Electric heating – Heating devices – Tool or instrument
Patent
1983-09-12
1985-01-22
Bartis, A.
Electric heating
Heating devices
Tool or instrument
219235, 228 19, 228 53, B23K 302, H05B 302
Patent
active
044954034
ABSTRACT:
An unsoldering tip for an electrical apparatus for unsoldering of soldering joints and for removing the solder consists of an electrical resistance wire being designed for being connected to an electrical voltage source at its both ends and becoming heated on current flow therethrough. The resistance wire comprises two legs which partially extend in parallel relation and have there a small distance between 0.1 and 0.3 mm. Both these legs are electrically connected one with the other at one end. At that area, where both these legs extend in parallel relation and with a small distance one from the other, a bend of about 180.degree. is provided, where an enlargement of the small distance is provided to form an enlarged open area or arcuate configuration for receiving the joint to be unsoldered, with the maximum spacing between the legs in the enlarged area being between approximately 0.8 and 1.2 mm.
REFERENCES:
patent: 2012938 (1935-09-01), Beuoy
patent: 2101913 (1937-12-01), Meyer
patent: 2405866 (1946-08-01), Weller
patent: 2501192 (1950-03-01), Scholler
patent: 2935593 (1960-05-01), Fulmer
patent: 3316384 (1967-04-01), Daniels
patent: 3821513 (1974-06-01), Christensen
patent: 3881087 (1975-04-01), Nicosia
patent: 4367396 (1983-01-01), Ravinsky
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