Alarm mechanism

Details Alarm mechanism Alarm mechanism

1987-07-17

1988-05-31

Miska, Vit W.

Horology: time measuring systems or devices

Chronological

With simultaneous time indicating means

368269, G04B 2302

Patent

active

047486023

ABSTRACT:
An alarm mechanism for an alarm clock has an alarm hand and an hour hand mounted coaxially with respect to each other and the alarm hand and the hour hand are formed with integral hubs having cam grooves and cam pawls. The cam grooves and cam pawls are positioned with the same positional relationship with respect to the hub portions of the alarm hand and the 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. The alarm hand has an alarm pinion gear formed integrally with the annular hub portion of the alarm hand. Thus, in attaching the hands to the clock during assembly, it is possible to attach the alarm hand and the hour hand at any random angular position without having to pay special attention to the respective positional relationships of the two hands.

REFERENCES:
patent: 4452537 (1984-06-01), Fukuda et al.
patent: 4460280 (1984-07-01), Tomonori
patent: 4693612 (1987-09-01), Yoshizawa

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