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Machine translation
1. (WO1979000924) TUBULAR HEATING ELEMENT
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000924    International Application No.:    PCT/JP1979/000093
Publication Date: 15.11.1979 International Filing Date: 11.04.1979
IPC:
H05B 3/48 (2006.01)
Applicants:
Inventors:
Priority Data:
78/43663 12.04.1978 JP
Title (EN) TUBULAR HEATING ELEMENT
(FR) ELEMENT CHAUFFANT TUBULAIRE
Abstract: front page image
(EN)A tubular heating element comprising a metal pipe having housed therein a heating wire and filled with insulating material, said metal pipe being air-tightly sealed at its both opening ends. To prevent metal evaporation and diffusion which will be caused from the heating wire or the inner wall of the metal pipe at a high temperature in a reduced pressure atmosphere, the wire (8) is formed of a low vapor-pressure alloy of nickel, tungsten, molybdenum or the like. The inner wall of the metal pipe (4) is further coated with a layer of a low vapor-pressure metallic material such as nickel, tungsten, molybdenum or the like, to thereby retard the rate of insulation deterioration and improve the service life and the safety. This heating element may be widely available in home appliance and in industrial use.
(FR)Un element chauffant tubulaire comprend un tube metallique a l"interieur duquel est loge un fil chauffant et rempli d"un materiau isolant, ledit tube metallique etant ferme hermetiquement a l"air a ses deux ouvertures extremes. Pour empecher l"evaporation et la diffusion metalliques qui proviendraient du fil chauffant ou de la paroi interne du tube metallique a temperature eleve e dans une atmosphere a pression reduite, le fil (8) est forme d"un alliage a basse tension de vapeur de nickel, tungstene, molybdene, ou autre metal semblable. En outre, la paroi interne du tube metallique est revetue d"une couche d"un materiau metallique a basse tension de vapeur tel que le nickel, le tungstene, le molybdene ou autre, de maniere a retarder la deterioration de l"isolation et a ameliorer la longevite et la securite. Cet element chauffant peut etre largement utilise dans les installations domestiques et dans l"industrie.
Designated States:
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)