Horology: time measuring systems or devices – Chronological – With simultaneous time indicating means
Patent
1986-10-01
1987-09-15
Roskoski, Bernard
Horology: time measuring systems or devices
Chronological
With simultaneous time indicating means
368238, 368262, 368269, G04B 2302
Patent
active
046936122
ABSTRACT:
An alarm mechanism for an alarm clock has an alarm hand and an hour hand mounted coaxially with respect to each other, and slideably contacting hub portions of the alarm hand and the hour hand are formed with cam grooves and cam pawls respectively. The cam grooves and cam pawls are positioned with the same positional relationship with respect to the hub portions of the alarm hand and hour hand so that at a preselected alarm time, the cam grooves and cam pawls cooperatingly engage one another to thereby actuate a mechanism to sound the alarm of the alarm clock. In attaching the hands to the clock during assembly, it is possible to attach the alarm hand and the hour hand onto respective shafts at any random angular position without having to pay special attention to the respective positional relationships of the two hands. The hands can be formed in multiple parts and molded together.
REFERENCES:
patent: 4452537 (1984-06-01), Fukuda et al.
patent: 4460280 (1984-07-01), Tomonori
Adams Bruce L.
Roskoski Bernard
Seikosha Co. Ltd.
Wilks Van C.
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