1
Wells Whitney, Brian Kennedy, Chester Sandberg: Self-regulating heater employing reactive components. Raychem Corporation, Timothy H P Richardson, Herbert G Burkard, July 18, 1989: US04849611 (330 worldwide citation)

Novel electrical heater which are self-regulating as a result of appropriate combination of a constant current or constant voltage power source with a resistive heating component and a temperature-sensitive component. Preferred heaters comprise a plurality of heating units, each of which heating uni ...


2
Kevin J Friel: Electrical devices comprising conductive polymers. Raychem Corporation, Marguesite E Gerstner, Timothy H P Richardson, Herbert G Burkard, November 21, 1989: US04882466 (276 worldwide citation)

An electrical device includes a laiminar resistive element which exhibits PTC behavior and two electrodes which exhibit ZTC behavior. The electrodes have a geometry which results in a resistance that is greater than the resistance of the resistive elements. The electrical device, which may be a heat ...


3
Robert W Fouts Jr, Andrew N S Au, Burton E Miller, Alan J Gotcher: Conductive polymer compositions and devices. Raychem Corporation, Timothy H P Richardson, Herbert G Burkard, October 8, 1985: US04545926 (224 worldwide citation)

Conductive polymer compositions comprises a polymeric material having dispersed therein (a) conductive particles composed of a highly conductive material and (b) a particulate filler. The compositions exhibit a positive temperature coefficient of resistivity and undergo a large increase in resistivi ...


4
Erwin K E Stanzel, Chester L Sandberg: Sheet heater. Raychem Corporation, Timothy H P Richardson, Herbert Burkard, March 22, 1988: US04733057 (197 worldwide citation)

A wall, floor or ceiling heater comprises a plurality of self regulating, preferably PTC conductive polymer, heater elements each of which is connected to two or more connection elements. The elements are held by a support. In a preferred embodiment the heater elements are positioned parallel to eac ...


5
Michael H McTeigue, Art Zias: Methods and apparatus for sports training. SportSense, Timothy H P Richardson, December 13, 1994: US05372365 (195 worldwide citation)

A method and apparatus for training a user to move in a desired movement pattern, especially for training a golfer to swing a golf club. One or more sensors are placed adjacent the user, for example pressure sensors under the user's feet and/or between the user's hands and a golf club. The sensors g ...


6
Chester L Sandberg: Method of monitoring a heater for faults. Raychem Corporation, Timothy H P Richardson, Herbert G Burkard, October 6, 1987: US04698583 (178 worldwide citation)

Method for monitoring the electrical integrity of a heater and a novel heater for use in such a method. The heater includes an elongate heating member; an insulating jacket which encloses the heating member; a first electrically conductive member which surrounds the insulating jacket; a separating a ...


7
Chester L Sandberg: Method for monitoring a heater. Raychem Corporation, Timothy H P Richardson, Herbert G Burkard, November 15, 1988: US04785163 (170 worldwide citation)

Method for monitoring the electrical integrity of a heater and a novel heater for use in such a method. The heater includes an elongate heating member; an insulating jacket which encloses the heating member; a first electrically conductive member which surrounds the insulating jacket; a separating a ...


8
Daniel Chandler, Nelson H Thein, Edward F Chu: Conductive polymer composition. Raychem Corporation, Herbert G Burkard, Marguerite E Gerstner, Timothy H P Richardson, January 3, 1995: US05378407 (137 worldwide citation)

A conductive polymer composition which has low resistivity and good electrical stability. In one aspect the composition comprises a nonconductive filler which is a dehydrated metal oxide. In another aspect the composition comprises a conductive filler which is metal particles in which the bulk densi ...


9
Timothy E Fahey, William D Carlomagno, Andrew N Au: Composite circuit protection devices. Raychem Corporation, Timothy H P Richardson, Herbert G Burkard, October 25, 1988: US04780598 (117 worldwide citation)

Circuit protection devices which comprise a PTC conductive polymer element and a second electrical component which is thermally coupled to the PTC element and which, when a fault causes the current in the circuit to become excessive, generates heat which is transferred to the PTC element, thus reduc ...


10
Lothar Kleiner, Martin Matthiesen: Electrical devices containing conductive polymers. Raychem Corporation, Timothy H P Richardson, Herbert G Burkard, August 25, 1987: US04689475 (108 worldwide citation)

Electrical devices which comprise at least one metal electrode and a conductive polymer element in contact therewith, wherein the metal surface which contacts the conductive polymer has a roughened or otherwise treated surface to improve its adhesion to the conductive polymer. The metal electrode is ...