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| Number | Title | Issue Date |
| 5061914 | Shape-memory alloy micro-actuator A method of producing an integral piece of thermo-sensitive material, which is responsive to a shift in temperature from below to above a phase transformation temperature range to alter the material's condition to a shape-memory condition and move from on... | 10/29/1991 |
| 5027100 | Gas tube fail safe device for telephone protector modules A gas tube fail safe device for use in individual subscriber circuit telephone mmodules and related equipment, in which a fusible element is adapted to by-pass the conductive function of the gas tube in the event of gas tube failure. In one embodiment the... | 06/25/1991 |
| 5021761 | High-amp circuit breaker and a bistable element therefor A low voltage high-amp circuit breaker having a substantially rectangular bimetallic bistable element and a pair of terminals extending from the side thereof. The bistable element is attached to have one end move from a first normal electrically conductiv... | 06/04/1991 |
| 5004994 | Push-to-trip high-amp circuit breaker A low voltage high-amp circuit breaker (20) having a substantially reactangular bimetallic bistable element (41). The bistable element is attached to have one end move from a first normal electrically conductive position to a second non-electrically condu... | 04/02/1991 |
| 5003282 | Trip free/reset free manual reset A thermostat having an electrically insulating housing and a push button extending therein through a bottom wall thereof. Two normally closed contacts, one fixed and the other on a movable carrier with a projection are disposed within the housing. A sprin... | 03/26/1991 |
| 5003280 | Lead-supporting fuse and circuit including such a fuse An automotive fuse includes a pair of spring clips connected by a fusible bridge and a transparent shield extending laterally over the width of at least the bridge and a face of one of the clips. The shield is connected to only one of the clips, so that t... | 03/26/1991 |
| 5003281 | Electrical fuse with self-centering fuse element and method for manufacture thereof A cylindrical cartridge-type fuse has terminal end caps configured to provide insertion-limiting shoulders arresting the movement of the insulating fuse housing sleeve into the caps during assembly, and further configured with solder-retaining wells havin... | 03/26/1991 |
| 5001451 | Sub-miniature electrical component A sub-miniature fuse for electrical protection includes an assembly of an outer tube and an inner tube made of insulating material. The inner tube has electrodes and a fusible metal link sputtered onto its outer surface. The assembly of inner and outer tu... | 03/19/1991 |
| 4998085 | Front surface grid for thermostat subbase A thermostat subbase has a conductive grid located on a first surface of an insulating base. Terminals for connection to the controlled heating and cooling apparatus and terminals for connection to a thermostat are integrally formed from the conductive gr... | 03/05/1991 |
| 4996509 | Molded capless fuse A miniature end capless fuse comprises a nonconductive sleeve with a fusible element extending through it and leads to the ends of the fuse wire. Each electric lead to the fuse wire includes a deformed region near its end, but located outside the sleeve, ... | 02/26/1991 |
| 4996507 | CT quick change assembly and force transmitting spacer A molded case circuit breaker is provided with a quick change current transformer assembly. The current transformer is used to sense overcurrent conditions and apply a signal to an electronic trip unit to trip the circuit breaker. The quick change assembl... | 02/26/1991 |
| 4992770 | Fuse with improved spring timer The dual element time delay fuse includes a circuit overload trigger which opens the fuse in response to long term medium circuit overloads, and a short circuit strip disposed in a solid matrix filler for opening the fuse in response to the presence of a ... | 02/12/1991 |
| 4990882 | Push-button actuated overload protection switch A push button actuated excess current protection switch, particularly an on-board electrical system protection switch with manual actuation and bimetal controlled automatic tripping includes a switch latch (7) actuated by the push button (41) and a bimeta... | 02/05/1991 |
| 4990883 | Actuator which can be locked when exposed to a high temperature An actuator such as an electrical switch which responds to an event such as a change in temperature by movement of an element between first and second positions, for example in which an electrical circuit is open and closed respectively, includes a dimens... | 02/05/1991 |
| 4990874 | Core and contact assembly for a coaxial engine starter A core and contact assembly for a solenoid switch in which a circumferential belt-shaped attractive force generating portion is formed on one surface of a core, a recess is formed in the attractive force generating portion, a removed portion is also forme... | 02/05/1991 |
| 4988969 | Higher current carrying capacity 250V subminiature fuse A subminiature fuse is disclosed comprising two terminals (20, 30), two substrates (80, 90), a fusible conductor (140), an insulating coating (180), and a unitary housing (170). The unitary housing is protected from the interrupt arc by the substrates (80... | 01/29/1991 |
| 4987396 | Electromagnetic switch, in particular for starting devices of internal-combustion engines An electromagnetic switch comprising primary current contacts having rounded contact surfaces inclined to the longitudinal axis of the electromagnetic switch, and a rotatable contact bridge having a spherical contact surface with a radius of curvature whi... | 01/22/1991 |
| 4984123 | Latching switching device having current responsive release A push-push (make-break) switch (43) including a thermally operated circuit breaker release is adapted for controlling an electric motor (42). The switch (43) may be employed by itself or used in conjunction with a standard control switch (41) connected t... | 01/08/1991 |
| 4978812 | Electromagnetic wave shielding transparent body An electromagnetic wave shielding transparent body comprising one or more transparent sheets, a transparent conductive layer formed as a first electric conductor on at least one of said transparent sheets, and a second electric conductor separated from sa... | 12/18/1990 |
| 4978937 | Spacer for thermostat stack A thermostatic switch has a pair of contact strips separated by an insulative separator, with the separator and strips placed within a recess in a stacking block. The separator has a central portion and laterally extending tabs at the ends thereof, and re... | 12/18/1990 |
| 4975665 | Remote-controlled circuit breaker A remote-controlled circuit breaker has an operation mechanism unit (300), for selecting one of an off state and a remote-controllable state of the circuit breaker, and a compact electromagnetic unit (200) and a movable contact (11, 12) which makes/breaks... | 12/04/1990 |
| 4975739 | Electromagnetic relay Disclosed is an electromagnetic relay. A bobbin on which a coil is wound has a plurality of projections on which end portions of the coil lead left unwound on either side thereof where the coil-winding starts and ends are wound in such a manner as to brid... | 12/04/1990 |
| 4973931 | Tripping device for circuit breakers A tripping device (1) for circuit breakers comprising a thermally influenceable wire-shaped tripping element (4) is presented, one end of which is attached to a rotatably supported tripping lever (3) which is under spring force and the other end of which ... | 11/27/1990 |
| 4973928 | Extender spring for increased magnetic trip settings A molded case circuit breaker is provided with a magnetic trip device which allow for a relatively wide range of adjustment. The magnetic trip device allows the magnetic air gap to be varied as well as the spring force on the plunger. Additionally, the ma... | 11/27/1990 |
| 4973933 | Dual control infinite switch An integral infinite switch is provided for controlling a first coil and a second coil of a radiant heating element. The integral infinite switch includes a first switch assembly for opening and closing an electrical path between a first AC electrical lin... | 11/27/1990 |
| 4973932 | Electrical fuse with coated time delay element A fuse comprises a housing filled with arc-quenching material, terminals at the opposite ends of said housing, and a fuse element assembly in the housing connected between the terminals. The fuse element assembly has at least one short circuit blowing sec... | 11/27/1990 |
| 4972165 | Electrical structural component An electrical structural component including a relay and connection contacts for connecting electrical components of the relay with respective electrical conductors of a switching or energizing circuit and at least one operating circuit, is equipped with ... | 11/20/1990 |
| 4972047 | Resistance welding of aluminium Electrodes used for spot welding of aluminium workpieces are improved by a combination of steps: (a) A roughened surface is formed on the electrode tip, preferably to an average roughness depth of 12 to 30 microns. (b) also an artificial protective coating, e.... | 11/20/1990 |
| 4972170 | High speed fuse The high speed fuse employs stamped end bell and terminals rather than forged or machined parts. A slot for the terminal is punched through the end bell. The terminal is inserted into the slot in the end bell and staked in position. This insures a strong ... | 11/20/1990 |
| 4972169 | Spiral wound sand fuse A spiral wound sand fuse has a non-reactive fiber core permitting use of the fuse to interrupt high fault currents in high voltage circuits.... | 11/20/1990 |
| 4970485 | Snap action thermal actuator A snap action thermal actuator utilizes a pair of mechanically coupled bimetallic members having different temperature characteristics to provide a fast and positive snap action thermal actuator even when a low temperature differential is required. The ac... | 11/13/1990 |
| 4970624 | Electronic device employing a conductive adhesive An electronic device which includes a circuit sheet having a conductive path thereon. An adhesive is deposited on the conductive path, the adhesive including a nonconductive base incorporating randomly spaced conductive particles. A circuit component is f... | 11/13/1990 |
| 4970484 | Composite elastomer-tipped tubular metallic device for armature and needle valve applications A composite elastomer-tipped tubular metallic device for armature and check valve applications has a hollow tubular metal body and a generally spherical elastomer ball fitted into an end of the body so as to project outwardly beyond the body end. Also, th... | 11/13/1990 |
| 4968963 | Thermostat with pilot light switch A thermostat for controlling the electrical heating element of an appliance has a user-activated control shaft for controlling the overall operation of the appliance. The thermostat includes a first switch controllable by a temperature sensing element for... | 11/06/1990 |
| 4968962 | Thermal cutoff and resistor assembly A thermal cutoff and a heating resistor are assembled in heat transfer relationship with one another by a metal clip. The assembly is mounted on a base of dielectric material. Electric leads on the thermal cutoff and resistor extend through holes in the b... | 11/06/1990 |
| 4965545 | Shape memory alloy rotary actuator A rotary actuator which provides a differential pulley pair having a shape memory alloy wire. The shape memory alloy wire is thermally cycled through its phase change transition temperature and contracts. Tension forces applied by the ends of the wires to... | 10/23/1990 |
| 4962977 | Electric fuse An electric fuse constructed of a subassembly including a blown-fuse preassembly. The preassembly includes a stationary structure including an indicator housing having a chamber therein, an indicator pin mounted in the chamber for movement from a nonindic... | 10/16/1990 |
| 4963850 | Thermal withstand capability of a filament wound epoxy fuse body in a current-limiting fuse A fuse body encloses a fuse element of a current-limiting fuse wherein the fuse body is formed from an inexpensive material and provided with a shield between the inner surface of the fuse body and the fuse element. Thus, when the fuse element melts and a... | 10/16/1990 |
| 4962363 | Surface mountable leadless fuse A surface mountable leadless fuse generally includes a tubular fuse sub-assembly with an insulating body molded thereto in intimate sealing relation. The tubular fuse sub-assembly includes a nonconductive tubular housing, cup-shaped metal end caps enclosi... | 10/09/1990 |
| 4961063 | Fuse tube for power and cutout fuses A fuse tube is provided for cutout and power fuse assemblies. The fuse tube has a body with a red retroreflective portion and a white retroreflective portion. When conducting the red portion lies above the white portion. When the fuse blows, the white por... | 10/02/1990 |
