IT1078748B - IMPROVEMENT IN MINIATURE ELECTRIC MOTORS - Google Patents

IMPROVEMENT IN MINIATURE ELECTRIC MOTORS

Info

Publication number: IT1078748B
Authority: IT; Italy
Prior art keywords: improvement; electric motors; miniature electric; miniature; motors
Prior art date: 1975-09-23

Application number

IT5130476A

Other languages

Italian (it)

Original Assignee

Seikosha Kk

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.)

1975-09-23

Filing date

1976-09-16

Publication date

1985-05-08

1975-09-23 Priority claimed from JP50115199A external-priority patent/JPS5814144B2/en

1976-02-20 Priority claimed from JP1761476A external-priority patent/JPS52101404A/en

1976-09-16 Application filed by Seikosha Kk filed Critical Seikosha Kk

1985-05-08 Application granted granted Critical

1985-05-08 Publication of IT1078748B publication Critical patent/IT1078748B/en

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
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/141—Stator cores with salient poles consisting of C-shaped cores
- H02K1/143—Stator cores with salient poles consisting of C-shaped cores of the horse-shoe type
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/18—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having horse-shoe armature cores
- H02K21/185—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having horse-shoe armature cores with the axis of the rotor perpendicular to the plane of the armature

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Permanent Magnet Type Synchronous Machine (AREA)
Iron Core Of Rotating Electric Machines (AREA)

IT5130476A 1975-09-23 1976-09-16 IMPROVEMENT IN MINIATURE ELECTRIC MOTORS IT1078748B (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP50115199A JPS5814144B2 (en)	1975-09-23	1975-09-23	Kogata motor
JP1761476A JPS52101404A (en)	1976-02-20	1976-02-20	Miniature motor

Publications (1)

Publication Number	Publication Date
IT1078748B true IT1078748B (en)	1985-05-08

Family

ID=26354166

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT5130476A IT1078748B (en)	1975-09-23	1976-09-16	IMPROVEMENT IN MINIATURE ELECTRIC MOTORS

Country Status (7)

Country	Link
BR (1)	BR7606235A (en)
CH (1)	CH598712A5 (en)
DE (1)	DE2642432C2 (en)
FR (1)	FR2326069A1 (en)
GB (1)	GB1559993A (en)
HK (1)	HK27883A (en)
IT (1)	IT1078748B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5543953A (en) *	1978-09-20	1980-03-28	Rhythm Watch Co Ltd	Miniature motor for watch
WO1982000929A1 (en) *	1980-08-29	1982-03-18	Sa Elessach	Stepping motor,particularly for electronic watch
EP1544693A1 (en) *	2003-12-19	2005-06-22	ETA SA Manufacture Horlogère Suisse	Single phase step motor for a wristwatch type mechanism

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US872873A (en) *	1906-08-20	1907-12-03	Frank L West	Mounting for hooks and eyes.
FR972469A (en) *	1941-03-29	1951-01-30	Hatot Leon Ets	Improvements to magneto-electric devices
GB687948A (en) *	1948-12-02	1953-02-25	Telefonbau Und Normalzeit Ges	Improvements in or relating to electromagnetic secondary clocks
FR1033643A (en) *	1951-01-31	1953-07-13	Hatot Leon Ets	Improvements to magneto-electric clocks and similar devices
DE1078678B (en) *	1953-09-17	1960-03-31	An Des Etablissements Leon Hat	Circuit arrangement for brushless motors
CH334520A (en) *	1956-04-27	1958-11-30	Hatot Leon Ets	Electromagnetic pulse motor device
CH354506A (en) *	1958-05-02	1961-05-31	Horstmann Magnetics Ltd	Rotary electromagnetic device
NL6414624A (en) *	1964-12-16	1966-06-17
US3878414A (en) *	1972-11-22	1975-04-15	Star Mfg Co	Electric motor arrangement
FR2263632B1 (en) *	1974-03-07	1980-08-14	Seiko Instr & Electronics

1976
- 1976-09-14 GB GB3802776A patent/GB1559993A/en not_active Expired
- 1976-09-16 IT IT5130476A patent/IT1078748B/en active
- 1976-09-17 FR FR7627988A patent/FR2326069A1/en active Granted
- 1976-09-20 BR BR7606235A patent/BR7606235A/en unknown
- 1976-09-21 DE DE19762642432 patent/DE2642432C2/en not_active Expired
- 1976-09-23 CH CH1208776A patent/CH598712A5/xx not_active IP Right Cessation
1983
- 1983-08-18 HK HK27883A patent/HK27883A/en unknown

Also Published As

Publication number	Publication date
DE2642432C2 (en)	1984-11-15
CH598712A5 (en)	1978-05-12
DE2642432A1 (en)	1977-03-31
GB1559993A (en)	1980-01-30
HK27883A (en)	1983-08-26
BR7606235A (en)	1977-06-14
FR2326069B1 (en)	1982-07-30
FR2326069A1 (en)	1977-04-22

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Legal Events

Date	Code	Title	Description
1999-10-27	TA	Fee payment date (situation as of event date), data collected since 19931001	Effective date: 19930929