Electrical resistors – Incased – embedded – or housed – Element in insulation with outer metallic sheath
Patent
1977-07-20
1979-04-03
Envall, Jr., R. N.
Electrical resistors
Incased, embedded, or housed
Element in insulation with outer metallic sheath
13 25, 338283, 338284, 338295, 219552, H05B 300
Patent
active
041478886
ABSTRACT:
An electric heating element for electric resistance furnace comprises a plurality of heater frames which consist of conductive strip material having a sectional shape selected from leg angle-section, channel-section, lip-section, T-section, U-section, V-section, I-section, H-section, Z-section, and W-section and having electric resistance. The heater frames have a configuration coinciding with a sectional shape of an inner wall of a heating chamber of the furnace, and are made and arranged to have an opening portion. Conductive connecting rods are adapted to connect both ends of each of said heater frames to alternatively adjacent ends of adjacent heater frames so as to constitute a single wire resistance body of said heater frames, and a conductive rod connected with one end of said wire resistance body is arranged to pass through said opening portion of said heater frames and facing a power source terminal together with the other end of said wire resistance body. The electric heating element is arranged at a position in a heating chamber without inserting ceramic supports and does not deform at high temperature without good reason.
REFERENCES:
patent: 1432442 (1922-10-01), Collins
patent: 1864334 (1932-06-01), Baily
patent: 1901499 (1933-03-01), Fahrenwald
patent: 1928142 (1933-09-01), Trent et al.
Adams Bruce L.
Burns Robert E.
Envall, Jr. R. N.
Lobato Emmanuel J.
LandOfFree
Electric heating element for electric resistance furnaces 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 heating element for electric resistance furnaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric heating element for electric resistance furnaces will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1747765