Patents Represented by Attorney, Agent or Law Firm David Arnold
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Patent number: 6733308Abstract: A coating element for an electrical junction or circuit that reduces surface electric field densities. The coating element comprises a layer of plastic material laden within or in which there is dispersed conductive particles. The coating element surrounds the junction or circuit such that an inner layer or surface of the element is in contact with the outer layer or surface of the junction or circuit. The plastic material may be an elastomer, a polymer, a polyurethane or a silicone. The conductive particles may be a metal powder of aluminum or stainless steel or graphite. The resistivity of the coating element is between about 1 ohm-cm to about 100 kilohm-cm.Type: GrantFiled: June 19, 2002Date of Patent: May 11, 2004Assignee: GE Medical Systems Global Technology Company LLCInventor: Hans Jedlitschka
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Patent number: 6622438Abstract: A temporary support device for installing sheet material in a building construction is provided with a multitude of perpendicular surfaces and a pair of offset surfaces for temporarily supporting a variety of sheet materials in a variety of orientations. Countersunk through holes integral to the support device accept standard screw hardware for temporarily mounting the support device to the building substructure. The pair of offset surfaces provide clearance for loosely supporting the sheet material before final securement of the sheet to the building substructure. The support device may be manufactured out of lightweight material, such as, for example, aluminum, wood, or plastic, and may include cored out sections, thereby enhancing the utility and handling of the device. Materials that can be temporarily supported by the support device include, but are not limited to, sheetrock, insulation board, plywood, and particle board.Type: GrantFiled: March 1, 2001Date of Patent: September 23, 2003Inventor: Christopher Paul Hurlock
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Patent number: 6437266Abstract: A contact arm assembly is provided having an electrical contact for making and breaking an electrical current, a contact arm for supporting the electrical contact, and a bond surface on the contact arm that is conditioned for improving the bond between the electrical contact and contact arm. Also provided is an electrical circuit breaker that utilizes the improved contact arm assembly. The bond surface of the contact arm is provided with pyramid-shaped serrations that serve to more uniformly distribute the electrical current during brazing, provide multiple areas of localized current constriction during brazing, and provide collector pockets for accumulating the molten braze alloy during brazing. The uniform distribution of electrical current during brazing serves to generate a uniform temperature gradient across the braze area for uniform melting of braze alloy.Type: GrantFiled: September 22, 2000Date of Patent: August 20, 2002Assignee: General Electric CompanyInventors: Erich John Pannenborg, Joseph Criniti, Javier Ignacio Larranaga, Gerardo Rosario
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Patent number: 6429759Abstract: A contact arrangement for a circuit breaker is disclosed. The movable and the stationary contacts within the breaker are each split and angled such that one contact forms a female V cross sectional shape and the other forms a mating male V cross sectional shape. Together, these contacts split the current in a manner which reduces the popping force.Type: GrantFiled: February 14, 2000Date of Patent: August 6, 2002Assignee: General Electric CompanyInventors: Daniel Schlitz, Shridhar Nath
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Patent number: 6426688Abstract: A circuit breaker rotary contact arm is used within a plurality of single pole modules ganged together to form a single multi-pole circuit breaker. To provide for use in quiescent conditions having high ampere ratings, low ampere rated rotary contact arm assemblies are combined in parallel to form a higher rated single pole module, which are then ganged together to form a single multi-pole circuit breaker having a high quiescent ampere rating.Type: GrantFiled: May 25, 1999Date of Patent: July 30, 2002Assignee: General Electric CompanyInventors: Francesco DeVizzi, Stefan Kranz
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Patent number: 6416702Abstract: A circuit breaker assembly including a first and second circuit breakers each having toggle switch assemblies movable between ON and OFF positions. The toggle switch assemblies have connectors coupled thereto for preventing both circuit breakers from being in the ON position at the same time.Type: GrantFiled: May 5, 2000Date of Patent: July 9, 2002Assignee: General Electric CompanyInventors: Wade A. Montague, David A. Reid, J. Peter McCuin, George T. Parker, Herman Tremmel, Marshall B. Hart
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Patent number: 6369340Abstract: A rotary contact circuit breaker employs a crank to couple a switching mechanism to the rotary contact pole structure. The use of a crank allows for the mechanism and pole structure the individually optimized without effecting the performance of the other. In particular the crank allows for a mechanism that is able to achieve maximum torque delivery to the pole structure.Type: GrantFiled: March 10, 2000Date of Patent: April 9, 2002Assignee: General Electric CompanyInventors: Roger Neil Castonguay, Randall Lee Greenberg, Dave Scot Christensen