Settable resistor

Details Settable resistor Settable resistor

1989-04-28

1990-12-18

Reynolds, Bruce A.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338179, 338180, 338194, H01C 1038

Patent

active

049789392

ABSTRACT:
A settable resistor has a resistance path array (4) to which is allocated a contact piece (9) which is guidable in the longitudinal direction (13) over the resistance path array and has an adjusting device for the position of the contact piece. In order not to restrict the free displacement travel of the contact piece with a simple construction independent of the setting of the adjusting device, so that a high resolution is achieved particularly for application in the hand switch of a power tool with speed control regardless of a set maximum value, the contact piece (9) is additionally adjustable transverse to the longitudinal direction (13of the resistance path array (4) by means of the adjusting device (11).

REFERENCES:
patent: 1938396 (1933-12-01), Megow
patent: 3156888 (1964-11-01), Blanco
patent: 3535670 (1970-10-01), Gerwitz
patent: 3599141 (1971-08-01), Hildreth
patent: 3648217 (1972-03-01), DeLong et al.
patent: 4097704 (1978-06-01), Piber

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