Electrical resistors – Helical or wound resistance element – Element coiled on cylindrical or prismatic core
Patent
1985-03-28
1986-11-04
Bartis, A.
Electrical resistors
Helical or wound resistance element
Element coiled on cylindrical or prismatic core
219236, 219238, 219541, 219544, 338264, 338266, 338329, 338332, H05B 340, H01C 1148, H01C 320
Patent
active
046212515
ABSTRACT:
An improved electric resistance heater assembly for soldering tools, glue guns, hair dryers, heat pencils, paint removers, etc., includes, as the core of the assembly, an open-ended tube of a ceramic material having good electrical insulation properties with good thermal conductivity, low heat capacity and a high softening temperature. A conduit extends lengthwise through the wall of the tube from end to end thereof and first and second spring-tempered split metallic compression bands of smaller diameter than the tube are placed at each end of the tube and retained thereon by compressive stress. A plurality of turns of resistance wire are wound about the outer periphery of the tube between the bands with each end of the wire welded to a respective one of the bands. An first electric lead is welded to the first band. A second electric lead is welded to the second band and extends lengthwise through the conduit and exits the conduit near the first band. The assembly permits the separation of the resistance wire winding process from the electrical connection process, leading to simplicity in design and manufacturing procedures.
REFERENCES:
patent: 744974 (1903-11-01), McElroy
patent: 2041018 (1936-05-01), Persons
patent: 2398686 (1946-04-01), Zander
patent: 2402122 (1946-06-01), Bullinger
patent: 2875309 (1959-02-01), Pearce
patent: 2879361 (1959-03-01), Haymman
patent: 3248679 (1966-04-01), Ganci
patent: 3287541 (1966-11-01), Weller et al.
patent: 3707258 (1972-12-01), Schlitt
patent: 3889096 (1975-06-01), Asselman et al.
patent: 3943326 (1976-03-01), Henry
patent: 4035613 (1977-07-01), Sagawa et al.
patent: 4438322 (1984-03-01), Sylvia
patent: 4439667 (1984-03-01), Sylvia
Bartis A.
North American Philips Corp.
Snyder Eugene I.
LandOfFree
Electric resistance heater assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric resistance heater assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric resistance heater assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-698667