GB1429100A - Electric stepping motor - Google Patents
Electric stepping motorInfo
- Publication number
- GB1429100A GB1429100A GB2096374A GB2096374A GB1429100A GB 1429100 A GB1429100 A GB 1429100A GB 2096374 A GB2096374 A GB 2096374A GB 2096374 A GB2096374 A GB 2096374A GB 1429100 A GB1429100 A GB 1429100A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pawl
- ratchet
- gap
- rotor
- stepping motor
- 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
- G04C13/00—Driving mechanisms for clocks by master-clocks
- G04C13/08—Slave-clocks actuated intermittently
- G04C13/10—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms
- G04C13/11—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms with rotating armature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Linear Motors (AREA)
- Electromechanical Clocks (AREA)
Abstract
1429100 Electric motors CITIZEN WATCH CO Ltd 13 May 1974 [15 May 1973] 20963/74 Heading H2A An electric stepping motor comprises a ratchet 4 rotatable with a permanent magnet rotor 3 of the motor and an elongate reverse stop pawl 6 co-operating with the ratchet, there being a gap g, Fig. 1B, between the end of the pawl and the nearest ratchet tooth when the rotor is in its rest position. The motor shown is intended for use in a watch, the gap g being of the order of 30-180 microns. A radial gap S between the end of the pawl and the ratchet wheel is also of the order of 30-180 microns. The position of the pawl is adjustable. The rest position of the rotor is determined by positioning the stator poles to form a non-uniform air gap.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1973056827U JPS505806U (en) | 1973-05-15 | 1973-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1429100A true GB1429100A (en) | 1976-03-24 |
Family
ID=13038198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2096374A Expired GB1429100A (en) | 1973-05-15 | 1974-05-13 | Electric stepping motor |
Country Status (4)
Country | Link |
---|---|
US (1) | US3922845A (en) |
JP (1) | JPS505806U (en) |
DE (1) | DE2423705A1 (en) |
GB (1) | GB1429100A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2123221A (en) * | 1982-07-07 | 1984-01-25 | Mellert Gmbh And Co Kg Fabrik | A self-starting electric motor |
CN114137816A (en) * | 2020-09-03 | 2022-03-04 | 斯沃奇集团研究和开发有限公司 | Timepiece comprising a generator and method of assembling such a generator |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2747209A1 (en) * | 1976-12-10 | 1978-06-15 | Niles Parts Co Ltd | STEPPER MOTOR FOR AN ELECTRONIC WATCH |
US4162418A (en) * | 1976-12-14 | 1979-07-24 | Niles Parts Co., Ltd. | Stepping motor for electronic clock |
US9144719B1 (en) * | 2014-06-18 | 2015-09-29 | Wilson Sporting Goods Co. | Golf club adjustable hosel assembly |
US9144720B1 (en) * | 2014-06-18 | 2015-09-29 | Wilson Sporting Goods Co. | Golf club adjustable hosel assembly |
US9358429B2 (en) * | 2014-06-18 | 2016-06-07 | Wilson Sporting Goods Co. | Golf club adjustable hosel assembly |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3151440A (en) * | 1960-10-12 | 1964-10-06 | Hamilton Watch Co | Contact index system for an electric watch |
JPS455550Y1 (en) * | 1966-02-11 | 1970-03-17 | ||
GB1343223A (en) * | 1971-02-17 | 1974-01-10 | Suwa Seikosha Kk | Detent apparatus eg for use in an electronic timepiece |
US3810354A (en) * | 1972-01-05 | 1974-05-14 | Citizen Watch Co Ltd | Quick correction mechanism for a seconds hand of a timepiece |
-
1973
- 1973-05-15 JP JP1973056827U patent/JPS505806U/ja active Pending
-
1974
- 1974-05-13 GB GB2096374A patent/GB1429100A/en not_active Expired
- 1974-05-14 DE DE2423705A patent/DE2423705A1/en not_active Withdrawn
- 1974-05-14 US US469904A patent/US3922845A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2123221A (en) * | 1982-07-07 | 1984-01-25 | Mellert Gmbh And Co Kg Fabrik | A self-starting electric motor |
US4499389A (en) * | 1982-07-07 | 1985-02-12 | Hermann Mellert Gmbh & Co. Kg | Self-starting electric motor |
CN114137816A (en) * | 2020-09-03 | 2022-03-04 | 斯沃奇集团研究和开发有限公司 | Timepiece comprising a generator and method of assembling such a generator |
EP3964897A1 (en) * | 2020-09-03 | 2022-03-09 | The Swatch Group Research and Development Ltd | Timepiece comprising a generator and method for mounting such a generator |
CN114137816B (en) * | 2020-09-03 | 2023-05-05 | 斯沃奇集团研究和开发有限公司 | Timepiece comprising a generator and method for assembling such a generator |
Also Published As
Publication number | Publication date |
---|---|
DE2423705A1 (en) | 1974-12-05 |
JPS505806U (en) | 1975-01-22 |
US3922845A (en) | 1975-12-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |