Electricity: circuit makers and breakers – Special application
Patent
1981-06-04
1983-05-17
Scott, J. R.
Electricity: circuit makers and breakers
Special application
200156, 200308, 200316, 30DIG1, H01H 3500, B26B 1902, H01H 1914
Patent
active
043841805
ABSTRACT:
There is provided a battery-operated electrical appliance such as an electric shaver including a mechanism for counting the number of times the appliance is operated. A first switch for activating the appliance is positioned in the mechanism housing, together with a rotatably mounted member provided with indicia for indicating the number of times the first swtich has been operated. An actuating member brings the movable contact and the fixed contact of the first switch into and out of engagement with each other, the actuating member including an element for engagement with the indicating member to successively rotate the same one indicia unit each time the first switch is actuated. A second switch is associated in the housing with the indicating member and has a movable contact and a fixed contact arranged to be brought into engagement after a predetermined number of successive partial rotations of the indicating member. An indicator lamp is activated by the second switch, the indicator lamp being de-activated each time the contacts of the first switch are disengaged.
REFERENCES:
patent: 3176106 (1965-03-01), Van Den Driest
patent: 3328542 (1967-06-01), Andrews
patent: 3349211 (1967-10-01), Lien
patent: 3803372 (1974-04-01), Dijkstra
patent: 4112271 (1978-09-01), Marchetti
Hayashi Koichi
Meijer Gerald
Takaoka Mosayoshi
Briody Thomas A.
Schneider Rolf E.
Scott J. R.
Streeter William J.
U.S. Philips Corporation
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