GB1107638A - A proximity switch arrangement - Google Patents

A proximity switch arrangement

Info

Publication number
GB1107638A
GB1107638A GB379266A GB379266A GB1107638A GB 1107638 A GB1107638 A GB 1107638A GB 379266 A GB379266 A GB 379266A GB 379266 A GB379266 A GB 379266A GB 1107638 A GB1107638 A GB 1107638A
Authority
GB
United Kingdom
Prior art keywords
movement
magnet
switches
energized
jan
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
GB379266A
Inventor
Christopher Peter Bass
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB379266A priority Critical patent/GB1107638A/en
Priority to FR92614A priority patent/FR1509481A/en
Publication of GB1107638A publication Critical patent/GB1107638A/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
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/06—Switches operated by change of speed
    • H01H35/12—Switches operated by change of speed operated by reversal of direction of movement

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)

Abstract

1,107,638. Direction indicating circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 10 Jan., 1967 [27 Jan., 1966], No. 3792/66. Heading G4H. [Also in Division H1] The direction of relative movement between two parts is indicated by a switch circuit on one part comprising two reed switches RS1, RS2, operable in succession by a magnet on the other part, the order of operation being determined by the direction of movement, there being corresponding relays RL1, RL2, each of which may be energized through a contact RL2/1, RL2/2 of the other, the first to be actuated serving to prevent the other being energized, and providing an output at T1 or T2 to indicate the direction of movement. The apparatus may be applied to indicate the amount of extension of a ram controlling a walking chock'in a coal-mine. There may be a series of magnets along the ram moving in turn past a pair of switches. Signals are given on appropriate leads according to the direction of movement and a reversible counter receiving the forward and backward signals indicates the position. Alternatively there may be a single magnet and a series of switch pairs, or a single magnet and a single switch pair on one part and a magnetic screen, e.g. of soft iron, passing between them on the other part, the screen having openings to allow the magnet to affect the switches.
GB379266A 1966-01-27 1966-01-27 A proximity switch arrangement Expired GB1107638A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB379266A GB1107638A (en) 1966-01-27 1966-01-27 A proximity switch arrangement
FR92614A FR1509481A (en) 1966-01-27 1967-01-26 Switching device indicating the direction of the relative movement of two parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB379266A GB1107638A (en) 1966-01-27 1966-01-27 A proximity switch arrangement

Publications (1)

Publication Number Publication Date
GB1107638A true GB1107638A (en) 1968-03-27

Family

ID=9764994

Family Applications (1)

Application Number Title Priority Date Filing Date
GB379266A Expired GB1107638A (en) 1966-01-27 1966-01-27 A proximity switch arrangement

Country Status (2)

Country Link
FR (1) FR1509481A (en)
GB (1) GB1107638A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30928E (en) 1977-06-23 1982-05-11 Caterpillar Tractor Co. Engine control
GB2129218A (en) * 1982-09-29 1984-05-10 Electronic Components Ltd Direction indicator cancellation device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30928E (en) 1977-06-23 1982-05-11 Caterpillar Tractor Co. Engine control
GB2129218A (en) * 1982-09-29 1984-05-10 Electronic Components Ltd Direction indicator cancellation device

Also Published As

Publication number Publication date
FR1509481A (en) 1968-01-12

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