Anti-rotational device for a cam-operated timer

Details Anti-rotational device for a cam-operated timer Anti-rotational device for a cam-operated timer

1992-02-18

1993-06-15

Miska, Vit W.

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

200 38R, 200 38A, 200 38B, B04F 800, H01H 4300, H01H 4312

Patent

active

052205428

ABSTRACT:
An anti-rotational device for a cam-operated timer is used in appliances with timer control knobs that recess when the appliance is operating. A spring biased axially displaceable shaft that carries a circular disc having teeth peripherally disposed around its circumference is provided. When the shaft is axially displaced by pressure on the timer control knob, the teeth on the circular disc engage raised tabs on the timer's housing, and the engagement prevents the shaft from rotating.

REFERENCES:
patent: 3735062 (1973-05-01), Chestnut et al.
patent: 4346271 (1982-08-01), Cushing
patent: 4348560 (1982-09-01), Ray et al.
patent: 4889964 (1989-12-01), Pea et al.
patent: 4983790 (1991-01-01), Bogda et al.

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