Nothing Special   »   [go: up one dir, main page]

GB989172A - Improvements in or relating to magnetic motors - Google Patents

Improvements in or relating to magnetic motors

Info

Publication number
GB989172A
GB989172A GB2621060A GB2621060A GB989172A GB 989172 A GB989172 A GB 989172A GB 2621060 A GB2621060 A GB 2621060A GB 2621060 A GB2621060 A GB 2621060A GB 989172 A GB989172 A GB 989172A
Authority
GB
United Kingdom
Prior art keywords
teeth
stator
rotor
sets
assembly
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
Application number
GB2621060A
Inventor
Alan Stone
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB2621060A priority Critical patent/GB989172A/en
Publication of GB989172A publication Critical patent/GB989172A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/02—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of variable reluctance type
    • H02K37/04—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of variable reluctance type with rotors situated within the stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/02—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of variable reluctance type
    • H02K37/08—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of variable reluctance type with rotors axially facing the stators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Linear Motors (AREA)

Abstract

989,172. Electric motors. ELECTRIC & MUSICAL INDUSTRIES Ltd. July 28, 1961 [July 28, 1960], No. 26210/60. Heading H2A. In a magnetic stepping motor comprising relatively rotatable stator and rotor assemblies each assembly is provided with magnetic pole teeth arranged in two sets so that when teeth of a first set of one assembly are aligned with the teeth of the first set of the other assembly, the teeth of the two remaining sets are displaced with respect to each other by less than half their pitch, and means are provided for establishing a magnetic flux between the teeth of the first two sets so that said teeth are aligned and also for temporarily disestablishing said flux and establishing a flux between teeth of the other two sets whereby the rotor assembly is displaced with respect to the stator assembly and on reestablishment of the flux between the teeth of the first sets said rotor continues rotation until the teeth of the first sets are re-aligned with respect to each other but relatively displaced by one tooth spacing from their original positions. In the embodiment illustrated both the stator and rotor assemblies are in two portions. The stator assembly comprises two wound stators A, C having pole teeth 1 as shown in Fig. 2. The rotor assembly comprises two discs B, D each bearing peripheral teeth 2 which are relatively displaced, the discs being connected together by a non-ferrous sleeve 15 mounted on an output shaft 16. In the position shown in Fig. 2 the stator A is energized; in order to step the motor one position, the energization of stator A is terminated and stator C is energized for a sufficient time to bring the teeth of rotor D into line therewith, the energization then ceasing and being restored to stator A as the teeth of the rotor B approach alignment with stator of stator A.
GB2621060A 1960-07-28 1960-07-28 Improvements in or relating to magnetic motors Expired GB989172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2621060A GB989172A (en) 1960-07-28 1960-07-28 Improvements in or relating to magnetic motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2621060A GB989172A (en) 1960-07-28 1960-07-28 Improvements in or relating to magnetic motors

Publications (1)

Publication Number Publication Date
GB989172A true GB989172A (en) 1965-04-14

Family

ID=10240078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2621060A Expired GB989172A (en) 1960-07-28 1960-07-28 Improvements in or relating to magnetic motors

Country Status (1)

Country Link
GB (1) GB989172A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2208854A1 (en) * 1972-02-25 1973-09-06 Paul Hasselbach SELF-STARTING SYNCHRONOUS MOTOR FOR CAPACITOR, THREE-PHASE AND STEP-BY-STEP OPERATION
GB2157089A (en) * 1984-03-26 1985-10-16 Ching Chuen Chan Single-phase reluctance motor
GB2358740A (en) * 2000-01-28 2001-08-01 Imp Ltd Modular electric motor
US6909215B2 (en) 2000-01-28 2005-06-21 John Graham Bryant Electric motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2208854A1 (en) * 1972-02-25 1973-09-06 Paul Hasselbach SELF-STARTING SYNCHRONOUS MOTOR FOR CAPACITOR, THREE-PHASE AND STEP-BY-STEP OPERATION
GB2157089A (en) * 1984-03-26 1985-10-16 Ching Chuen Chan Single-phase reluctance motor
GB2358740A (en) * 2000-01-28 2001-08-01 Imp Ltd Modular electric motor
GB2358740B (en) * 2000-01-28 2005-02-16 Imp Ltd Electric motor
US6909215B2 (en) 2000-01-28 2005-06-21 John Graham Bryant Electric motor

Similar Documents

Publication Publication Date Title
GB1218703A (en) Stepping motor for a large number of steps per revolution
GB1285966A (en) Rotary electrical apparatus
ES8700811A1 (en) Synchronous motor.
GB993878A (en) Improvements in or relating to electric motors
GB1366229A (en) Alternating current generators
GB1349577A (en) Electric motor
GB1476236A (en) Step motor
GB1155101A (en) A rotor and stator assembly
GB1343372A (en) Permanent magnet motor
GB1230799A (en)
GB1436251A (en) Low power synchronous motor and line cord therefor
GB1381519A (en) Positioning system
GB930965A (en) Improvements in or relating to stepping motors
GB1035550A (en) Improvements in and relating to stepping motors
GB1227195A (en)
GB989172A (en) Improvements in or relating to magnetic motors
GB1318068A (en) Synchronous electric motor
GB1389983A (en) Electric synchronous motor
GB1119492A (en) Improvements in and relating to synchronous electric motors
GB698565A (en) Improvements in small synchronous electric motors of the permanently-magnetised rotor type
GB1357269A (en) Electrical stepping motor
FR1454811A (en) Synchronous motor excited by a permanent magnet
GB1420030A (en) Selectively reversible step motor
FR2381412B3 (en)
GB1049119A (en) Improvements in or relating to means for generating the automatic starting torque ofsingle phase motors