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| Number | Title | Issue Date |
| 7741941 | Dual armature solenoid valve assembly An electromagnetic valve assembly having a dual armature solenoid for controlling two valves is disclosed. In one embodiment, the solenoid may include a first pole piece, a second pole piece spaced from the first pole piece, a coil disposed about at least a portion ... | 06/22/2010 |
| 7428469 | Three-dimensional-information detecting system and three-dimensional-information inputting device A three-dimensional-information detecting system includes a switching portion that sequentially selects sensor coils of a three-dimensional-information detecting device. Electromagnetic coupling is used to perform signal transmission and reception between the sensor... | 09/23/2008 |
| 7347221 | Solenoid valve A valve assembly comprises two valves and a single solenoid actuator with only one magnetizing coil that controls both valves. The corresponding magnetic circuit comprises a yoke with only two pole pieces. The valves are arranged concentric to one another. The valve... | 03/25/2008 |
| 7199687 | Solenoid type drive and starter using the same A solenoid type device as a magnetic switch of a starter 10 comprises an exciting coil 3f that is energized and generates magnetic force, a plunger 3a that is a moving core which is a part of the magnetic circuit, and a fixed core ... | 04/03/2007 |
| 7196602 | Solenoid A solenoid is provided which, in the preferred embodiment, has a bobbin having an axial opening in it. A divider is mounted within the opening. Respective ones of a first pole piece and a second pole piece are located on opposite sides of the divider. A permanent ma... | 03/27/2007 |
| 6975191 | Resettable switching device A resettable switching device, e.g. a relay, comprises a fixed contact (18) and a movable contact (28). A solenoid (12) is fixed relative to the fixed contact and a ferromagnetic plunger (20) carries the movable contact. A spring (24 | 12/13/2005 |
| 6955186 | Electromagnetic double switching valve An electromagnetic dual-action control valve with a housing (2), with connections (15, 16, 17) for inflow and outflow lines for a pressure medium, with a solenoid (3) and with two armatures arranged to move within the solenoid (3) for ope... | 10/18/2005 |
| 6899118 | Single coil two operator controller A single coil, two operator controller for simultaneously actuating two spaced apart magnetically responsive operators has a bar extending between the spaced apart operators, and a coil on the bar, between the operators for creating a magnetic field for moving the m... | 05/31/2005 |
| 6856222 | Biarmature solenoid A solenoid includes first and second armatures disposed on either side of a solenoid core. The core includes first and second sets of legs disposed on opposite sides of a central member. A drive circuit provides a first current level to cause flux to flow in a first... | 02/15/2005 |
| 6719265 | Electromagnetic actuator for a valve in the automotive field An electromagnetic actuator, particularly for use with valves in the automotive field, such as, for example, exhaust-gas recirculation valves, secondary-air valves, etc., having a housing with an electrical connector plug, a magnetic yoke, a coil unit, a guide eleme... | 04/13/2004 |
| 6047718 | Solenoid valve having coaxial armatures in a single coil design A solenoid valve having a coil, a pair of armatures including an inner armature slidable within a coaxial outer armature and the outer armature slidable within the coil, and a pair of valves. One of the valves is at or near the end of the outer armature e... | 04/11/2000 |
| 5933063 | Ground fault circuit interrupter A ground fault circuit interrupter has a pair of stationary contacts and a pair of movable contacts mounted in a housing. Also included is an electromagnetic coil mounted in the housing for generating an electromagnetic field. The interrupter also has a p... | 08/03/1999 |
| 5717372 | Dual armature solenoid A solenoid including a single coil of windings, an immovable stator, and opposed first and second armatures defining an air gap therebetween. A driving circuit energizes the coil to cause the first and second armatures to simultaneously move toward each o... | 02/10/1998 |
| 5398013 | Actuator for rotating a rotary member The invention is directed to an actuator which is mounted on a base to rotate a rotary member about a rotational axis thereof. The actuator includes a first magnetic rotary member which is rotatably mounted on the base about the axis, and provided with a ... | 03/14/1995 |
| 5394131 | Magnetic drive with a permanent-magnet armature The invention concerns a bistable magnetic drive with an assembled armature 3, 4 consisting of a high-grade, disk-shaped permanent magnet 3 with two appropriately shaped pole pieces 4,4' and displaceable sideways off the coil 1 transversely to its axis in... | 02/28/1995 |
| 5025239 | Electromagnetic actuator for cameras and the like An electromagnetic actuator suitable for use in combination with the mechanisms of cameras and the like. The electromagnetic actuator has a single electromagnet, and first and second armatures disposed opposite to the opposite attracting surfaces of the e... | 06/18/1991 |
| 5017901 | Controller for a movable member A tape recorder having a controller for a movable member is able to control the movement of the member between two states by one electromagnet. The controller includes an electromagnet having first and second attracting parts which correspond to first and... | 05/21/1991 |
| 4833435 | Electromagnetic relay An electromagnetic relay having a double armature structure comprises: an electromagnet; a pair of armatures which are individually rotatably arranged at the right and left positions of the electromagnet and are symmetrically rotated by the attractive for... | 05/23/1989 |
| 4810115 | Character selecting mechanism A character selecting mechanism for a printer having a plurality of type wheel units arranged axially on a shaft. The character selecting mechanism comprises a plurality of electromagnetic clutches each having a solenoid, a sleeve rotatably received in th... | 03/07/1989 |
| 4692729 | Direct current electromagnet having a movement of translation A magnetic core (3) surrounded by a coil (1, 2) bears a first pole shoe (4) forming a large-surface air-gap with two zones (5a, 6a) of two armatures (5, 6) fixed to one another and disposed magnetically in parallel. The core (3) is continued beyond the coil an... | 09/08/1987 |
| 4682133 | Electro-magnetic relay having two armatures A relay includes two armatures each having a contact spring and a contact piece secured thereto which interacts with the respective cooperating contact element. The two movable contact pieces are electrically connected by a stranded copper conductor so th... | 07/21/1987 |
| 4646043 | Solenoid having a plunger non-fixedly adjoining an end of the armature A solenoid is disclosed which uses a plastic coil bobbin as the bearing surface for the armature, the body of which extends coaxially through the central cylindrical cavity of the bobbin. Extending into this cavity, from the end opposite the armature, is ... | 02/24/1987 |
| 4540965 | Electromagnetic assembly An electromagnet assembly is provided. It has a first movable core and a second movable core provided in association with a coil. The first movable core is energized toward the second movable core by a first spring while the second movable core is urged i... | 09/10/1985 |
| 4503411 | Dual plunger solenoid device A solenoid-operated plunger device comprising a frame and a solenoid coil contained within the frame. Two or more movable plungers, separated by a barrier, are located within the solenoid coil. The plungers project the ends of the solenoid coil, and are s... | 03/05/1985 |
| 4431952 | Electric powered apparatus An improved vacuum pump driven by a unique electrically powered servo motor. The vacuum pump comprises an extremely simple and inexpensive pump arrangement utilizing a reciprocating piston and a rolling lobe diaphragm to eliminate the need for close toler... | 02/14/1984 |
| 4405043 | Dynamically balanced vibratory system A dynamically balanced vibratory feeder system having a material handling component and a counterweighting component, the two components being drivingly interconnected and driven in opposed relative directions in a balanced fashion. The material handling ... | 09/20/1983 |
| 4369419 | Solenoid having spring biased lost motion link A solenoid having a linear pull stroke includes a coil operated plunger (16) having a lost motion coupling (20,28,32,38,40) adapted to be connected with a load in order to allow the plunger (16) to retract a predefined distance during the initial part of ... | 01/18/1983 |
| 4354662 | Force motor This invention relates to force motors that are used in single stage hydraulic valves that are responsive to electrical input signals. The inertia of the force motor is reduced by having only a small portion of the force motor move. By reducing the mass o... | 10/19/1982 |
| 4327345 | Solenoid having a multi-piece armature An electromagnetic solenoid is adapted to open and close an associated valve or to reciprocally engage a slideable member. The solenoid includes an electromagnetic and multi-piece armature enclosed within a protective housing. The armature comprises an in... | 04/27/1982 |
| 4246559 | Electro-magnetic relay structure A latching relay employing an electro-magnetic relay coil having associated therewith opposite end armatures. This relay coil receives operating power by way of an input contact member. One of the armatures carries a manually operated switch which also in... | 01/20/1981 |
| 4128044 | Method of controlling apparatus and servoactuator therefor A novel electropneumatic servoactuator utilizing a fluid pressure control signal chamber and a duty-cycle control valve alternating between a fluid supply pressure port means and port means venting the chamber to the atmosphere and controlling fluid press... | 12/05/1978 |
| 4100519 | Alignment means for a moveable pole-plunger assembly A solenoid for operating various devices, such as a reversing valve, and which includes a C-frame having a first non-magnetic bushing mounted in the bight portion of the C-frame. A coil assembly is removably mounted in the C-frame and is retained therein ... | 07/11/1978 |
| 3961298 | Dual plunger solenoid A solenoid is provided in which the armature unit includes a primary plunger and a secondary plunger arranged in telescopic association one with the other and disposed so that the secondary plunger, having both a smaller mass and a smaller air gap than th... | 06/01/1976 |
| 3949330 | Coil and trip mechanism A coil and trip mechanism to interrupt an electrical circuit having a dual counter-balanced armature arrangement, one a clapper type armature and the other a plunger type. The clapper armature is mounted for movement between a latched position and a tripp... | 04/06/1976 |
