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GB1296614A - - Google Patents

Info

Publication number
GB1296614A
GB1296614A GB1296614DA GB1296614A GB 1296614 A GB1296614 A GB 1296614A GB 1296614D A GB1296614D A GB 1296614DA GB 1296614 A GB1296614 A GB 1296614A
Authority
GB
United Kingdom
Prior art keywords
carrier
tachometer
magnets
moulded
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
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 filed Critical
Publication of GB1296614A publication Critical patent/GB1296614A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
    • G01P3/495—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

1296614 Tachometer rotors VDO TACHOMETER WERKE ADOLF SCHINDLING GmbH 22 Sept 1970 [23 Sept 1969] 45146/70 Heading H2A An eddy current tachometer rotor comprises two substantially parallel permanent bar magnets 1, 2 arranged on a carrier 3 in a plane substantially perpendicular to a rotational axis of the carrier and symmetrically disposed about the axis so that the flux emanating from the rotor is polarized into four separate special regions, two poles of like polarity being adjacent in succession around the axis. In the embodiment shown, the carrier is of a thermoplastic moulded material, and for temperature compensation each magnet has either beneath it or surrounding it a small plate 5 whose permeability falls with rising temperature. In other embodiments, the carrier is made of such a material, or is a moulded mixture of a plastics material and a non-metallic magnetic powder exhibiting these characteristics. The magnets may be moulded into the carrier, and the invention is stated to allow magnetization of the magnets after assembly of the tachometer.
GB1296614D 1969-09-23 1970-09-22 Expired GB1296614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691947971 DE1947971B2 (en) 1969-09-23 1969-09-23 Magnetic arrangement for eddy current tachometers

Publications (1)

Publication Number Publication Date
GB1296614A true GB1296614A (en) 1972-11-15

Family

ID=5746217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296614D Expired GB1296614A (en) 1969-09-23 1970-09-22

Country Status (4)

Country Link
JP (1) JPS515598B1 (en)
DE (1) DE1947971B2 (en)
FR (1) FR2060390B1 (en)
GB (1) GB1296614A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934478A (en) * 1973-11-28 1976-01-27 Stewart-Warner Corporation Magnet shaft assembly for speedometer and odometer
IT1083310B (en) * 1977-06-02 1985-05-21 Zanussi A Spa Industrie MANUFACTURING PROCEDURE OF A SUPPORT FOOT, IN PARTICULAR FOR WASHING MACHINES OR SIMILAR AND FOOT SO OBTAINED
DK143305C (en) * 1979-06-07 1981-12-07 Basta Laasefab As SPEED METER FOR CYCLES AND MOTORS
US5157966A (en) * 1990-02-20 1992-10-27 The Torrington Company Transmission speed sensor
DE19856406A1 (en) * 1998-12-07 2000-06-08 Bsh Bosch Siemens Hausgeraete Clamping unit, in particular, for clamp lift trucks handling/transporting packaged loads, comprises clamping plates provided with a flexible lining which grips the load by means of friction forces and shape interaction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1256599A (en) * 1960-02-09 1961-03-24 Seignol Improved rotating magnet for tachometers and similar devices
FR1502378A (en) * 1966-02-25 1967-11-18 Borletti Spa Improvements to magnets, in particular for tachometers and counters
YU87868A (en) * 1966-02-25 1974-12-31 Borletti Spa Usavrseni obrtni magnet, prvenstveno za magnetne brzinomere

Also Published As

Publication number Publication date
DE1947971A1 (en) 1971-04-22
DE1947971B2 (en) 1971-11-25
JPS515598B1 (en) 1976-02-20
FR2060390B1 (en) 1975-01-10
DE1947971C3 (en) 1974-10-17
FR2060390A1 (en) 1971-06-18

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Legal Events

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