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Arthur Emmett Phones & Addresses
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1912 Echo Ln, Lincoln, CA 95648 (916) 408-4887
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965 Chehalis Dr, Sunnyvale, CA 94087 (408) 735-9444
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965 Chehalis Dr, Sunnyvale, CA 94087
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Food Preparation and Serving Related Occupations
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Arthur Emmett (Judge)
Us Patents
Conductive Polymer Device With Fuse Capable Of Arc Suppression
View pageUS Patent:
59252766, Jul 20, 1999
Filed:
Jun 7, 1995
Appl. No.:
8/471893
Inventors:
Neville S. Batliwalla - Foster City CA
Arthur F. Emmett - Sunnyvale CA
Brian S. Larkin - Moss Beach CA
Arthur F. Emmett - Sunnyvale CA
Brian S. Larkin - Moss Beach CA
Assignee:
Raychem Corporation - Menlo Park CA
International Classification:
H05B 300
US Classification:
219553
Abstract:
A melt-extrudable conductive polymer composition which contains a polymer, a particulate conductive filler, and a particulate nonconductive filler. When a standard strip heater is made from the composition and tested in a UL VW-1 test, it has comparable performance to a heater made from a second composition which is the same as the composition but which does not contain the nonconductive filler. When tested in a standard arcing fault test, the standard heater will trip a fuse in less time than is required by the second heater, i. e. in less than 30 seconds. In some embodiments, the composition also comprises a flame retardant, preferably a halogenated flame retardant. When strip heaters prepared from these compositions are tested in a standard arc propagation test, an arc will not propagate. A preferred nonconductive filler is Sb. sub. 2 O. sub. 3.