having an electrically conductive coil adjacent a moveable core within a valve body. First, second and third valve passages are in communication with the valve body, and biasing means are adapted to bias the recipr... | 05/02/1978 |
| 4077373 | Ignition timing control device for an internal combustion engine A spark-advance mechanism for an internal combustion engine is operated by vacuum pressure in the engine intake manifold. A conduit connecting the spark-advance mechanism to the intake manifold includes a solenoid operated valve which is normally open, an... | 03/07/1978 |
| 4068633 | Ignition system for internal combustion engines An ignition system for a spark-ignition type internal combustion engine comprising an ignition device capable of performing the spark timing control function, wherein in order to improve the engine torque, a temperature detecting element for detecting the... | 01/17/1978 |
| 4068634 | Control system for ignition timing of engine Timing control mechanism for an internal combustion engine employs a vacuum chamber connected to a solenoid valve operated by a thermal switch responsive to engine temperature. The solenoid valve connects the vacuum chamber to one of two vacuum outlets co... | 01/17/1978 |
| 4034726 | Temperature compensated internal combustion engine ignition spark vacuum advance system The spark initiating mechanism of the ignition distributor is operated by the operating rod of a vacuum actuator unit in response to engine intake manifold vacuum to provide ignition spark vacuum advance. The enclosed space defined by the outer casing of ... | 07/12/1977 |
| 4031869 | Ignition-timing adjusting system for spark-ignition internal combustion engines This discloses an ignition-timing adjusting system for internal combustion engines, which realizes an advance of the ignition-timing relating to the temperature of an engine. This system comprises vacuum advance means responsive to a vacuum produced by th... | 06/28/1977 |
| 4027633 | Ignition timing control system Two bimetallic leaf valves having thermal hysteresis characteristics different from each other are provided to permit or inhibit transmission of engine induction passage vacuum to a distributor motor to advance or retard the ignition timing in accordance ... | 06/07/1977 |
| 4024845 | Temperature responsive pneumatic ignition timing control device An ignition timing control device for an internal combustion engine includes a body having at least three ports, the first port of which draws vacuum thereinto, the second port of which draws atmospheric air thereinto and the third port of which emits vac... | 05/24/1977 |
| 4005688 | Ignition system for internal combustion engines An ignition system for a spark-ignition type internal combustion engine comprising an ignition device capable of performing the spark timing control function, wherein in order to improve the engine torque, a temperature detecting element for detecting the... | 02/01/1977 |
| 3998192 | Ignition timing change-over device An ignition timing change-over device for an internal combustion engine comprising a vacuum advancer for causing rotation of the breaker plate of the contact breaker toward an ignition timing advancing direction, a vacuum retarder for causing rotation of ... | 12/21/1976 |
| 3995607 | Vacuum retard delay valve An internal combustion engine for automotive vehicles is started and operated with decreased fuel enrichment when the engine is cold by delaying spark retard as the vehicle is accelerated to save fuel and reduce accumulated pollutants collected during war... | 12/07/1976 |
| 3994269 | Multistep fluid control valve The multistep fluid control valve comprises a valve case having a plurality of valve seats. A valve stem is provided in the valve case and is capable of being continuously or stepwise displaced axially. At least one valve body is shiftably mounted on the ... | 11/30/1976 |
| 3987770 | Heat responsive pneumatic ignition timing control device An ignition timing control device for an internal combustion engine includes a body having at least three ports, the first port of which draws vacuum thereinto, the second port of which draws atmospheric air thereinto and the third port of which emits vac... | 10/26/1976 |
| 3978831 | Control device for a vacuum advancer A control device for a vacuum advancer of the type for actuating the vacuum advancer in the directions of advancing and delaying the ignition timing under the control of a discriminating means to evaluate the operating condition of the engine. The vacuum ... | 09/07/1976 |
| 3965874 | Ignition timing control apparatus An ignition timing control apparatus for an internal combustion engine which includes two diaphragms, each of which is selectively connected through a change-over valve to a respective one of two vacuum ports in the passage of carburetor. One of the ports... | 06/29/1976 |
