GB1500271A - Lift safety device - Google Patents

Lift safety device

Info

Publication number
GB1500271A
GB1500271A GB5090173A GB5090173A GB1500271A GB 1500271 A GB1500271 A GB 1500271A GB 5090173 A GB5090173 A GB 5090173A GB 5090173 A GB5090173 A GB 5090173A GB 1500271 A GB1500271 A GB 1500271A
Authority
GB
United Kingdom
Prior art keywords
car
hydraulic
catch gear
ram
gear
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
GB5090173A
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.)
Becker Equipment & Lifts Ltd
Original Assignee
Becker Equipment & Lifts 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 Becker Equipment & Lifts Ltd filed Critical Becker Equipment & Lifts Ltd
Priority to GB5090173A priority Critical patent/GB1500271A/en
Publication of GB1500271A publication Critical patent/GB1500271A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/028—Safety devices separate from control system in case of power failure, for hydraulical lifts, e.g. braking the hydraulic jack

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Types And Forms Of Lifts (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

1500271 Elevator catch gear BECKER EQUIPMENT & LIFTS Ltd 3 Feb 1975 [1 Nov 1973] 50901/73 Heading B8L Safety gear for a lift car 10 vertically movable in a shaft 12 by an hydraulic piston and cylinder arrangement 13, 14, 15 comprises an hydraulic ram 21, 22, 23 in hydraulic communication with the chamber 16 of the car lifting ram 13, 14, 15 and which maintains catch gear 18 on the car 10 in the inoperative position unless the hydraulic pressure falls below a predetermined level when the car 10 would otherwise fall. The catch gear 18 comprising cams is spring biased towards the operative position in which it locks the lift car to guide rails 11 along which the car moves. The hydraulic communication between the pressure chambers 23 and 16 of the two rams is either by means of a tube 24, passing through the cylinder rod 13 of the lifting ram or by means of loose tubing.
GB5090173A 1973-11-01 1973-11-01 Lift safety device Expired GB1500271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5090173A GB1500271A (en) 1973-11-01 1973-11-01 Lift safety device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5090173A GB1500271A (en) 1973-11-01 1973-11-01 Lift safety device

Publications (1)

Publication Number Publication Date
GB1500271A true GB1500271A (en) 1978-02-08

Family

ID=10457827

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5090173A Expired GB1500271A (en) 1973-11-01 1973-11-01 Lift safety device

Country Status (1)

Country Link
GB (1) GB1500271A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2025635A1 (en) * 2007-08-16 2009-02-18 William Mark Adams Movement apparatus
CN107381290A (en) * 2017-09-07 2017-11-24 山东天和纸业有限公司 Lift Cargo Lift anti-falling safety device and lifting Cargo Lift
CN108100801A (en) * 2018-01-04 2018-06-01 桐城市靖伦塑料有限公司 Hydraulic elevator safety device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2025635A1 (en) * 2007-08-16 2009-02-18 William Mark Adams Movement apparatus
CN107381290A (en) * 2017-09-07 2017-11-24 山东天和纸业有限公司 Lift Cargo Lift anti-falling safety device and lifting Cargo Lift
CN107381290B (en) * 2017-09-07 2023-09-19 山东天和纸业有限公司 Lifting goods elevator
CN108100801A (en) * 2018-01-04 2018-06-01 桐城市靖伦塑料有限公司 Hydraulic elevator safety device

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Legal Events

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