GB1186838A - Electric Stepping Motor - Google Patents

Electric Stepping Motor

Info

Publication number
GB1186838A
GB1186838A GB3155568A GB3155568A GB1186838A GB 1186838 A GB1186838 A GB 1186838A GB 3155568 A GB3155568 A GB 3155568A GB 3155568 A GB3155568 A GB 3155568A GB 1186838 A GB1186838 A GB 1186838A
Authority
GB
United Kingdom
Prior art keywords
rotor
coil
degrees
energization
magnetic axis
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
GB3155568A
Inventor
Arthur F Ordas
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.)
Mercury Systems Inc
Original Assignee
Bowmar Instrument Corp
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 Bowmar Instrument Corp filed Critical Bowmar Instrument Corp
Priority to GB3155568A priority Critical patent/GB1186838A/en
Publication of GB1186838A publication Critical patent/GB1186838A/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
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Electromechanical Clocks (AREA)
  • Displays For Variable Information Using Movable Means (AREA)

Abstract

1,186,838. Electric motors. BOWMAR INSTRUMENT CORP. 2 July, 1968, No. 31555/68. Heading H2A. To enable the permanent magnet -rotor 46 of a stepping motor for displaying digital data to be rotated through 180 degrees by reverse energization of one of a plurality of stator coils 44, the rotor carries a pair of polepieces 64, 66 at opposite ends of a diameter 68 displaced by an angle #, Fig. 7, of between 5 degrees and 25 degrees from the magnetic axis 62 of .the rotor. In the embodiment shown, five coils 44 are provided each spanning five poles of ten-pole stator and therefore on energization of a coil the magnetic axis 62 aligns itself with the centre one of the associated poles. On de-energization of the coil, the permanent magnet flux seeks the lowest reluctance path to the stator and redistributes itself through the polepieces 64, 66 causing the rotor to rotate slightly until they are aligned with said centre pole. The resulting slight displacement of the magnetic axis enables torque to be exerted on the rotor if the said coil is energized in the reverse direction. The rotor carries a drum 28 on which the digital data is arranged for display through a window 26 in a two-part casing 14, 16.
GB3155568A 1968-07-02 1968-07-02 Electric Stepping Motor Expired GB1186838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3155568A GB1186838A (en) 1968-07-02 1968-07-02 Electric Stepping Motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3155568A GB1186838A (en) 1968-07-02 1968-07-02 Electric Stepping Motor

Publications (1)

Publication Number Publication Date
GB1186838A true GB1186838A (en) 1970-04-08

Family

ID=10324876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3155568A Expired GB1186838A (en) 1968-07-02 1968-07-02 Electric Stepping Motor

Country Status (1)

Country Link
GB (1) GB1186838A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2940449A1 (en) * 1978-10-06 1980-04-10 Citroen Sa ELECTRIC STEPPER MOTOR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2940449A1 (en) * 1978-10-06 1980-04-10 Citroen Sa ELECTRIC STEPPER MOTOR

Similar Documents

Publication Publication Date Title
US3684907A (en) Electric motor
GB1503199A (en) Electromagnetic motor
US3693034A (en) Pulse motor assembly
GB993878A (en) Improvements in or relating to electric motors
GB1285966A (en) Rotary electrical apparatus
GB1456546A (en) Brushless dc motors
GB1525480A (en) Stepping motor
US3439200A (en) Reversible stepping motor with braking coils and biasing permanent magnets
US3059131A (en) Synchronous motors
GB1343372A (en) Permanent magnet motor
GB1230799A (en)
GB1227195A (en)
GB1287292A (en) Improvements in or relating to electric stepping motors and remote register devices operated thereby
US3801842A (en) Stepping motor
GB1076771A (en) Improvements in electric motors
NL6913200A (en)
GB1035550A (en) Improvements in and relating to stepping motors
GB1247273A (en) Electric stepping motors
GB1186838A (en) Electric Stepping Motor
US2780764A (en) Electric impulse motor-device
US3416015A (en) Stepping motor
US2124672A (en) Electric motor
US3201785A (en) Indicating device
US3419858A (en) Magnetically controlled rotating indicator
GB1420030A (en) Selectively reversible step motor

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee