Electric heating – Heating devices – With heating unit structure
Patent
1978-05-31
1980-09-23
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
With heating unit structure
156380, 219535, 285 21, H05B 358
Patent
active
042245052
ABSTRACT:
The disclosed sleeve is of the type including a resistance heating wire embedded in a thermoplastic sleeve material. A first sleeve member of insulating thermoplastic is molded with axially spaced integral annular receptacle wall members extending out from the outer surface and defining recesses. The walls have two diametrically opposite guide slots. Extending upwards from the center of each recess is a wire support stud. A resistance wire wound on the first sleeve between the wall members has its end sections passed through the slots and over the support stud, so that portions of the wire lie exposed against the side faces of the stud. A second sleeve member of insulating material is molded over the first sleeve so that the wire is embedded in the second sleeve but remains exposed within the recesses. The second sleeve material fills in the slots above the wire to thereby fix the wire in place in the slots. This permits a mating connector element to be inserted in the recess with its bore receiving the wire and wire support, so that electrical contact is made to the wire.
REFERENCES:
patent: 3062940 (1962-11-01), Bauer et al.
patent: 3519799 (1970-07-01), Bange
patent: 3542402 (1970-11-01), Caples et al.
patent: 3560704 (1971-02-01), Albert
patent: 3849630 (1974-11-01), Halliday
patent: 3943334 (1976-03-01), Sturm
patent: 3987276 (1976-10-01), Vogelsanger et al.
patent: 4117311 (1978-09-01), Sturm
patent: 4147926 (1979-04-01), Stahli
Mayewsky Volodymyr Y.
Von Roll AG
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