CA928832A - Battery-powered clock - Google Patents
Battery-powered clockInfo
- Publication number
- CA928832A CA928832A CA047381A CA47381A CA928832A CA 928832 A CA928832 A CA 928832A CA 047381 A CA047381 A CA 047381A CA 47381 A CA47381 A CA 47381A CA 928832 A CA928832 A CA 928832A
- Authority
- CA
- Canada
- Prior art keywords
- battery
- powered clock
- powered
- clock
- 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.)
- Expired
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
- G04C3/16—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating an electro-dynamic continuously rotating motor
- G04C3/165—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating an electro-dynamic continuously rotating motor comprising a mechanical regulating device influencing the electromotor
-
- 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
- G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
- G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
-
- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71908768A | 1968-04-05 | 1968-04-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA928832A true CA928832A (en) | 1973-06-19 |
Family
ID=24888703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA047381A Expired CA928832A (en) | 1968-04-05 | 1969-03-31 | Battery-powered clock |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3541778A (en) |
| CA (1) | CA928832A (en) |
| DE (1) | DE1916604A1 (en) |
| GB (1) | GB1262764A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE29403E (en) * | 1970-07-27 | 1977-09-20 | Kabushiki Kaisha Suwa Seikosha | Quartz crystal wrist watch |
| US3902312A (en) * | 1970-07-27 | 1975-09-02 | Suwa Seikosha Kk | Quartz crystal wrist watch |
| US3737746A (en) * | 1972-04-19 | 1973-06-05 | Gen Time Corp | Quartz crystal controlled stepper motor |
| US3775963A (en) * | 1973-01-12 | 1973-12-04 | T Clapham | Magnetic clock |
| US3824781A (en) * | 1973-03-14 | 1974-07-23 | Timex Corp | Horological movement employing inductive stepping motor |
| FR2268293B3 (en) * | 1974-04-18 | 1977-02-18 | Valroger Pierre | |
| US3978651A (en) * | 1974-12-27 | 1976-09-07 | Kabushiki Kaisha Suwa Seikosha | Step motor for quartz crystal electronic timepiece |
| JP5819304B2 (en) * | 2010-09-09 | 2015-11-24 | シチズンホールディングス株式会社 | Swing type step motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1560056A (en) * | 1923-05-01 | 1925-11-03 | Western Electric Co | Source of waves of constant frequency |
| US3250066A (en) * | 1963-08-12 | 1966-05-10 | Philco Corp | Electronic clock utilizing oscillator to switch bistable circuit at subharmonic of oscillator frequency |
| US3421309A (en) * | 1966-06-13 | 1969-01-14 | Bulova Watch Co Inc | Unitized tuning fork vibrator |
-
1968
- 1968-04-05 US US719087A patent/US3541778A/en not_active Expired - Lifetime
-
1969
- 1969-03-31 CA CA047381A patent/CA928832A/en not_active Expired
- 1969-04-01 GB GB07047/69A patent/GB1262764A/en not_active Expired
- 1969-04-01 DE DE19691916604 patent/DE1916604A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1916604A1 (en) | 1969-10-30 |
| GB1262764A (en) | 1972-02-09 |
| US3541778A (en) | 1970-11-24 |
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