GB1418482A - Speedometers - Google Patents

Speedometers

Info

Publication number
GB1418482A
GB1418482A GB1798172A GB1798172A GB1418482A GB 1418482 A GB1418482 A GB 1418482A GB 1798172 A GB1798172 A GB 1798172A GB 1798172 A GB1798172 A GB 1798172A GB 1418482 A GB1418482 A GB 1418482A
Authority
GB
United Kingdom
Prior art keywords
speed
generator
tube
terminals
craft
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
GB1798172A
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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 Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB1798172A priority Critical patent/GB1418482A/en
Publication of GB1418482A publication Critical patent/GB1418482A/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
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
    • G01P5/06—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using rotation of vanes
    • G01P5/07—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using rotation of vanes with electrical coupling to the indicating device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/04—Special adaptations of driving means

Abstract

1418482 Measuring speed electrically SMITHS INDUSTRIES Ltd 4 May 1973 [18 April 1972] 17981/72 Heading G1N The speed of a water craft is measured by a bladed screw 10 which drives, via a flexible member 30, and a rigid tube 60, an electromagnetic generator 22 comprising a permanent magnet rotating with respect to a fixed coil. The frequency of the A.C. is dependent on the screw speed, and this signal is rectified and used to indicate speed. As shown terminals 34 from the generator are U-shaped and have projections 36 which are proud of a tubular casing 17 of the drive. The tube 17 is carried on the craft by clips Figs. 6 and 7 (not shown) which carry terminals connected to the indicator, these terminals engaging projections 36 when the tube 17 is pushed fully down. A foam rubber cushion 24 is disposed above the generator, and a handle 50 with water escape holes 24 is provided.
GB1798172A 1972-04-18 1972-04-18 Speedometers Expired GB1418482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1798172A GB1418482A (en) 1972-04-18 1972-04-18 Speedometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1798172A GB1418482A (en) 1972-04-18 1972-04-18 Speedometers

Publications (1)

Publication Number Publication Date
GB1418482A true GB1418482A (en) 1975-12-24

Family

ID=10104580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1798172A Expired GB1418482A (en) 1972-04-18 1972-04-18 Speedometers

Country Status (1)

Country Link
GB (1) GB1418482A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443940A2 (en) * 1990-02-22 1991-08-28 Snr Roulements Apparatus for sensing the direction and speed of a steering wheel shaft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443940A2 (en) * 1990-02-22 1991-08-28 Snr Roulements Apparatus for sensing the direction and speed of a steering wheel shaft
EP0443940B1 (en) * 1990-02-22 1995-08-02 Snr Roulements Apparatus for sensing the direction and speed of a steering wheel shaft

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Legal Events

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