Switching mechanism for alarming time detection in an alarming d

Details Switching mechanism for alarming time detection in an alarming d Switching mechanism for alarming time detection in an alarming d

1975-04-04

1977-08-30

Scott, James R.

Electricity: circuit makers and breakers

Retarded

Clock train

58 19A, 58 38R, H01H 4310, G04B 2310, G04C 2136

Patent

active

040456277

ABSTRACT:
An electrical switch device for detecting preset alarm times in an alarming device comprises a one-piece switch part connected to and rotatable with a rotationally driven time wheel, and first and second fixed switch parts electrically insulated from each other. An alarming circuit is electrically connected to the fixed switch parts and sounds an audible alarm when the switch parts are closed. An alarm time setting mechanism is settable in a predetermined angular position corresponding to the alarm time to be detected so that when the time wheel is driven to the predetermined position, the switch parts are closed thereby activating the alarm.

REFERENCES:
patent: 2611232 (1952-09-01), Wuischpard
patent: 2799740 (1957-07-01), Blackman
patent: 3339034 (1967-08-01), Deladerriere
patent: 3409748 (1968-11-01), Kawata
patent: 3558834 (1971-01-01), Zielke
patent: 3685280 (1972-08-01), Fehrenbacher
patent: 3819886 (1974-06-01), Homan et al.
patent: 3996734 (1976-12-01), Kitai et al.

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