Source: http://www.google.com/patents/US4845343?dq=3657699
Timestamp: 2015-05-07 06:46:32
Document Index: 674380124

Matched Legal Cases: ['Application No. 38', 'application No. 38', 'application No. 38', 'application No. 63', 'application No. 67', 'application No. 74', 'application No. 84', 'application No. 84', 'application No. 84']

Patent US4845343 - Electrical devices comprising fabrics - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn electrical heater which includes a fabric prepared from electrodes and an elongate resistive heating element which is composed of a conductive polymer, preferably a PTC conductive polymer, to render the heater self-regulating. The fabric is laminated to, and preferably embedded in, a sheet of an insulating...http://www.google.com/patents/US4845343?utm_source=gb-gplus-sharePatent US4845343 - Electrical devices comprising fabricsAdvanced Patent SearchPublication numberUS4845343 APublication typeGrantApplication numberUS 07/277,521Publication dateJul 4, 1989Filing dateNov 28, 1988Priority dateNov 17, 1983Fee statusLapsedPublication number07277521, 277521, US 4845343 A, US 4845343A, US-A-4845343, US4845343 A, US4845343AInventorsTed M. Aune, Paul B. Germeraad, Randolph W. ChanOriginal AssigneeRaychem CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (23), Referenced by (33), Classifications (16), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetElectrical devices comprising fabrics
Compositions which have a positive temperature coefficient of resistance ("PTC compositions") are known. They can be composed of ceramic material, eg. a doped barium titanate, or a conductive polymer material eg. a dispersion of carbon black or other particulate conductive filler in a crystalline polymer. The term PTC is generally used (and is so used in this specification) to denote a composition whose resistivity increases by a factor of at least 2.5 over a temperature range of 14� C. or by a factor of at least 10 over a temperature range of 100� C., and preferably both. The term switching temperature (or Ts) is generally used (and is so used in this specification) to denote the temperature at which the sharp increase in resistivity takes place, as more precisely defined in U.S. Pat. No. 4,237,441. Materials, in particular conductive polymer compositions, which exhibit zero temperature coefficient (ZTC) behavior are also known. In electrical devices which contain a PTC element and a ZTC element, the term ZTC is generally used (and is so used in this specification) to denote an element which does not exhibit PTC behavior at temperature below the Ts of the PTC element; thus the ZTC element can have a resistivity which increases relatively slowly, or which is substantially constant, or which decreases slowly, at temperatures below the Ts of the PTC element. Materials, in particular conductive polymer compositions, which exhibit negative temperature coefficient (NTC) behavior are also known. For further details of conductive polymer compositions and devices comprising them, reference may be made for example to U.S. Pat. Nos. 2,952,761, 2,978,665, 3,243,753, 3,351,882, 3,571,777, 3,757,086, 3,793,716, 3,823,217, 3,858,144, 3,861,029, 3,950,604, 4,017,715, 4,072,848, 4,085,286, 4,117,312, 4,177,376, 4,177,446, 4,188,276, 4,237,441, 4,238,812, 4,242,573, 4,246,468, 4,250,400, 4,255,698, 4,242,573, 4,271,350, 4,272,471, 4,276,466, 4,304,987, 4,309,596, 4,309,597, 4,314,230, 4,314,231, 4,315,237, 4,317,027, 4,318,881, 4,327,351, 4,330,704, 4,334,351, 4,352,083, 4,361,799, 4,388,607, 4,398,084, 4,413,301, 4,425,397, 4,426,339, 4,426,633, 4,427,877, 4,435,639, 4,429,216, 4,442,139, 4,459,473, 4,481,498, 4,476,450, 4,502,929, 4,514,620, 4,517,449, 4,545,926, 4,562,313, 4,571,481, 4,574,188, 4,582,983, and 4,659,913; J. Applied Polymer Science 19, 813-815 (1975), Klason and Kubat; Polymer Engineering and Science 18, 649-653 (1978), Narkis et al; and commonly assigned U.S. Ser. Nos. 601,424 now abandoned, published as German OLS No. 2,634,999; 732,792 (Van Konynenburg et al), now abandoned, published as German OLS No. 2,746,602; 798,154 (Horsma et al), now abandoned, published as German OLS No. 2,821,799; 134,354 (Lutz), now abandoned; 141,984 (Gotcher et al), published as European Application No. 38,718; 141,988 (Fouts et al) now abandoned, published as European application No. 38,718, 141,989 (Evans), published as European application No. 38,713, 150,909 (Sopory) now abandoned, published as UK application Nos. 2,076,106A, 184,647 (Lutz) now abandoned, 250,491 (Jacobs et al) published as European application No. 63,440, 272,854 and 403,203 (Stewart et al),published as European patent application No. 67,679, 274,010 (Walty et al), 300,709 and 423,589 (Van Konynenburg et al), published as European application No. 74,281, 369,309 (Midgley et al), 483,633 (Wasley), 509,897 and 598,048 (Masia et al) published as European application No. 84,304,502.2, 534,913 (McKinley) now abandoned, published as European application No. 84,306,456.9, 552,649 (Jensen et al) now abandoned, published as European application No. 84,307,984.9, 573,099 (Batliwalla et al) and 904,736, published as UK patent Nos. 1,470,502 and 1,470,503, and the three commonly assigned applications filed Sept. 14, 1984, Ser. Nos. 650,918, 650,920 and 650,919 (MP0959, 961 and 962). The disclosure of each of the patents, publications and applications referred to above is incorporated herein by reference.
The fabric must contain at least one elongate element which comprises a component composed of a material which has sufficient resistivity, e.g. greater than 10-5 ohm�cm, particularly greater than 10-3 ohm�cm, to provide an effect which would not be obtained if the element consisted essentially of a metal. For example the component can be electrically resistive, in order to provide a heating effect; or electrically insulating (including insulating and non-tracking), to separate conductive components; or thermally responsive (e.g. heat-recoverable or thermally-activated adhesive).
A sample of the fabric was placed between two sheets of the non-tracking material, each 0.15 inch thick, leaving the edges of the fabric exposed, and the assembly was pressed at about 275� F. and a pressure of about 25 psi for about 5 minutes, thus causing the filaments and sheets of the non-tracking material to melt and coalesce into a substantially continuous matrix of the material. The resulting structure was then irradiated to a dose of about 5 Mrad.
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Automotive Systems, Ltd.Flat heating elementUS8507831May 12, 2010Aug 13, 2013W.E.T. Automotive Systems AgHeater for an automotive vehicle and method of forming sameUS8525079Aug 5, 2011Sep 3, 2013W.E.T. Automotive Systems AgFlat heating elementUS8766142Jul 12, 2013Jul 1, 2014W.E.T. Automotive Systems AgHeater for an automotive vehicle and method of forming sameUS20110068098 *Nov 24, 2010Mar 24, 2011Taiwan Textile Research InstituteElectric Heating Yarns, Methods for Manufacturing the Same and Application ThereofUS20140069540 *Sep 11, 2012Mar 13, 2014Jean Renee ChesnaisWrappable sleeve with heating elements and methods of use and construction thereofCN101331794BDec 11, 2006Mar 27, 2013W.E.T.汽车系统股份公司扁平的加热元件EP1147024A2 *Jan 24, 2000Oct 24, 2001Illinois Tool Works Inc.Self regulating flexible heaterEP1764244A2 *Jan 24, 2000Mar 21, 2007Illinois Tool Works Inc.Self regulating flexible heaterWO2000043225A2 *Jan 24, 2000Jul 27, 2000Edward BulgajewskiSelf regulating seat heaterWO2001097568A1 *Jun 15, 2001Dec 20, 2001Robin Dempsey CairdHeating insert for use with footwearWO2001097569A1 *Jun 15, 2001Dec 20, 2001D C Heat LtdHeating element for use with clothing or footwearWO2004045901A1 *Nov 13, 2003Jun 3, 2004Wet Automotive Systems AgCovered conductor and heater formed therewithWO2007065424A2 *Dec 11, 2006Jun 14, 2007Wet Automotive Systems AgFlat heating elementWO2007065424A3 *Dec 11, 2006Aug 9, 2007Wet Automotive Systems AgFlat heating elementWO2013072338A2 *Nov 14, 2012May 23, 2013Althaus Margarete FranziskaHeating element and method for producing a heating element* Cited by examinerClassifications U.S. Classification219/545, 29/611, 219/549, 219/529International ClassificationH05B3/34, H05B3/14Cooperative ClassificationH05B3/146, Y10T29/49083, H05B2203/017, H05B3/342, H05B2203/005, H05B2203/014, H05B2203/02, H05B2203/011European ClassificationH05B3/34B, H05B3/14PLegal EventsDateCodeEventDescriptionSep 4, 2001FPExpired due to failure to pay maintenance feeEffective date: 20010704Jul 1, 2001LAPSLapse for failure to pay maintenance feesJan 23, 2001REMIMaintenance fee reminder mailedDec 26, 1996FPAYFee paymentYear of fee payment: 8Dec 21, 1992FPAYFee paymentYear of fee payment: 4Mar 20, 1989ASAssignmentOwner name: RAYCHEM CORPORATION, A CORP. OF CAFree format text: MERGER;ASSIGNORS:RAYCHEM CORPORATION, A CORP. OF CA (MERGED INTO);MEHCYAR CORPORATION, A DE CORP. (CHANGED TO);REEL/FRAME:005175/0324;SIGNING DATES FROM 19870129 TO 19870729RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services