GB750838A - Improvements in or relating to eddy-current speed or rate indicators - Google Patents

Improvements in or relating to eddy-current speed or rate indicators

Info

Publication number
GB750838A
GB750838A GB4440/54A GB444054A GB750838A GB 750838 A GB750838 A GB 750838A GB 4440/54 A GB4440/54 A GB 4440/54A GB 444054 A GB444054 A GB 444054A GB 750838 A GB750838 A GB 750838A
Authority
GB
United Kingdom
Prior art keywords
sleeve
magnet
eddy
adjustable
relating
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
GB4440/54A
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.)
Fratelli Borletti SpA
Borletti SpA
Original Assignee
Fratelli Borletti SpA
Borletti SpA
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 Fratelli Borletti SpA, Borletti SpA filed Critical Fratelli Borletti SpA
Priority to GB444055A priority Critical patent/GB801557A/en
Publication of GB750838A publication Critical patent/GB750838A/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)

Abstract

750,838. Speedometers. SOC. PER AZIONI FRATELLI BORLETTI. Feb. 15, 1954 [Oct. 17, 1953], No. 4440/54. Class 106(3). In an eddy-current speedometer the magnet is adjustable towards and away from the drag member to allow for calibration. In one example, Fig. 1, the magnet 5 is supported on a pivot 4 mounted in a sleeve 3 in a bore 1 of the body 2. The sleeve 3 has a circular groove 15 which receives an eccentric extension 14 of a member 13 rotation of which therefore effects axial movement of the sleeve 3 to determine the air gap between the magnet 5 and the drag disc 7. An adjustable screw fixes the sleeve 3 in the selected position. In another example, not shown, the sleeve 3 has a helical groove engaged by the inner end of a screw adjustable in the body 2. In a third example, not shown, a pin screwed to the sleeve extends through an inclined slot in the body 2.
GB4440/54A 1953-10-17 1954-02-15 Improvements in or relating to eddy-current speed or rate indicators Expired GB750838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB444055A GB801557A (en) 1954-02-15 1954-08-04 Improved printing screens of the stencil type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT750838X 1953-10-17

Publications (1)

Publication Number Publication Date
GB750838A true GB750838A (en) 1956-06-20

Family

ID=11315654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4440/54A Expired GB750838A (en) 1953-10-17 1954-02-15 Improvements in or relating to eddy-current speed or rate indicators

Country Status (1)

Country Link
GB (1) GB750838A (en)

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