Electricity: magnetically operated switches, magnets, and electromagnets inventions 02/08

20080048807 - Electromechanical and solid-state ac relay with reduced arcing: An electromechanical/solid-state AC relay has an electromechanical winding coil that moves an armature to force mechanical contacts to open or close. Electrical arcing across the mechanical contacts that occur as the contacts are opening or closing can damage and severely reduce the lifetime of the relay. Contact arcing is prevented... Agent: Stuart T Auvinen

20080048806 - Electronic switching device, in particular circuit-breaker and associated operating method: An anti-serial cascade circuit including two silicon carbide JFETs and two silicon MOSFETs is known. Disclosed is a combination of a JFET, a smart power MOSFET SPM and a thyristor with an associated trigger circuit, which is connected in parallel to the SPM. According to an embodiment of the invention,... Agent: Harness, Dickey & Pierce, P.L.C

20080048808 - Silent electromagnetic relay: A silent electromagnetic relay in which a predetermined degree of silencing effect can be maintained regardless of a change to the specification, a higher silencing effect can be obtained at the time of return, the parts control is easy, and the cost of manufacturing is low. A first silent spring... Agent: Osha Liang L.L.P.

20080048809 - Non-contact switch: When a magnetic substance (104) is brought close to or separated away from an MR sensor (102), so that a direction of a magnetic flux (103) caused to flow through the MR sensor (102) is changed, an output voltage from the MR sensor (102) changes. Also, when a change in... Agent: Scully Scott Murphy & Presser, PC

20080048810 - Actuating device: The invention relates to an actuating device, particularly for actuating externally connected valves, comprising a housing (10) and a coil member (12). Said coil member (12) is disposed in the housing (10), is provided with a coil winding (14), and at least partially encompasses a pole tube (16). A pole... Agent: Roylance, Abrams, Berdo & Goodman, L.L.P.

20080048811 - Method for magnetizing ring magnet and magnetic encoder: An insert member (42) having an identical permeability is fitted in the circular center hole (41a) of a magnetic ring (41) which is then fitted in the circular hollow section (43a) of a fitting-over member (43) having an identical permeability. Under that state, the magnetic ring (41) is placed in... Agent: Flynn Thiel Boutell & Tanis, P.C.

20080048812 - Displacement device as well as a component placement device: A displacement device is provided with a linear motor which comprises a first part comprising magnetic strips and a second part comprising a coil block. The parts are connected via a linear guide. The second part is movable with respect to the first part in a conveying direction extending parallel... Agent: Foley And Lardner LLP Suite 500

20080042786 - Power switch comprising an interrupter unit disposed within an encapsulating housing: A circuit breaker has an interrupter unit, which is disposed within an encapsulating housing, and has a first contact piece and a second contact piece. The contact pieces can move in relation to one another and they are arranged axially opposite one another. The device further has a first current... Agent: Lerner Greenberg Stemer LLP

20080042787 - Lighting control module mechanical override: A switching device for selectively switching electrical power from an electrical power source to a load circuit comprises a housing. An electromechanical actuator is in the housing. A fixed contact is fixedly mounted in the housing. A contact arm is pivotally mounted in the housing. The contact arm carries a... Agent: Siemens Corporation Intellectual Property Department

20080042788 - Electromagnetic switch provided with a packing capable of suppressing wobbling motions of an electromagnetic coil: An electromagnetic switch is provided, which includes a solenoid, a housing member and a sealing member. The solenoid includes an electromagnetic coil which produces an electromagnetic force upon supply of current thereto and a case accommodating the solenoid. The housing member accommodates a pair of contacts of the switch, and... Agent: Oliff & Berridge, PLC

20080042790 - Linear actuator: A linear actuator is disclosed. A linear actuator that includes a first magnet and a second magnet secured with a predetermined gap in-between each other, a vibration magnet part interposed between the first magnet and the second magnet which is magnetized to repulse both the first magnet and the second... Agent: Staas & Halsey LLP

20080042789 - Mirror actuating device for projection systems: A magnetic actuator utilizes a single magnet and two voice coils to rotate a mirror between two angular positions with respect to a rest state. A magnetic field assembly applies magnetic flux across the voice coils. An upper plate and a lower plate are held together by a permanent magnet,... Agent: Pearne & Gordon LLP

20080042791 - Electronically actuated apparatus using solenoid actuator with integrated sensor: An electromagnetic actuator assembly that includes an annular frame, a coil assembly, an annular armature, a plunger and a sensor. The coil assembly is coupled to the frame and includes an annular core and an annular coil. The annular armature is received in the frame and abutted against the plunger.... Agent: Harness, Dickey & Pierce, P.L.C

20080036560 - Electromagnet apparatus: An apparatus for an electromagnet is disclosed. The apparatus includes a magnetizable stationary core having first and second end portions and a side portion, a magnetizable movable armature disposed proximate the core for establishing a magnetic circuit therebetween, and a permanent magnet disposed between the first portion of the core... Agent: Cantor Colburn, LLP

20080036559 - Distance protection relay and method: A protective relay for an electrical power distribution system and a method. The protective relay includes first and second current transformers arranged to sense a respective current flowing into a power line, and a voltage sensing device arranged to sense the voltage of the power line. The protective relay further... Agent: Venable LLP

20080036561 - Method and device for the safe operation of a switching device: A method and device are disclosed for safely operating a switching device with at least one main contact, which can be switched on or off, and which has contact elements and a moving contact bridge, and with at least one control magnet, which has a moving armature. During switching on... Agent: Harness, Dickey & Pierce, P.L.C

20080036562 - Method and device for the secure operation of a switching device: A method and a device for the secure operation of a switching device are disclosed, including at least one main contact which can be switched on and off and which includes contact pieces and a displaceable contact bridge, and also at least one control magnet which includes a displaceable anchor.... Agent: Harness, Dickey & Pierce, P.L.C

20080036563 - Actuator: The present invention relates to an actuator. In particular, the present invention relates to an actuator having improved acceleration for payloads at an optimum volume and mass of actuator. Specifically, the present invention relates to an actuator comprising a field structure assembly comprising an arrangement of permanent magnets and magnetically... Agent: Nixon & Vanderhye, PC

20080030288 - Relay with a contact arrangement consisting of contact springs: A relay has a main body with a base. An electromagnetic switching mechanism is arranged on the base. A contact arrangement includes at least one stationary contact spring and at least one moveable contact spring arranged on a first side of the main body. The moveable contact spring has a... Agent: Barley Snyder, LLC

20080030289 - Contactor for direct current and alternating current operation: The invention relates to a contactor for direct current and alternating current operation with at least one contact point with a fixed contact and a movable contact, at least one permanent magnet, arranged adjacent to the contact point, for the generation of a permanent magnetic blowout field and at least... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080030291 - Magnetic actuator for direct generation of a rotary actuation of a shaft with currentless fixation of the stop position: A magnetic actuator for the direct generation of a rotary actuation of a shaft (1) with currentless stop position fixation is proposed, which comprises at least one permanent magnetic anchor (2) configured as an annular segment and torque-proof connected to the shaft (1) and at least two electromagnet systems (7,... Agent: Davis Bujold & Daniels, P.l.l.c.

20080030290 - Magnetic stylus and visual display: A stylus arranges permeable flakes in a dispersion medium. The stylus includes a magnet having at least one side. A sleeve is disposed around the side of the magnet. The sleeve is made of a ferromagnetic material and arranged to modify the magnetic flux of the magnet. At least a... Agent: Holme Roberts & Owen, LLP