Electric heating – Heating devices – Tool or instrument
Patent
1987-05-08
1990-05-15
Bartis, Anthony
Electric heating
Heating devices
Tool or instrument
219229, 219241, 219373, 219379, 219381, 228 53, B23K 302, H05B 300, F24H 110
Patent
active
049260286
ABSTRACT:
A desoldering system utilizes a hot air soldering instrument which includes a hollow elongated cylindrical heating element capable of generating a high temperature. The cold input air is forced to move about the outer surface of the heating element. It is then directed to move between the inner surface of the heating element and the outer surface of an inner tube, whereby a primary and a secondary heating chamber are provided. In each heating chamber an open coil form or spring may be disposed to further increase the tortuous path of the air, and the heated air exits from the inner tube into a soldering tip from it is discharged, thus to provide a very hot air jet for soldering or desoldering purposes. Various modified instruments are disclosed for permitting either a hot air jet tip or a conventional soldering tip to be used. Also, a permanent air connection is featured in another modification to obviate the necessity of disassembling the air hose and other connections.
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patent: 3422247 (1969-01-01), Royston et al.
patent: 3560710 (1971-02-01), Fuellemann
Anderson Daniel T.
Bartis Anthony
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