Adjusting knob device for electrical instruments and the like

Details Adjusting knob device for electrical instruments and the like Adjusting knob device for electrical instruments and the like

1978-01-23

1979-05-08

Yasich, Daniel M.

192 clutches and power-stop control

Clutches

Operators

74553, 361288, F16D 2300, G05G 1100

Patent

active

041531493

ABSTRACT:
A sealed adjusting device for mounting in the wall of a sealed instrument housing that includes at least one adjustable element, such as a potentiometer. The adjusting device comprises an elongated sleeve-like mounting hub capable of being sealingly secured in the housing wall, and a normally freely rotatable or freely turnable knob structured as a hollow capsule rotatably inserted onto one end of the mounting hub. The other end of the mounting hub receives or is connected with a portion of the adjustable element. A spring is provided within the mounting hub to hold the knob in its freely turnable or rotatable position. The knob is operatively connected with a clutch-sleeve for temporary engagement with the rotatable operating end of the adjustable element when the knob is pushed against the spring. The knob has a recessed portion fitted with the corresponding outer end portion of the mounting hub and an O-ring is provided between the knob and the mounting hub so as to seal the device and to protect the interior components from contact with water or other contaminants.

REFERENCES:
patent: 2704466 (1955-03-01), Way
patent: 2809262 (1957-10-01), Protz
patent: 2927168 (1960-03-01), Brown
patent: 2968779 (1961-01-01), Goode et al.
patent: 2984726 (1961-05-01), Roeser
patent: 3333079 (1967-07-01), Michaelson, Jr.
patent: 3384727 (1968-05-01), Zarertnik et al.
patent: 3528315 (1970-09-01), Marquis
patent: 3797630 (1974-03-01), Zilkha
patent: 3986409 (1976-10-01), Tripp et al.

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