CH665931GA3 - - Google Patents

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Publication number
CH665931GA3
CH665931GA3 CH219986A CH219986A CH665931GA3 CH 665931G A3 CH665931G A3 CH 665931GA3 CH 219986 A CH219986 A CH 219986A CH 219986 A CH219986 A CH 219986A CH 665931G A3 CH665931G A3 CH 665931GA3
Authority
CH
Switzerland
Prior art keywords
gear
engagement
disc
gear disc
pinion
Prior art date
Application number
CH219986A
Other languages
German (de)
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
Application filed filed Critical
Publication of CH665931GA3 publication Critical patent/CH665931GA3/de

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Gears, Cams (AREA)

Abstract

In a drive gear structure for an electronically controller watch which includes a stepping motor having a drive pinion in engagement with an intermediate gear disc and a center gear in engagement with an intermediate gear pinion associated with the intermediate gear disc, a reducing gear structure is provided which has a reducing gear disc which is also in engagement with the same center gear disc and a reducing gear pinion which is in engagement with the minute gear of the watch. The single center gear disc is somewhat larger in width than the corresponding second gear disc of a corresponding watch with second hand indicator but not as wide as a second gear disc and second gear pinion used for a corresponding watch with second hand. The intermediate gear pinion and the reducing gear disc which are both in engagement with the second gear disc have the same pitch.
CH219986A 1985-06-25 1986-05-29 CH665931GA3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853522688 DE3522688A1 (en) 1985-06-25 1985-06-25 WHEELWORK OF A WRISTWATCH

Publications (1)

Publication Number Publication Date
CH665931GA3 true CH665931GA3 (en) 1988-06-30

Family

ID=6274132

Family Applications (1)

Application Number Title Priority Date Filing Date
CH219986A CH665931GA3 (en) 1985-06-25 1986-05-29

Country Status (3)

Country Link
US (1) US4805161A (en)
CH (1) CH665931GA3 (en)
DE (1) DE3522688A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW505830B (en) * 2001-04-03 2002-10-11 Ebauchesfabrik Eta Ag Timepiece movement
US6922375B2 (en) * 2003-03-17 2005-07-26 Li-Mei Shen Super-thin hanging clock
US9435409B2 (en) * 2011-11-21 2016-09-06 GM Global Technology Operations LLC Variator output gearset
US9329573B2 (en) * 2012-02-29 2016-05-03 Eta Sa Manufacture Horlogere Suisse Below dial hand fitting

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1131075A4 (en) * 1975-08-30 1977-03-15 Jeannet Chambrelien Pierre Reduction gear for electronic watch with analog display
SU1226392A1 (en) * 1978-08-11 1986-04-23 Научно-исследовательский институт часовой промышленности Reduction gear box for electronic-mechanical clock with step motor
JPS55152487A (en) * 1979-05-16 1980-11-27 Seiko Epson Corp Crystal wrist watch
US4249251A (en) * 1979-10-29 1981-02-03 Timex Corporation Gear train for timepiece with a stepping motor
GB2085621B (en) * 1980-10-21 1984-07-25 Suwa Seikosha Kk Timepiece
US4365889A (en) * 1980-11-10 1982-12-28 Xerox Corporation Document handling unit
FR2500648A1 (en) * 1981-02-26 1982-08-27 Ebauchesfabrik Eta Ag ELECTRONIC WATCH WITH ANALOG DISPLAY
CH648984GA3 (en) * 1983-05-05 1985-04-30

Also Published As

Publication number Publication date
DE3522688C2 (en) 1987-10-15
US4805161A (en) 1989-02-14
DE3522688A1 (en) 1987-01-08

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