GB693955A - Improvements in and relating to permanent magnet clutch-brakes - Google Patents

Improvements in and relating to permanent magnet clutch-brakes

Info

Publication number
GB693955A
GB693955A GB23390/51A GB2339051A GB693955A GB 693955 A GB693955 A GB 693955A GB 23390/51 A GB23390/51 A GB 23390/51A GB 2339051 A GB2339051 A GB 2339051A GB 693955 A GB693955 A GB 693955A
Authority
GB
United Kingdom
Prior art keywords
magnetic
magnetically susceptible
gaps
brake
mixture
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
GB23390/51A
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
Publication of GB693955A publication Critical patent/GB693955A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
    • F16D57/002—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders comprising a medium with electrically or magnetically controlled internal friction, e.g. electrorheological fluid, magnetic powder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
    • F16D37/02—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being magnetisable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D67/00—Combinations of couplings and brakes; Combinations of clutches and brakes
    • F16D67/02—Clutch-brake combinations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
    • F16D2037/002—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive characterised by a single substantially axial gap in which the fluid or medium consisting of small particles is arranged

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

693,955. Magnetic fluid clutch - brakes. BRITISH THOMSON -HOUSTON CO., Ltd. Oct. 8, 1951 [Oct. 11, 1950] , No. 23390/51. Class 80 (ii). [Also in Group XXXIV] A magnetic fluid combined clutch and brake device comprises a driving member, a driven member, brake means, gaps between the parts containing a magnetically susceptible mixture, magnetic means in one of the members to create a magnet field in the gaps, and shunt means for preventing the magnetic field from being created in one of the said gaps. As shown, a driving shaft 2 carries a member 14 with a magnetic ring inset 15, and a driven shaft 3 carries an armature formed by a permanent ring magnet 10 with pole pieces 11, 12. A fixed brake ring member 18 of magnetic material surrounds the armature and magnetically susceptible mixture 26. 27 fills the gaps between the parts. Non-magnetic rings 23, 25 and a magnetic ring 24 in the armature cause the magnetic flux to cross and recross the gaps and thus couple the parts together. Control means are provided in the form of an annulus 28 of magnetic material which acts as a shunt for the flux and is axially movable by a lever 32 acting through the linkwork shown. In the Figure, flux passes from the magnet 10 through parts 11, 28, 24 to the magnetically susceptible mixture 27, brake member 18 and pole piece 12, but bypasses the magnetically susceptible mixture 26, so that the driving and driven shafts 2, 3 are not coupled together and the driven shaft is braked. If the shunt is moved to the right, the flux passes through the magnetically susceptible mixture 26 to couple the driving and driven shafts but bypasses the magnetically susceptible mixture 27, the brake means accordingly being rendered ineffective. Specifications 649,553 and 688,247 are referred to.
GB23390/51A 1950-10-11 1951-10-08 Improvements in and relating to permanent magnet clutch-brakes Expired GB693955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US693955XA 1950-10-11 1950-10-11

Publications (1)

Publication Number Publication Date
GB693955A true GB693955A (en) 1953-07-08

Family

ID=22088708

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23390/51A Expired GB693955A (en) 1950-10-11 1951-10-08 Improvements in and relating to permanent magnet clutch-brakes

Country Status (1)

Country Link
GB (1) GB693955A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239092A (en) * 1978-08-28 1980-12-16 Dana Corporation Adjustable tensioner
EP1201954A2 (en) * 2000-10-31 2002-05-02 Eaton Corporation Lightweight magnetic particle clutch
CN102927166A (en) * 2012-11-16 2013-02-13 陈吉朋 Clutch type magnetorheological fluid brake
TWI676746B (en) * 2018-06-21 2019-11-11 國立清華大學 Magnetorheological fluid clutch and operation method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239092A (en) * 1978-08-28 1980-12-16 Dana Corporation Adjustable tensioner
EP1201954A2 (en) * 2000-10-31 2002-05-02 Eaton Corporation Lightweight magnetic particle clutch
EP1201954A3 (en) * 2000-10-31 2003-10-08 Eaton Corporation Lightweight magnetic particle clutch
US6837350B2 (en) 2000-10-31 2005-01-04 Eaton Corporation Lightweight magnetic particle device
CN102927166A (en) * 2012-11-16 2013-02-13 陈吉朋 Clutch type magnetorheological fluid brake
CN102927166B (en) * 2012-11-16 2015-04-29 陈吉朋 Clutch type magnetorheological fluid brake
TWI676746B (en) * 2018-06-21 2019-11-11 國立清華大學 Magnetorheological fluid clutch and operation method thereof

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