Patents by Inventor Dennis C. Siden
Dennis C. Siden has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 5066104Abstract: An electrical apparatus having a liquid crystal fault indicator, comprising: an electrical component subject to electrical fault; a smectic liquid crystal display having an indicating element having a first and a second visual state, said indicating element being capable of transitioning from the first to the second visual state upon the application of an electric field sufficient to realign the smectic liquid crystal material contained therein and remaining in the second visual state after the removal of the electric field and further being capable of transitioning from the second to the first visual state upon heating to at least a delatching temperature Td sufficient to destroy the electric field induced alignment of the smectic liquid crystals; and fault signal means for providing, upon the occurrence of a fault, a prescribed input sufficient to cause said indicating element to transition from a visual state indicative of an unfaulted condition to a visual state indicative of a faulted condition.Type: GrantFiled: March 25, 1988Date of Patent: November 19, 1991Assignee: Raychem CorporationInventors: Manoochehr Mohebban, Wayne Montoya, Robert Parker, Dennis C. Siden
-
Patent number: 4900877Abstract: This invention provides E.M.I. gaskets for electrically shielding and environmentally sealing the space between two surfaces which comprises a metallic electrically conductive deformable structure adapted for forming electrical contact with said surfaces and/or providing electrical shielding in the space between said surfaces; and a gel material for sealing the space between said surfaces having a cone penetration value of about 100 to about 350 (10.sup.-1 mm) and an ultimate elongation of at least 200% and being present in sufficient amount and positioned to provide environmental seal between said surfaces and to provide environmental protection for said metallic structure. The gel may encapsulate the entire metallic structure so that portions of the metallic structure pierces through the gel when the gasket is installed to make electrical contact.Type: GrantFiled: July 12, 1988Date of Patent: February 13, 1990Assignee: Raychem CorporationInventors: Robert S. Dubrow, Christine J. Holland, Randolph W. Chan, Albert R. Martin, Dennis C. Siden, Paul B. Germeraad
-
Patent number: 4650228Abstract: A heat recoverable coupling assembly for substrates having a relatively rigid outer wall, which includes a connector body and a driver member made from a band of heat recoverable material. The connector body includes a mating area for engaging a mating area on the rigid wall of the substrate. The connector body is positioned inside or outside the substrate and the driver member is positioned around the outside member. The driver member has an unrecovered transverse dimension larger than the outside member and a recovered transverse dimension smaller than the outside member. The driver member is positioned around the outside member over at least part of the mating areas. Upon heating the driver member to its recovery temperature, the driver member deforms the outside member and itself plastically deforms to a shape suitable for retaining the substrate and the connector body together. The driver member is made from heat recoverable engineering plastics.Type: GrantFiled: December 10, 1985Date of Patent: March 17, 1987Assignee: Raychem CorporationInventors: Corey J. McMills, Dennis C. Siden
-
Patent number: 4628989Abstract: Recovery of a heat recoverable article can be carried out without a flame by wrapping around the article a flexible bag and introducing into the bag a liquid of sufficient temperature and heat capacity. Uniform recovery is ensured by maintaining a pressure within the bag so it conforms to the changing size or shape of the recovering article.Type: GrantFiled: May 24, 1982Date of Patent: December 16, 1986Assignee: Raychem CorporationInventors: Robert Parker, Thomas D. Ratzlaff, Dennis C. Siden
-
Patent number: 4544802Abstract: There is disclosed a circuit change pin and a circuit board assembly. The circuit change pin is a termination post which is held in a compliant electrically insulating base. The base is made from a heat-recoverable material which is preferably a poly(aryl ether ketone). When the circuit change pin is used in conjunction with a printed circuit board, there is then a circuit board assembly.Type: GrantFiled: June 29, 1984Date of Patent: October 1, 1985Assignee: Raychem CorporationInventor: Dennis C. Siden
-
Patent number: 4208788Abstract: A method for splicing electrical wires uses a crimp barrel removably disposed in an insulating sleeve. A first wire is inserted into the barrel, and then the barrel is removed from the sleeve without damaging the sleeve. A second wire is inserted into the barrel and the barrel is crimped to retain the wires. Then the crimp barrel is placed into the sleeve.Type: GrantFiled: January 18, 1979Date of Patent: June 24, 1980Assignee: Raychem CorporationInventor: Dennis C. Siden
-
Patent number: 4196308Abstract: An insulated electrical crimp splicer comprising a crimp barrel disposed in an insulating sleeve. The sleeve is adapted to retain the crimp barrel therein but the barrel may be removed from the sleeve to permit crimping of the barrel onto electrical conductors.Type: GrantFiled: January 28, 1976Date of Patent: April 1, 1980Assignee: Raychem CorporationInventor: Dennis C. Siden
-
Patent number: 4121338Abstract: A wire cutting device having a blade angle of about 0.degree. - 8.degree. preferably in the range of 4.degree. - 6.degree. and whose blades exhibit a bulk resistivity of at least about 1.0 ohm-cm can be used to safely sever plural conductors while inservice without causing a short circuit. Blade materials are typically polymeric materials with a Rockwell hardness of about M30 or greater.Type: GrantFiled: April 27, 1977Date of Patent: October 24, 1978Assignee: Raychem CorporationInventors: Dennis C. Siden, Corey J. McMills
-
Patent number: 4049334Abstract: A device for preparing an insulated conductor and connecting the insulated conductor to a circuit board of the type having termination holes therein. An elongate pin sized to closely fit in the appropriate termination hole is employed to simultaneously cut the insulated conductor to length, strip a portion of the insulation therefrom and position the resulting stripped conductor tightly between the pin and the termination hole. The pin includes an abrupt transverse edge which cooperates with the upper edge of the termination hole to shear an insulated conductor interposed therebetween. Located on the other side of the pin is an elongated channel running longitudinally along the pin. The elongated channel also cooperates with the termination hole to strip the insulation from the trimmed conductor and hold the stripped wire tightly in the channel through the forced insertion of the pin in the appropriate termination hole.Type: GrantFiled: January 28, 1976Date of Patent: September 20, 1977Assignee: Raychem CorporationInventor: Dennis C. Siden
-
Patent number: 4023272Abstract: A wire cutting device having a blade angle of about 0.degree. and whose blades exhibit a bulk resistivity of at least about 1.0 ohm-cm can be used to safely sever plural conductors while in-service without causing a short circuit. Blade materials are typically polymeric materials with a Rockwell hardness of about M30 or greater.Type: GrantFiled: September 25, 1975Date of Patent: May 17, 1977Assignee: Raychem CorporationInventors: Dennis C. Siden, Corey J. McMills