Horology: time measuring systems or devices – Signalling means – Time condition responsive
Patent
1980-12-24
1983-03-22
Miska, Vit W.
Horology: time measuring systems or devices
Signalling means
Time condition responsive
368250, 368273, G04B 2302, G04C 2100
Patent
active
043773451
ABSTRACT:
An alarm signaling circuit for a timepiece including a volume control circuit having a variable volume controller which can be externally adjusted and a fixed volume setting means which determines a constant volume, a change over switch which selectively changes the controller and the setting means, and a change over control circuit which has a time section for measuring an alarm signalling time and which supplies a change over control signal to the change over switch after a predetermined passage of time from the start of alarm signaling. The alarm signaling circuit performs the alarm signaling action at a certain volume established by the variable volume controller during a first alarm signaling period from a start of alarm signaling till the predetermined passage of time and further performs the alarm signaling action at a fixed alarm volume determined by the fixed volume setting means in a consecutive second alarm signaling period.
REFERENCES:
patent: 4098071 (1978-07-01), Kawakami et al.
patent: 4104865 (1978-08-01), Sasaki
patent: 4203278 (1980-05-01), Kondo et al.
patent: 4234944 (1980-11-01), Komari et al.
patent: 4255803 (1981-03-01), Sekine
patent: 4271495 (1981-06-01), Scherzinger et al.
Nagoya Mitsuru
Yamada Shinji
Miska Vit W.
Rhythm Watch Company Limited
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