EP0347250A3 - Electronic alarm watch - Google Patents

Electronic alarm watch Download PDF

Info

Publication number
EP0347250A3
EP0347250A3 EP19890306145 EP89306145A EP0347250A3 EP 0347250 A3 EP0347250 A3 EP 0347250A3 EP 19890306145 EP19890306145 EP 19890306145 EP 89306145 A EP89306145 A EP 89306145A EP 0347250 A3 EP0347250 A3 EP 0347250A3
Authority
EP
European Patent Office
Prior art keywords
alarm
hands
step motor
drive
watch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19890306145
Other languages
German (de)
French (fr)
Other versions
EP0347250A2 (en
EP0347250B1 (en
Inventor
Takashi C/O Seiko Epson Corporation Kawaguchi
Hiroshi C/O Seiko Epson Corporation Yabe
Akihiko C/O Seiko Epson Corporation Maruyama
Masato C/O Seiko Epson Corporation Yoshino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP63176040A external-priority patent/JP3047182B2/en
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of EP0347250A2 publication Critical patent/EP0347250A2/en
Publication of EP0347250A3 publication Critical patent/EP0347250A3/en
Application granted granted Critical
Publication of EP0347250B1 publication Critical patent/EP0347250B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/146—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor incorporating two or more stepping motors or rotors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Abstract

An electronic alarm watch has a step motor to drive current time indicating hour and minutes hands (12, 11). The watch also has another step motor to drive alarm hour and minute hands (39, 38). When a stem (23) is pulled to an alarm setting position, pressure on a switch operating button (26) causes the alarm hand step motor to drive the alarm hands (38, 39) to alarm set position indicating the time at which an alarm is to be rung. The alarm step motor ceases to drive the hands when the time is set and the pressure on the button (26) is released. When the time set by the alarm hands (38, 39) coincides with the current time displayed by the hands (11, 12), the alarm rings and the alarm step motor drives the alarm hands (38, 39) to indicate current time. It is readily perceivable from the hands (11, 12; 38, 39) whether the watch is set for alarm ringing or not.
EP19890306145 1988-06-17 1989-06-16 Electronic alarm watch Expired - Lifetime EP0347250B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP15087388 1988-06-17
JP15086288 1988-06-17
JP150862/88 1988-06-17
JP150873/88 1988-06-17
JP176040/88 1988-07-14
JP63176040A JP3047182B2 (en) 1988-07-14 1988-07-14 Electronic clock with alarm

Publications (3)

Publication Number Publication Date
EP0347250A2 EP0347250A2 (en) 1989-12-20
EP0347250A3 true EP0347250A3 (en) 1991-03-13
EP0347250B1 EP0347250B1 (en) 1993-09-29

Family

ID=27320014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890306145 Expired - Lifetime EP0347250B1 (en) 1988-06-17 1989-06-16 Electronic alarm watch

Country Status (3)

Country Link
EP (1) EP0347250B1 (en)
DE (1) DE68909507T2 (en)
HK (1) HK106697A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995013570A1 (en) * 1993-11-10 1995-05-18 Citizen Watch Co., Ltd. Alarm clock
EP3007014B1 (en) * 2014-10-06 2024-07-03 EM Microelectronic-Marin SA Low power configuration circuit for a horological motor driver

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253172A (en) * 1977-11-17 1981-02-24 Citizen Watch Company Limited Electronic timepiece or analog type
US4470707A (en) * 1983-02-17 1984-09-11 Timex Corporation Electronic setting for analog timepiece
EP0216171A1 (en) * 1985-08-29 1987-04-01 Casio Computer Company Limited Multi alarm timepiece

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253172A (en) * 1977-11-17 1981-02-24 Citizen Watch Company Limited Electronic timepiece or analog type
US4470707A (en) * 1983-02-17 1984-09-11 Timex Corporation Electronic setting for analog timepiece
EP0216171A1 (en) * 1985-08-29 1987-04-01 Casio Computer Company Limited Multi alarm timepiece

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 157 (P-369)[1880], 2nd July 1985; & JP-A-60 33 081 (SEIKOUSHIYA K.K.) 20-02-1985 *

Also Published As

Publication number Publication date
DE68909507D1 (en) 1993-11-04
EP0347250A2 (en) 1989-12-20
HK106697A (en) 1997-08-22
EP0347250B1 (en) 1993-09-29
DE68909507T2 (en) 1994-04-28

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