CA1020672A - Positional control - Google Patents

Positional control

Info

Publication number
CA1020672A
CA1020672A CA194,592A CA194592A CA1020672A CA 1020672 A CA1020672 A CA 1020672A CA 194592 A CA194592 A CA 194592A CA 1020672 A CA1020672 A CA 1020672A
Authority
CA
Canada
Prior art keywords
positional control
positional
control
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
CA194,592A
Other languages
English (en)
French (fr)
Other versions
CA194592S (en
Inventor
George E. Minns
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.)
Dewhurst and Partner PLC
Original Assignee
Dewhurst and Partner 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 Dewhurst and Partner PLC filed Critical Dewhurst and Partner PLC
Application granted granted Critical
Publication of CA1020672A publication Critical patent/CA1020672A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H36/0013—Permanent magnet actuating reed switches characterised by the co-operation between reed switch and permanent magnet; Magnetic circuits
    • H01H36/002—Actuation by moving ferromagnetic material, switch and magnet being fixed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
    • B66B1/40—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/46—Adaptations of switches or switchgear
    • B66B1/50—Adaptations of switches or switchgear with operating or control mechanisms mounted in the car or cage or in the lift well or hoistway

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Stopping Of Electric Motors (AREA)
  • Elevator Control (AREA)
CA194,592A 1973-03-16 1974-03-11 Positional control Expired CA1020672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1288173A GB1466671A (en) 1973-03-16 1973-03-16 Lift car braking apparatus

Publications (1)

Publication Number Publication Date
CA1020672A true CA1020672A (en) 1977-11-08

Family

ID=10012853

Family Applications (1)

Application Number Title Priority Date Filing Date
CA194,592A Expired CA1020672A (en) 1973-03-16 1974-03-11 Positional control

Country Status (6)

Country Link
US (1) US3945470A (xx)
CA (1) CA1020672A (xx)
DE (1) DE2412202A1 (xx)
GB (1) GB1466671A (xx)
NL (1) NL7402853A (xx)
ZA (1) ZA741338B (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096925A (en) * 1977-04-08 1978-06-27 Westinghouse Electric Corp. Elevator system with detector for indicating relative positions of car and counterweight
DE2906522C2 (de) * 1979-02-20 1984-04-05 Zoller & Fröhlich GmbH & Co KG, 7988 Wangen Magnetischer Näherungs-Schalter
DE112014007218B4 (de) * 2014-11-27 2019-11-21 Mitsubishi Electric Corporation Aufzugspositions-erfassungsvorrichtung
DE102016208857A1 (de) * 2016-05-23 2017-11-23 Thyssenkrupp Ag Schachtwechselanordnung für eine Aufzugsanlage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805735A (en) * 1954-10-04 1957-09-10 Staley Elevator Company Inc Control device for use in elevator shaft
US3199630A (en) * 1958-01-24 1965-08-10 Siemens Ag Position sensing devices, particularly in hoisting and conveying systems
US3207265A (en) * 1961-12-27 1965-09-21 Westinghouse Electric Corp Elevator control system
US3261427A (en) * 1963-07-24 1966-07-19 Staley Elevator Company Inc Detector for ferromagnetic material in an elevator well and an elevator control system operated thereby

Also Published As

Publication number Publication date
DE2412202A1 (de) 1974-09-19
ZA741338B (en) 1975-01-29
GB1466671A (en) 1977-03-09
US3945470A (en) 1976-03-23
NL7402853A (xx) 1974-09-18
AU6632774A (en) 1975-09-11

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