Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1976-04-01
1977-05-17
Weldon, Ulysses
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
58 23BA, 200 6152, G04B 1934
Patent
active
040233464
ABSTRACT:
A wristwatch of the digital type in which there is switch means including a movable member visible from the front of the watch and in which the movable member has to be manipulated deliberately into a predetermined position in order for the switch means to cause energization of the digital display on the watch. The watch is preferably provided with two transparent front walls between which the switch means is located. The movable member may take the form of a ball or other conductor member which is moved into engagement with spaced contacts when the watch is moved to a normal position for viewing and the ball is manipulated, while the watch is in that position, into engagement with the contacts. In one form of the invention, a mercury globule is used instead of a ball. Moreover, instead of having open contacts, the movable member may be a ball which is effective when manipulated to the predetermined position to engage the plunger of a precision snap switch and cause closure of the switch.
Any of several means are provided for requiring deliberate manipulation of the movable member to the predetermined position in the inner front wall. For example, in one form of the invention, there is a circular rim surrounding the contacts over which rim the movable member must be manipulated in order to engage the contacts. In another form of the invention, the rim has at least one opening therein of a size to allow manipulation of the ball or other movable member into the predetermined position. In still another form of the invention, the inner front surface is simply raised slightly around a predetermined position on the inner front wall.
REFERENCES:
patent: 3466045 (1969-09-01), Walton
patent: 3871170 (1975-03-01), Bergey
patent: 3963885 (1976-06-01), Brien
patent: 3974638 (1976-08-01), Haber
patent: 3983690 (1976-10-01), McClintock
Lange Frederick E.
Weldon Ulysses
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