GB372794A - Improvements in and relating to electric motors - Google Patents

Improvements in and relating to electric motors

Info

Publication number
GB372794A
GB372794A GB383331A GB383331A GB372794A GB 372794 A GB372794 A GB 372794A GB 383331 A GB383331 A GB 383331A GB 383331 A GB383331 A GB 383331A GB 372794 A GB372794 A GB 372794A
Authority
GB
United Kingdom
Prior art keywords
rotor
permanent magnets
magnets
borrowell
class
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
GB383331A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB383331A priority Critical patent/GB372794A/en
Publication of GB372794A publication Critical patent/GB372794A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/104—Structural association with clutches, brakes, gears, pulleys or mechanical starters with eddy-current brakes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

372,794. Brakes. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and YOUNG, A. P. ; Borrowell, Borrowell Lane, Kenilworth, Warwickshire. Feb. 6, 1931, No. 3833. [Class 103 (i).] An induction motor having two stator elements mounted at oppo- .site ends of a diameter of the rotor, and a rotor 1 with a cylindrical flange of conducting material, has one or more braking permanent magnets 7, 8 between the poles of which the rotor flange passes, and these magnets are pivoted for limited rotation about the rotor axis 2, the movement being limited by a spring 14. The stator elements each consist of cores carrying potential and current coils 12<1>, 6 respectively. To increase the braking effect, a pad 15 may be connected to the bar 9 carrying the permanent magnets 7, 8 and to the frame 5 by links 10, 11 so that it acts as a mechanical brake when the magnets move, or the movement of the permanent magnets may vary the magnetic damping by means of a fixed magnetic shunt. Specifications 17247/15 and 193,752, [both in Class 40 (ii), Phonographs &c.], are referred to.
GB383331A 1931-02-06 1931-02-06 Improvements in and relating to electric motors Expired GB372794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB383331A GB372794A (en) 1931-02-06 1931-02-06 Improvements in and relating to electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB383331A GB372794A (en) 1931-02-06 1931-02-06 Improvements in and relating to electric motors

Publications (1)

Publication Number Publication Date
GB372794A true GB372794A (en) 1932-05-06

Family

ID=9765790

Family Applications (1)

Application Number Title Priority Date Filing Date
GB383331A Expired GB372794A (en) 1931-02-06 1931-02-06 Improvements in and relating to electric motors

Country Status (1)

Country Link
GB (1) GB372794A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012055647A3 (en) * 2010-10-29 2012-07-05 Robert Bosch Gmbh Power tool braking device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012055647A3 (en) * 2010-10-29 2012-07-05 Robert Bosch Gmbh Power tool braking device
US9243674B2 (en) 2010-10-29 2016-01-26 Robert Bosch Gmbh Power tool braking device

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