Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7102101 | High voltage circuit breaker with internal tank heater A high voltage circuit breaker with a gas-insulated tank is provided. Enclosed with the tank is an elongated heater having at least one heating element enclosed in an outer tube. The heater is located coaxially within the tank and is surrounded by the insulating gas... | 09/05/2006 |
| 7026906 | Circuit breaker A circuit breaker has a housing in which two conductive plates, a bimetallic strip and a swing plate with a U-shaped notch are retained, wherein a switch is mounted at the top of the housing. Each conductive plate has an end protruding from a bottom of the body. The... | 04/11/2006 |
| 6992559 | Overload protection switch An overload protection switch has a conductor interconnecting the first primary leg and a second primary leg so that when current passes through the switch, the current not only raises the temperature of the bi-metal plate, but also raises the temperature of the con... | 01/31/2006 |
| 6940031 | Switching device A switching device in which the intermediate part of shape-memory-alloy wire (17) is retained by actuator (9) connected to one end of link mechanism (4), and both ends of shape-memory-alloy wire (17) are fixedly retained by printed-circui... | 09/06/2005 |
| 6577223 | Thermal protector A first contact portion 10a is projectingly provided at a part of a first terminal 10 in the direction so as to intersect a bimetal plate 90, and a second contact portion 20a is projectingly provided at a part of a second terminal 20 so as to be opposed t... | 06/10/2003 |
| 6525640 | Resistive thermostat for electrical motors protection A resistive thermostat for Motors protection against electrical overcurrents and overtemperature, having a rectangular prismatic body, with a front side cover, and a back side face being provided with a corner lowering having a spherical sector shape, as ... | 02/25/2003 |
| 6249210 | Switch having an insulating support A switch has an insulating support on which a first and a second external terminal are arranged, and a temperature-dependent switching mechanism that, as a function of its temperature, makes between the first and the second external terminal an electrical... | 06/19/2001 |
| 6249211 | Temperature-dependent switch having a current transfer member A temperature-dependent switch 10 has a temperature-dependent switching mechanism 11; a housing 12, receiving the switching mechanism 11 and having a lower part 14 and an upper part 15; and two stationary contacts 31, 32, provided on the upper part 15 on ... | 06/19/2001 |
| 6181233 | Temperature-dependent switch A temperature-dependent switch has two connection electrodes mounted on an insulating support as well as a switching mechanism that, as a function of its temperature, creates an electrically conductive connection between the two connection electrodes. Als... | 01/30/2001 |
| 5973587 | Temperature-dependent switch having a contact bridge A temperature-dependent switch has a temperature-dependent switching mechanism and a housing, receiving the switching mechanism, that has a lower part and an upper part made of insulating material. On the inner side of the upper part there are two station... | 10/26/1999 |
| 5936510 | Sealed case hold open thermostat A thermostat includes a case having a sealed interior and an exterior. A contact extends from the sealed interior to the exterior. The contact is fixed with respect to the casing and has an interior contact position. A first blade extends from the sealed ... | 08/10/1999 |
| 5712609 | Micromechanical memory sensor A micromechanical memory sensor. The sensor comprises a latch member mechanically latching upon detection of a threshold value of a variable condition and circuitry for detecting such latching. A sensor further includes a resetting mechanism for electrica... | 01/27/1998 |
| 5265521 | Toast shade selector A toast shade selector includes a rotatable shaft interposed between aligned openings in upstanding plates of a mounting bracket. A cam on the shaft is rotated in the clockwise or counter-clockwise direction to regulate the toasting time intervals. A spri... | 11/30/1993 |
| 5214405 | Miniature circuit-breaker with remote tripping A miniature circuit-breaker includes at least one thermal trip element, which includes a force translator which causes switching contacts to open. The force translator may be a breaker mechanism. The thermal trip element works with a thermally sensitive e... | 05/25/1993 |
| 4771258 | Molded case circuit breaker bimetal with high calibration yield A molded case circuit breaker bimetal trip unit arrangement substantially reduces the variation in trip characteristics between circuit breakers employing the improved bimetal. The number of circuit breakers failing the in-line calibration test is corresp... | 09/13/1988 |
| 4695814 | Circuit breaker A circuit breaker having a thermal tripping device comprising a bimetal element and a heater has a holding member attached to the stationary part of the bimetal element, for holding the bimetal element and the heater at respective first end parts thereof.... | 09/22/1987 |
| 4630019 | Molded case circuit breaker with calibration adjusting means for a bimetal A molded case circuit breaker includes a new and improved calibration adjusting means for a bimetal in a trip mechanism. The trip mechanism also includes a bimetal having a portion movable in response to predetermined overload conditions, an intermediate ... | 12/16/1986 |
| 4617545 | Submersible primary circuit breaker A primary power circuit breaker adapted to be immersed in the dielectric fluid for a transformer, the breaker including an arc interrupting assembly for extinguishing the arc produced on load break; a trip free mechanism responsive to primary, secondary o... | 10/14/1986 |
| 4570143 | Thermally actuated variable-rating circuit breaker having selectively connectable heater elements A pair of heaters (16,18) are mounted within a breaker housing (2) in spaced relation to a temperature responsive actuator element (30) for indirectly heating that element in response to current flow in the heaters. Each heater is provided with a wiring t... | 02/11/1986 |
| 4505291 | Heat sensitive fire safe valve energy assist device Disclosed is a heat sensitive fire-safe valve energy assist device. The device includes a cup that is mountable exterior of the valve body to transmit forces thereto. The device also includes a pusher that is mountable about the valve stem to transmit for... | 03/19/1985 |
| 4419649 | Circuit breaker for use on AC and DC circuits A circuit breaker suitable for use on both AC and DC circuits includes a magnetically permeable core surrounding a current carrying conductor of the circuit breaker. A bimetal member is thermally coupled to the core such that induction heating of the core... | 12/06/1983 |
| 4069464 | Bimetal overload relay A U-shaped heater unit is surrounded by a U-shaped bimetal, the legs of which move in response to temperature variations. The motion of the bimetal is conveyed through a wall by a slidable pin which acts to rotate an L-shaped compensator element. This rot... | 01/17/1978 |
| 3932829 | Excess current switch This invention relates to an excess current switch. Such a switch includes a housing, a contact bridge, a bimetal strip for providing a thermal trip, switch actuating means and a slide bar. These components are arranged in a simple and space saving manner... | 01/13/1976 |
