GB2591129B - Jack assembly for use in propping systems - Google Patents

Jack assembly for use in propping systems Download PDF

Info

Publication number
GB2591129B
GB2591129B GB2000720.9A GB202000720A GB2591129B GB 2591129 B GB2591129 B GB 2591129B GB 202000720 A GB202000720 A GB 202000720A GB 2591129 B GB2591129 B GB 2591129B
Authority
GB
United Kingdom
Prior art keywords
jack assembly
propping
systems
propping systems
jack
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.)
Active
Application number
GB2000720.9A
Other versions
GB2591129A (en
GB202000720D0 (en
Inventor
Douglas Hesketh Stephen
John Horrocks Mark
Phan Nigel
Mark Carter Christopher
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.)
MGF TRENCH CONSTRUCTION SYSTEMS Ltd
Original Assignee
MGF TRENCH CONSTRUCTION SYSTEMS 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 MGF TRENCH CONSTRUCTION SYSTEMS Ltd filed Critical MGF TRENCH CONSTRUCTION SYSTEMS Ltd
Priority to GB2000720.9A priority Critical patent/GB2591129B/en
Publication of GB202000720D0 publication Critical patent/GB202000720D0/en
Publication of GB2591129A publication Critical patent/GB2591129A/en
Application granted granted Critical
Publication of GB2591129B publication Critical patent/GB2591129B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/24—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F2700/00—Lifting apparatus
    • B66F2700/04—Jacks with screw and nut
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G2025/003—Supports therefor, e.g. tripods
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G2025/006—Heads therefor, e.g. pivotable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
GB2000720.9A 2020-01-17 2020-01-17 Jack assembly for use in propping systems Active GB2591129B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2000720.9A GB2591129B (en) 2020-01-17 2020-01-17 Jack assembly for use in propping systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2000720.9A GB2591129B (en) 2020-01-17 2020-01-17 Jack assembly for use in propping systems

Publications (3)

Publication Number Publication Date
GB202000720D0 GB202000720D0 (en) 2020-03-04
GB2591129A GB2591129A (en) 2021-07-21
GB2591129B true GB2591129B (en) 2024-02-14

Family

ID=69636875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2000720.9A Active GB2591129B (en) 2020-01-17 2020-01-17 Jack assembly for use in propping systems

Country Status (1)

Country Link
GB (1) GB2591129B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB821802A (en) * 1957-01-30 1959-10-14 Oscar Rieder Improvements in or relating to telescopic props
US3927863A (en) * 1974-09-03 1975-12-23 George Polsky Transportable jack
US4014519A (en) * 1976-01-30 1977-03-29 Fmc Corporation Hydraulic jack with mechanical locking device
EP0100333A1 (en) * 1982-02-10 1984-02-15 McGRATH, Colin Adjustable brace or prop
CN205743074U (en) * 2016-07-06 2016-11-30 金京娜 A kind of adjustable for height support for building

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB821802A (en) * 1957-01-30 1959-10-14 Oscar Rieder Improvements in or relating to telescopic props
US3927863A (en) * 1974-09-03 1975-12-23 George Polsky Transportable jack
US4014519A (en) * 1976-01-30 1977-03-29 Fmc Corporation Hydraulic jack with mechanical locking device
EP0100333A1 (en) * 1982-02-10 1984-02-15 McGRATH, Colin Adjustable brace or prop
CN205743074U (en) * 2016-07-06 2016-11-30 金京娜 A kind of adjustable for height support for building

Also Published As

Publication number Publication date
GB2591129A (en) 2021-07-21
GB202000720D0 (en) 2020-03-04

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