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GB649553A - Improvements in or relating to magnetic fluid clutch - Google Patents

Improvements in or relating to magnetic fluid clutch

Info

Publication number
GB649553A
GB649553A GB26561/48A GB2656148A GB649553A GB 649553 A GB649553 A GB 649553A GB 26561/48 A GB26561/48 A GB 26561/48A GB 2656148 A GB2656148 A GB 2656148A GB 649553 A GB649553 A GB 649553A
Authority
GB
United Kingdom
Prior art keywords
elements
magnetic
locking
coil
exciting coil
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
GB26561/48A
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.)
United States Department of Commerce
Original Assignee
United States Department of Commerce
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 United States Department of Commerce filed Critical United States Department of Commerce
Publication of GB649553A publication Critical patent/GB649553A/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
    • 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
    • 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
    • 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
    • F16D2037/005—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive characterised by a single substantially radial gap in which the fluid or medium consisting of small particles is arranged
    • 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
    • F16D2037/007—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive characterised by multiple substantially radial gaps 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

649,553. Friction clutches and couplings. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Oct. 12, 1948, No. 26561. Convention date, Oct. 31, 1947. '[Class 80(ii)] [Also in Group XXXIV] A clutch or a coupling has two closely spaced movable elements of magnetic material between which magnetic particles, preferably in a fluid, are maintained and, when a magnetic field is applied, locking of the said two elements is effected. Fig. 1 shows a driving shaft 1 having a disc 3 secured to it, and a driven shaft 2 having fixed to it a cup 4 containing a fluid, e.g. oil in which iron dust is placed. When a coil 6 is energized from a source such as a battery 7 magnetic flux flows as indicated by the arrows and a magnetic locking of the elements 3, 4 is effected through the medium of the iron dust contained there between. The locking torque can be made variable by the use of a variable resistance 9. If either of the shafts 1, -2 is held stationary the device can be used as a brake on the application of the magnetic field. In a modification, the two elements 3, 4 of the device are replaced by two cylindrical magnetic bodies with the exciting coil mounted concentrically within the inner element. This coil can be eliminated by making the inner element of permanently magnetizable material strongly polarized at spaced areas around its periphery but in this form the torque cannot be varied unless a still further modification is made consisting in making the two elements of the device conical and means provided to alter the air gap between them by moving axially the inner element Fig. 4 (not shown). In a further modification, the device is made particularly useful as a brake by employing a number of discs fixed to each of the two elements of the device and by providing a circulating cooling system to dissipate the heat. In another modification. the exciting coil is held stationary and positioned concentrically outside the outer of the two elements. When used for A.C. the two elements are laminated and the A.C. exciting coil is mounted either on the inner or on the outer element.
GB26561/48A 1947-10-31 1948-10-12 Improvements in or relating to magnetic fluid clutch Expired GB649553A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US649553XA 1947-10-31 1947-10-31

Publications (1)

Publication Number Publication Date
GB649553A true GB649553A (en) 1951-01-31

Family

ID=22059362

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26561/48A Expired GB649553A (en) 1947-10-31 1948-10-12 Improvements in or relating to magnetic fluid clutch

Country Status (1)

Country Link
GB (1) GB649553A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840775A (en) * 1954-01-07 1958-06-24 Smiths America Corp Generator control for vehicle transmission system
DE1043831B (en) * 1955-03-03 1958-11-13 Smith & Sons Ltd S Planetary gear especially for motor vehicles
DE973043C (en) * 1951-02-22 1959-11-26 Eaton Mfg Co Magnetic particle clutch
DE1234457B (en) * 1959-04-09 1967-02-16 Lear Inc Magnetic particle clutch
EP0234564A2 (en) * 1986-02-26 1987-09-02 Shinko Electric Co. Ltd. Torque limiter
EP0317186A2 (en) * 1987-11-18 1989-05-24 Jaguar Cars Limited Engine cooling fan
EP0395007A2 (en) * 1989-04-27 1990-10-31 Eaton Corporation Electroviscous fluid clutch
WO1999019189A1 (en) * 1997-10-09 1999-04-22 Ut Automotive Dearborn, Inc. Magnetic coupling mechanism for use in an automotive vehicle
US6867709B1 (en) 1999-02-18 2005-03-15 Golden River Traffic Limited Vehicle detector and classifier
US7849955B2 (en) 2008-02-05 2010-12-14 Crown Equipment Corporation Materials handling vehicle having a steer system including a tactile feedback device

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973043C (en) * 1951-02-22 1959-11-26 Eaton Mfg Co Magnetic particle clutch
US2840775A (en) * 1954-01-07 1958-06-24 Smiths America Corp Generator control for vehicle transmission system
DE1043831B (en) * 1955-03-03 1958-11-13 Smith & Sons Ltd S Planetary gear especially for motor vehicles
DE1234457B (en) * 1959-04-09 1967-02-16 Lear Inc Magnetic particle clutch
EP0234564A2 (en) * 1986-02-26 1987-09-02 Shinko Electric Co. Ltd. Torque limiter
EP0234564A3 (en) * 1986-02-26 1988-03-02 Shinko Electric Co. Ltd. Torque limiter
EP0317186A2 (en) * 1987-11-18 1989-05-24 Jaguar Cars Limited Engine cooling fan
EP0317186A3 (en) * 1987-11-18 1989-11-29 Jaguar Cars Limited Cooling systems
US4920929A (en) * 1987-11-18 1990-05-01 Jaguar Cars Limited Variable speed coupling system for cooling an engine
EP0395007A3 (en) * 1989-04-27 1990-12-05 Eaton Corporation Electroviscous fluid clutch
EP0395007A2 (en) * 1989-04-27 1990-10-31 Eaton Corporation Electroviscous fluid clutch
WO1999019189A1 (en) * 1997-10-09 1999-04-22 Ut Automotive Dearborn, Inc. Magnetic coupling mechanism for use in an automotive vehicle
US5977678A (en) 1997-10-09 1999-11-02 Ut Automotive Dearborn, Inc. Magnetic coupling mechanism for use in an automotive vehicle
US6867709B1 (en) 1999-02-18 2005-03-15 Golden River Traffic Limited Vehicle detector and classifier
US7849955B2 (en) 2008-02-05 2010-12-14 Crown Equipment Corporation Materials handling vehicle having a steer system including a tactile feedback device
US7980352B2 (en) 2008-02-05 2011-07-19 Crown Equipment Corporation Materials handling vehicle having a steer system including a tactile feedback device
US8172033B2 (en) 2008-02-05 2012-05-08 Crown Equipment Corporation Materials handling vehicle with a module capable of changing a steerable wheel to control handle position ratio
US8412431B2 (en) 2008-02-05 2013-04-02 Crown Equipment Corporation Materials handling vehicle having a control apparatus for determining an acceleration value
US8718890B2 (en) 2008-02-05 2014-05-06 Crown Equipment Corporation Materials handling vehicle having a control apparatus for determining an acceleration value
US9421963B2 (en) 2008-02-05 2016-08-23 Crown Equipment Corporation Materials handling vehicle having a control apparatus for determining an acceleration value

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