Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7423504 | Electromagnetic relay An electromagnetic relay is provided which is capable of reducing a contact bounce at time of closing a contact. The electromagnetic relay is so configured that an opposed angle θ is 0° | 09/09/2008 |
| 7330091 | Electronic type protective relay An electronic type protective relay integrates the mechanical structure into a single operation rod to protect electric machinery. The electronic type protective relay includes an insulating shell, a tripping rod, a magnetic-force device and an operation device. The... | 02/12/2008 |
| 7283026 | Electromagnetic relay An electromagnetic relay including a base, an electromagnet fitted to the base, and a contact section operable to open or close with an operation of the electromagnet. The base includes a retaining face firstly contacting with the yoke of the electromagnet, in an ac... | 10/16/2007 |
| 7071431 | Electronically latching micro-magnetic switches and method of operating same A switch with an open state and a closed state suitably includes a cantilever having first and second states corresponding to the open and closed states of the switch, respectively. The switch may also include a magnet configured to provide an electromagnetic field ... | 07/04/2006 |
| 7027682 | Optical MEMS switching array with embedded beam-confining channels and method of operating same A new optical switch device and method of operating such a device overcomes alignment problems through the use of an optical signal-confining channel that may be embedded so as to confine optical signals in a desired propagation path such that the optical signal's a... | 04/11/2006 |
| 6949866 | Systems and methods for overcoming stiction A number of methods and systems for overcoming stiction are provided. The systems include electro-mechanical systems capable of exerting a variety of forces upon areas prone to stiction. The systems can be MEMS arrays or other types of devices where stiction related... | 09/27/2005 |
| 6734513 | Semiconductor device and microrelay In one embodiment, a semiconductor device having single or multi-layer intermediate layers that easily adhere to a glass frit and lead lines of respective interconnections is disclosed. In general, the single or multi-layer intermediate layers are formed on at least... | 05/11/2004 |
| 6130594 | Magnetically driven electric switch The present invention relates to a switch with a magnetic drive having an armature movable linearly between two end positions and connected to at least one switch contact, which is under the influence of magnetically generated forces in the end positions.... | 10/10/2000 |
| 6124650 | Non-volatile MEMS micro-relays using magnetic actuators An actuation device employing square-loop latchable magnetic material having a magnetization direction (polarization) capable of being changed in response to exposure to an external magnetic field is disclosed. The magnetic field is created by a conductor... | 09/26/2000 |
| 6118359 | Polarized electromagnetic relay A polarized magnetic relay has a base body, an armature, an envelope that encompasses insulating material, a coil, a core and a bar-shaped permanent magnet. The base plane is defined by the bottom side of a base body. The armature is arranged between two ... | 09/12/2000 |
| 6043730 | Electromagnetic actuator An electromagnetic actuator has an iron core around which a coil is wound; two permanent magnets, the same poles of which are placed on the ends of the core which extend beyond the coil and which have the same direction of polarity; magnetic poles formed ... | 03/28/2000 |
| 6034583 | Polarized electromagnetic relay A polarized electromagnetic relay has a base body, an armature, an envelope that comprises insulating material, a coil, a core and a bar-shaped magnet. The base plane is defined by a bottom side of the base body. The armature is arranged between two conta... | 03/07/2000 |
| 5959519 | Electromagnetic switching device A switch device including an inner yoke and an outer yoke are arranged around the winding of an electromagnetic block, and a plate-shaped permanent magnet is inserted between the two yokes. A highly efficient actuation of the switching device is achieved ... | 09/28/1999 |
| 5900791 | Armature-mounting arrangement for a hinged-armature relay An armature-mounting arrangement for a hinged-armature relay includes a yoke (3), an armature (1) positioned at an end portion of the yoke, and an armature holding spring (2) which has at least one switching contact thereon and which is mechanically coupl... | 05/04/1999 |
| 5864268 | Electromagnetic relay and method of adjustment of a response voltage thereof An electromagnetic relay constructed as a hinged-armature relay in which an armature (5) is attached to a flat-shaped spring (6) which spring is constructed as one piece to serve both as a switch-contact spring and as a return spring and which is mechanic... | 01/26/1999 |
| 5844456 | Electromagnetic relay An electromagnetic relay is provided with an electromagnet system with a U-shaped core yoke and an essentially flat armature, which form a working air gap on a longitudinal side underneath the coil winding. One yoke limb lies immediately on the coil windi... | 12/01/1998 |
| 5801608 | Electromagnetic relay with combined contact/reset spring The relay has a magnet system with an armature that operates on a switching spring via an actuating element. This switching spring has a frame-shaped contact spring as well as a fork-shaped reset spring, intermeshed in one plane and mutually decoupled, wh... | 09/01/1998 |
| 5781089 | Electromagnetic relay An electromagnetic relay includes a winding, a magnetic core disposed within the winding, and an armature mounted for movement at a first end of the winding. At least one movable circuit contact is operably associated with the armature and movable with re... | 07/14/1998 |
| 5398011 | Microrelay and a method for producing the same A microrelay including a substrate having a pair of fixed contacts fixed on a surface thereof and a movable section having a pair of movable contacts opposed to the pair of fixed contacts. The movable section includes a frame for fixing the movable sectio... | 03/14/1995 |
| 5309623 | Method of making a seesaw balance type microminiature electromagnetic relay In a seesaw balance type microminiature electoromagnetic relay including an armature unit composed of two movable contact springs having a pivot arm formed at the center thereof and contacts formed at every end thereof, an armature having a protrusion on ... | 05/10/1994 |
| 5034714 | Universal relay The relay of the present invention is economically adapted for nuclear and commercial applications. The reliability of the relay is enhanced by utilizing a split coil and a permanent magnet located therebetween. The so-called split coil/permanent magnet c... | 07/23/1991 |
| 4998082 | Latching relay switch assembly A latching relay switch assembly which includes a coil section and a switch or contact section. The coil section includes at least one permanent magnet and at least one electromagnet. The respective sections are, generally, arranged in separate locations ... | 03/05/1991 |
| 4827231 | Molded case circuit breaker with viewing window and sliding barrier A molded case circuit breaker includes a clear viewing window through its top cover to enable the position of its internally disposed separable electrical contacts to be externally visually discerned. A manually engagable handle extending through an openi... | 05/02/1989 |
| 4782315 | Bistable polarized electromagnet A bistable polarized electromagnet is provided having a mobile armature with a permanent magnet and pole pieces which cooperate with a fixed yoke through two pairs of air gaps for each of which one is variable whereas the other is substantially constant. ... | 11/01/1988 |
| 4751487 | Double acting permanent magnet latching solenoid A solenoid which is driven positively in both directions by reversal of coil current and held in place at either end by flux from a permanent magnet located at the center of the frame. The permanent magnet is formed of two opposed sections fitting tightly... | 06/14/1988 |
| 4730175 | Polarized electromagnet device A polarized electromagnet device is constructed with a magnetic block movable within a specially designed yoke in response to the attraction forces of permanent magnets and an electromagnetic coil. The movable block and yoke designs form magnetic circuits... | 03/08/1988 |
| 4713638 | Polarized electromagnetic relay A bistable type of electromagnetic relay has a movable block including a pair of permanent magnet units. Each of the magnet units has a permanent magnet and a pair of generally U-shaped magnetic plates attached to its opposite poles. A rotation of the mov... | 12/15/1987 |
| 4701721 | Core formed of hard and soft magnetic materials for an electrical relay apparatus A miniaturized electromechanical relay (1) having an armature (14) and a spring assembly (13) mounting contacts with a magnetic core member (15) for activating the armature to operate the spring assembly to engage and disengage the contacts. The magnetic ... | 10/20/1987 |
| 4692728 | Self-aligning spring mechanism for an electrical switch An electromagnetically operated relay having a spring which compensates for misalignment of a moveable block as shown and described. The movable block reciprocates within said relay housing in response to forces exerted by the electromagnet. The block inc... | 09/08/1987 |
| 4688010 | Electromagnetic relay An electromagnetic relay has a casing of electrically insulative material which is divided by an insulating partition into a coil space for receiving an electromagnet and a switching space for receiving a contact assembly. An armature is magnetically coup... | 08/18/1987 |
| 4673908 | Polarized relay A polarized relay comprises a bar-like core having coil, and a yoke connected to the core and extending in parallel therewith. An armature including a permanent magnet is laterally movably disposed between a pair of upstanding legs formed at a free end of... | 06/16/1987 |
| 4668928 | Bi-stable switch with pivoted armature A switch device comprises a support member having at least first and second stationary contacts thereon. An armature is mounted on the support member by means of a body of elastomeric material that is attached to both the support member and the armature. ... | 05/26/1987 |
| 4621246 | Polarized electromagnet relay A polarized electromagnet relay with reduced width and height is disclosed to have on a base plate an electromagnet block, an armature block with a permanent magnet and at least one contact assembly. The armature block is cooperative with the electromagne... | 11/04/1986 |
| 4602230 | Polarized electromagnetic relay An improved polarized relay characterized by a coil body being received in a recess of a base body along with a permanent magnet arrangement which has a pair of pole plates extending in a common plane with portions bent to form an air gap for receiving a ... | 07/22/1986 |
| 4563663 | Core member for an electromagnetic relay One end of a yoke is arranged near one end of an iron core of an electromagnet. The other end of the yoke is coupled to the other end of the iron core. The one end of the yoke has side walls which oppose the side surfaces of the one end of the iron core, ... | 01/07/1986 |
| 4553118 | Polarized electromagnetic device Having a core wound with the magnetizing winding, and a yoke separated from the core, and an armature which has the permanent magnets, both pole pieces of the core and the facing-surfaces of the yoke being positioned apart in a predetermined space; in sai... | 11/12/1985 |
| 4521757 | High speed electromagnetic mechanical switch A high speed electromagnetically actuated electromechanical switch is provided by a bistable electric snap blade operated by an electromagnetic actuator. A magnetically permeable yoke directs the flux paths of a pair of coaxial coils. An armature plunger ... | 06/04/1985 |
| 4509025 | Polarized electromagnetic relay An electromagnetic relay has a hallow coil body and coil having a longitudinal axis with a bar-shaped armature pivotably mounted for movement in and extending through the coil body, a permanent magnet arrangement having polarization directions perpendicul... | 04/02/1985 |
| 4499442 | Transfer-type electromagnetic relay comprising a permanent magnet under a fixed contact stud In a transfer-type electromagnetic relay comprising first and second lead members (26, 27) for first and second fixed contact studs (31, 32), respectively, and a third lead member (28) for an armature (36), first and second permanent magnets (46, 47) are ... | 02/12/1985 |
| 4498065 | Electromagnetic relay An auto-holding electromagnetic relay is described comprising a main yoke having perpendicular and horizontal parts at right angles to each other. An exciter coil is mounted on the inner surface of the perpendicular part. On the outer surface of the horiz... | 02/05/1985 |
