GB321663A - Improved eddy current brake - Google Patents

Improved eddy current brake

Info

Publication number
GB321663A
GB321663A GB2041928A GB2041928A GB321663A GB 321663 A GB321663 A GB 321663A GB 2041928 A GB2041928 A GB 2041928A GB 2041928 A GB2041928 A GB 2041928A GB 321663 A GB321663 A GB 321663A
Authority
GB
United Kingdom
Prior art keywords
drum
electromagnet
brake
modification
fins
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
GB2041928A
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.)
E R & F Turner Ltd
Original Assignee
E R & F Turner 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 E R & F Turner Ltd filed Critical E R & F Turner Ltd
Priority to GB2041928A priority Critical patent/GB321663A/en
Publication of GB321663A publication Critical patent/GB321663A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
    • H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
    • H02K49/043—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with a radial airgap

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Braking Arrangements (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Abstract

321,663. Turner, Ltd., E. R., & F., and Johnson, F. H. July 13, 1928. Electric and magnetic. - A n electromagnetic brake for use for example on rail and road vehicles of cranes and hoisting gear comprises a multipolar field electromagnet, a solid steel drum revolving in the field of the magnet and fins on the rotor for dissipating heat. The drum 4 is joined by spokes 5 to a hub 6 on the shaft it is desired to brake and carries a fan 9 for drawing air over the radiating fins 7. Further cooling fins 12, 14 are provided. Brass and asbestos screens 15 protect the windings of the poles 3 of the electromagnet from the heat of the drum. Spring washers 17 press the windings against the screens. When provided on a vehicle the pedal cutting out the controlling resistance operates a mechanical brake in the last part of its movement. In a modification the yoke 2 of the electromagnet carries the bearings for the shaft 1 of the drum and is provided with supporting feet. In a modification for an internal combustion engine, the flywheel of the engine forms the drum, and the electromagnet frame is a prolongation of the engine casing. In a further modification the drum surrounds the electromagnets and fan blades may be fitted inside the drum to draw air through holes in the drum and over the magnets. In a brake for a vehicle the lowermost poles of the electromagnet may be omitted to give greater road clearance.
GB2041928A 1928-07-13 1928-07-13 Improved eddy current brake Expired GB321663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2041928A GB321663A (en) 1928-07-13 1928-07-13 Improved eddy current brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2041928A GB321663A (en) 1928-07-13 1928-07-13 Improved eddy current brake

Publications (1)

Publication Number Publication Date
GB321663A true GB321663A (en) 1929-11-13

Family

ID=10145643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2041928A Expired GB321663A (en) 1928-07-13 1928-07-13 Improved eddy current brake

Country Status (1)

Country Link
GB (1) GB321663A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203373B (en) * 1962-08-28 1965-10-21 Ziehl Abegg O H G Outrunner brake motor
WO2011137993A3 (en) * 2010-05-03 2012-09-13 Voith Turbo Smi Technologies Gmbh & Co. Kg A rotor for a permanent magnet retarder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203373B (en) * 1962-08-28 1965-10-21 Ziehl Abegg O H G Outrunner brake motor
WO2011137993A3 (en) * 2010-05-03 2012-09-13 Voith Turbo Smi Technologies Gmbh & Co. Kg A rotor for a permanent magnet retarder
JP2013521749A (en) * 2010-05-03 2013-06-10 新日鐵住金株式会社 Rotor for permanent magnet retarder

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