Title: Electric timepiece for displaying the operating condition thereof

Abstract: In a battery operated electric timepiece operated by a battery of the type including a time display, such as a second hand, when the voltage of the battery decreases below a predetermined value, the movement of the second hand is modified to give an alarm that the life of the battery has terminated.

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Inventors: Tamaru, Munetaka (Tokyo, JA)
Kume, Kazunari (Tokorozawa, JA)
Oono, Hideshi (Sayama, JA)
Watanabe, Minoru (Tokorozawa, JA)
Sato, Hideo (Sayama, JA)
Morokawa, Shigeru (Higashiyamato, JA)

Application Number: 526980
Filing Date: 1974-11-25
Publication_date: 1976-12-21
Assignee: Citizen Watch Co., Ltd. (Tokyo, JA)
Primary Class(es): 368/66 368/80, 368/228, 968/505, 968/885, 968/925, 968/DIG1
Other Classes:
US Patent Ref:

3451210	Jun, 1969	Helterlin, Jr. et al.	58/28.
3553957	Jan, 1971	Dome et al.	58/23.
3568430	Mar, 1971	Walton	58/23.
3591957	Jul, 1971	Cobarg	58/23.
3665703	May, 1972	Cobarg	58/23.
3802182	Apr, 1974	Fujita	58/23.
3807164	Apr, 1974	Zaisky et al.	58/28.
3841087	Oct, 1974	Kikuchi	58/23.
3898790	Aug, 1975	Takamune et al.	58/23.

Other Refs:
Primary Examiner: Weldon, Ulysses
Assistant Examiner:
Attorney: Sherman & Shalloway