Bushing for use between a control knob and a housing

Details Bushing for use between a control knob and a housing Bushing for use between a control knob and a housing

1982-04-06

1985-01-22

Pellinen, A. D.

Electricity: electrical systems and devices

Miscellaneous

74548, 338197, H01F 1502

Patent

active

044955472

ABSTRACT:
A bushing is disclosed for protecting a printed circuit board mounted potentiometer or the like from transverse and axial loads which are applied to the potentiometer during adjustment thereof. The potentiometer or other control device has a control shaft which protrudes through a panel opening and which has a knob mounted on the distal end thereof. The bushing fits over the control shaft between the panel and the knob such that axial and radial forces applied to the knob are transmitted to the panel by the bushing. These forces are therefore absorbed by the panel rather than the attachments between the printed circuit board and the potentiometer.

REFERENCES:
patent: 1694384 (1928-12-01), Herman
patent: 1810985 (1931-06-01), Reichenbach
patent: 2154537 (1939-04-01), Stenberg
patent: 2781436 (1957-02-01), Barden
patent: 3115373 (1963-12-01), Alexander
patent: 3503586 (1970-03-01), Bordes
patent: 3572284 (1971-03-23), Rattan
patent: 3999874 (1976-12-01), George et al.
patent: 4037490 (1977-07-01), Wilson

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