GB1279804A - Tachometer - Google Patents

Tachometer

Info

Publication number
GB1279804A
GB1279804A GB5502468A GB5502468A GB1279804A GB 1279804 A GB1279804 A GB 1279804A GB 5502468 A GB5502468 A GB 5502468A GB 5502468 A GB5502468 A GB 5502468A GB 1279804 A GB1279804 A GB 1279804A
Authority
GB
United Kingdom
Prior art keywords
light
nov
tachometer
cell
courtaulds
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
GB5502468A
Inventor
Michael John Hare
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds 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 Courtaulds PLC filed Critical Courtaulds PLC
Priority to GB5502468A priority Critical patent/GB1279804A/en
Publication of GB1279804A publication Critical patent/GB1279804A/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
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors

Abstract

1279804 Selective signalling COURTAULDS Ltd 19 Nov 1969 [20 Nov 1968] Heading G4H A rotating member (not shown) having an optical discontinuity is sensed by a probe 2 consisting of the ends of a bundle 1 of light fibres, which are bifurcated at their other ends 4, 5 so as to carry light from a source 6 to the member, and light reflected by the member to a photo-electric cell 7, output pulses from the cell passing to a counter 9 and being used to control the intensity of the light 6.
GB5502468A 1968-11-20 1968-11-20 Tachometer Expired GB1279804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5502468A GB1279804A (en) 1968-11-20 1968-11-20 Tachometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5502468A GB1279804A (en) 1968-11-20 1968-11-20 Tachometer

Publications (1)

Publication Number Publication Date
GB1279804A true GB1279804A (en) 1972-06-28

Family

ID=10472741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5502468A Expired GB1279804A (en) 1968-11-20 1968-11-20 Tachometer

Country Status (1)

Country Link
GB (1) GB1279804A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078870A1 (en) * 1981-11-10 1983-05-18 Lionel Ivor Alfred Taylor Improvements in or relating to flowmeters
US4387785A (en) * 1979-09-12 1983-06-14 Siemens Aktiengesellschaft Optical device for monitoring critical speeds of a rotating member
US4502045A (en) * 1979-09-12 1985-02-26 Siemens Aktiengesellschaft Optical device for monitoring critical speeds of a rotating member

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387785A (en) * 1979-09-12 1983-06-14 Siemens Aktiengesellschaft Optical device for monitoring critical speeds of a rotating member
US4502045A (en) * 1979-09-12 1985-02-26 Siemens Aktiengesellschaft Optical device for monitoring critical speeds of a rotating member
EP0078870A1 (en) * 1981-11-10 1983-05-18 Lionel Ivor Alfred Taylor Improvements in or relating to flowmeters

Similar Documents

Publication Publication Date Title
SE7508599L (en) TRANSMISSION ELEMENTS INCLUDING OPTICAL FIBERS AND PROCEDURES FOR THEIR PRODUCTION
NL7514974A (en) FIBER OPTIC CLUTCH.
NL185543C (en) FIBER OPTIC CONNECTOR.
AU475394B2 (en) Optical fibres
IT1059572B (en) OPTICAL FIBER TRANSMISSION LINE
BE811435A (en) END-JOINED OPTICAL FIBERS
GB1325536A (en) Centrifuges
BE787464A (en) FIBER BEAM ASSEMBLY
GB1135183A (en) Improvements relating to optical inspection devices
GB1115681A (en) Optical fibre scanning device
GB1279804A (en) Tachometer
NO740339L (en) Fiber optic construction.
GB1399953A (en) Optical apparatus comprising an optical fibre bundle
AU5408473A (en) Optical fibres
BE832626Q (en) FIBER DYE PERFECTION
FR1442736A (en) Fiber optic cable
BE822056A (en) FREE FIBER SPINNING DEVICE
GB1215428A (en) Fibre optical system
CA945226A (en) Fibre optic signal transmission system
GB1098377A (en) Improved apparatus for detecting an electrical condition in a region of high electrical potential and transmitting an indication thereof
FR2258062A1 (en) Optical fibre signal transmission system - uses distribution head to transmit optical signal between channels
FR1526428A (en) Signal loss compensator
BE818299A (en) FREE FIBER SPINNING DEVICE
AU7866575A (en) Optical fibre signal input arrangement
BE757431A (en) LASER AND OPTICAL FIBER TRACE DETECTION.

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees