Electrical resistors – Mechanically variable – Movable contact electrically adjustable over length of...
Patent
1976-04-29
1978-06-13
Albritton, C. L.
Electrical resistors
Mechanically variable
Movable contact electrically adjustable over length of...
338184, 338199, 338322, 338328, H01C 1034
Patent
active
040952096
ABSTRACT:
An electrical resistor comprising a base having a resistance element supported thereon. A pair of terminals for connecting the element into an electrical circuit are bonded to the resistance element. The bond comprises a conductive thermoplastic bondable material applied to the resistance element before the terminals are secured thereto. Heat applied to the terminals causes the bondable material to flow and bond the terminals to the resistance element. In one embodiment, a rotatable knob, a contactor and a collector are assembled to the resistor to produce a variable resistance control. The knob is provided with a first skirt extending toward the base and in slideable engagement therewith. The first skirt supports the knob in spaced relationship with the base and a second skirt extends toward the resistance element carried by the base. The distal end of the second skirt is disposed proximate to the resistance element and encloses and protects the resistance element against external contaminants.
REFERENCES:
patent: 3416119 (1968-12-01), Van Banthuysen et al.
patent: 3855565 (1974-12-01), Robinson et al.
patent: 3997865 (1976-12-01), George
Hardwick Danny R.
Wiswell H. Eugene
Albritton C. L.
CTS Corporation
Gaydos John J.
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