Tunable inductor coil

Details Tunable inductor coil Tunable inductor coil

1977-12-27

1978-11-28

Kozma, Thomas J.

Inductor devices

Relatively movable core and coil

Telescoping magnetic body and coil

85DIG2, 85 32V, 138178, 264156, 428 36, 428132, H01F 2106

Patent

active

041278364

ABSTRACT:
A tunable inductor formed with a hard plastic tubular member having a low coefficient of friction. A length of wire is conventionally coiled about the outer surface of the tube or tubular member. A threaded tuning element is positioned in the tubular member. Holes formed in the wall of the tubular member each define a permanently deformed segment of the wall, with the segments projecting inwardly a distance sufficient to engage the threads of the tuning element. The thread engaging segments function as threads to engage and secure the tuning element. The holes in the wall of the tubular member are preferably filled with an epoxy plastic or the like. In a modification the tubular member is formed with deforming holes and preferably filled with cement to function as a strip proof or strip resistant nut.

REFERENCES:
patent: 2580661 (1952-01-01), Daniels
patent: 2584723 (1952-02-01), Mackey
patent: 2648031 (1953-08-01), Lang et al.
patent: 3753352 (1973-08-01), McNally
patent: 4010298 (1977-03-01), Angle

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