Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7414504 | Laminated solenoid plunger for solenoid assembly A solenoid plunger for use in solenoid driven multi-line embossing systems is constructed of magnetic steel laminations that are attached to a center block which is machined to mount a solenoid shaft and anti-rotate pins. The laminations are attached to the center b... | 08/19/2008 |
| 7315230 | Adjustable solenoid Embodiments of the present invention provide solenoid plungers, solenoid actuators, and solenoid-actuated mechanisms, that provide for an adjustable stroke, adjustable rated force, and adjustable plunger extension that overcome the problems and issues associated wit... | 01/01/2008 |
| 7116017 | Device for reducing deterioration of image quality in display using laser Disclosed is a device for reducing deterioration of image quality which can get rid of speckle by equalizing a laser from a light source on a screen by vibrating a reflective mirror installed between the light source and the screen at a predetermined amplitude. The ... | 10/03/2006 |
| 7093778 | Device for delivering and/or spraying flowable media, especially fluids The invention concerns a device to convey and/or spray free-flowing media, in particular fluids, which works in accordance with the energy storage principle and is designed as an electromagnetically-powered reciprocating pump with at least one armature device as a d... | 08/22/2006 |
| 7049916 | Electromagnetic apparatus An electromagnetic apparatus includes a solenoid having a movable core for being attracted to a fixed core when a coil is energized, a shaft coupled to the movable core for displacement in unison with the movable core, and a valve mechanism having a ball for selecti... | 05/23/2006 |
| 6674351 | Electromagnet with a magnet armature In an electromagnet having an armature, in particular for use in a solenoid valve, which includes a solenoid coil, a magnet core which passes through the solenoid coil and has at least one pole face, an armature which is supported perpendicularly to the a... | 01/06/2004 |
| 5476079 | Electromagnetic valve for opening or closing fluid passage An electromagnetic valve opens and closes a fuel return passage (23, 24) of a fuel injection pump, to control a time of fuel return when fuel compressed by a plunger (12) of the fuel injection pump is overflowed from a high-pressure fuel chamber (19) to a... | 12/19/1995 |
| 5453821 | Apparatus for driving and controlling solenoid impact imprinter A method and apparatus for a two-pulse solenoid embossing system implementing an amplitude feedback circuit, i.e., current monitor (48), to provide precise amplitude and timing control over two current pulses (4, 5), and thereby provide precision control ... | 09/26/1995 |
| 5192936 | Solenoid A solenoid having a bobbin with a rectangular core hole in which is mounted an armature having a rectangular cross section, and a pole piece having a rectangular cross section. The bobbin has a magnet wire coil wound around a bobbin tubular body which is ... | 03/09/1993 |
| 4871989 | Solenoid with manual actuation mechanism A manual actuation mechanism for a solenoid having a plunger with one end connected to an external apparatus, such as a diesel engine fuel pump energization of the solenoid coil drives the plunger axially from an initial position to an actuation position.... | 10/03/1989 |
| 4679017 | Emergency manual actuation mechanism for a solenoid An emergency manual actuation mechanism for a conventional solenoid having a plunger with one end connected to an external apparatus, such as a diesel engine fuel pump, in which energization of the solenoid coil retracts the plunger axially; the mechanism... | 07/07/1987 |
| 4557193 | Printing device In a printing device for printers or typewriters a hammer (11) is axially movable between a print position and a rest position. At one end the hammer has an impact surface (12) which acts upon a selected one of a number of type characters disposed along t... | 12/10/1985 |
| 4528534 | Solenoid with tolerance control A solenoid is provided having a simplified construction which minimizes the expense of manufacture and which gives precise, uniform and reliable performance. The solenoid includes a bobbin defining an armature bore and including a collar portion of substa... | 07/09/1985 |
| 4518939 | Solenoid with retainer stop A solenoid is provided having a simplified construction which gives precise, uniform and reliable performance. The solenoid includes a base member which supports a bobbin. The bobbin is a one-piece, integrally molded unit with a hexagonal bore that extend... | 05/21/1985 |
| 4496921 | Electromagnetic actuator having adjustable plunger An adjustable electromagnetic actuator is disclosed which is operable to control the displacement of a movable workpiece member. Included in the actuator is a coil assembly including means defining a bore and an energizeable field coil which surrounds the... | 01/29/1985 |
| 4269493 | Electromagnetic camera shutter control device An electromagnetic shutter control device for controlling opening and closing operation of the shutter of a compact folding camera includes a bobbin having a magnetic winding therearound, a stationary permanent magnet over which the bobbin fits for magnet... | 05/26/1981 |
| 4262271 | Solenoid having non-rotating plunger An electromagnetic solenoid incorporating a plunger return mechanism comprising a spring retainer non-rotatably fitted to the plunger, and a spring held in compression between the retainer and a coil wound bobbin disposed about the plunger. The spring is ... | 04/14/1981 |
| 4250477 | Mechanical latch apparatus A mechanical latch attachment (20) for a control relay (21) includes a mechanical latch movement (77), a solenoid (49), and a pair of contact cartridges (33) that are disposed in a housing (25). The wear-resistant latch movement (77) has a latch (95) with... | 02/10/1981 |
| 4239401 | Impact printer hammer assembly In a solenoid driven hammer for an impact printer, the armature, which is driven by the magnetic field provided by the solenoid's coil, is integral with the hammer which strikes a printing element on a print wheel. The shape of the pole piece in the solen... | 12/16/1980 |
| 4183000 | Electromagnetic safety mechanism The fail-safe gas valve solenoid construction disclosed herein employs a fixed electromagnet which, when energized, actuates an operating rod by means of an armature which is relatively loosely secured to the shaft to permit self-alignment between the mag... | 01/08/1980 |
| 3952774 | Electrically operated mini-valve There is here provided an electrically operated valve primarily for the control of a pressurized gas, such as air, and particularly adapted for manufacture in very small units. The electrical components and parts reactive thereto are so constructed and ar... | 04/27/1976 |
