Dial-type timer device

Details Dial-type timer device Dial-type timer device

1994-06-21

1995-03-21

Miska, Vit W.

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

200 38R, 200 38A, G04F 800, H01H 708

Patent

active

054003024

ABSTRACT:
A dial-type timer device having a timer body and a dial on a face of the timer body. A cover, including a locking pawl, is placed on the face of the timer body so that the dial protrudes through a hole therein. A setting ring is mounted on the dial and engages the locking pawl at a selected location to repeatedly set the time. Alternatively, two setting rings, each including a tooth on its outer periphery, are mounted on the dial to limit the range of rotation of the dial. Also, in a timing circuit of the timer, a dummy resistor of substantially the same impedance as an output relay, with its own switching element is connected in series with the output relay. By switching current alternatively through the output relay and the dummy resistor, fluctuation of current in the circuit is minimized and stable power is supplied to the time-limit circuit.

REFERENCES:
patent: 3693119 (1972-09-01), Nakama et al.
patent: 3814309 (1974-06-01), Ramstetter
patent: 3823547 (1974-07-01), Hulterstrum et al.
Patent Abstracts of Japan vol. 10, No. 247 (p. 490), Aug. 1986.

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