GB1233777A - - Google Patents

Info

Publication number
GB1233777A
GB1233777A GB1233777DA GB1233777A GB 1233777 A GB1233777 A GB 1233777A GB 1233777D A GB1233777D A GB 1233777DA GB 1233777 A GB1233777 A GB 1233777A
Authority
GB
United Kingdom
Prior art keywords
bolt
cylindrical portion
tensioned
pistons
rod
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
Other languages
English (en)
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 filed Critical
Publication of GB1233777A publication Critical patent/GB1233777A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/008—Anchoring or tensioning means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B29/00—Accessories
    • B25B29/02—Bolt tensioners
    • 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
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Reciprocating Pumps (AREA)
GB1233777D 1968-11-04 1968-11-04 Expired GB1233777A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5224168 1968-11-04

Publications (1)

Publication Number Publication Date
GB1233777A true GB1233777A (de) 1971-05-26

Family

ID=10463161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1233777D Expired GB1233777A (de) 1968-11-04 1968-11-04

Country Status (1)

Country Link
GB (1) GB1233777A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010906A1 (de) * 1978-10-23 1980-05-14 Inco Alloy Products Limited Verschraubung für Blow-out-Preventer
GB2344867A (en) * 1998-12-17 2000-06-21 Nicholas More Hydraulic bolt tensioner
CN107511788A (zh) * 2017-08-24 2017-12-26 北京动力机械研究所 螺纹预紧装配结构
CN109911802A (zh) * 2019-02-22 2019-06-21 浙江盈瑞数字科技有限公司 一种手动液压柱体撑开装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010906A1 (de) * 1978-10-23 1980-05-14 Inco Alloy Products Limited Verschraubung für Blow-out-Preventer
GB2344867A (en) * 1998-12-17 2000-06-21 Nicholas More Hydraulic bolt tensioner
GB2344867B (en) * 1998-12-17 2002-06-26 Nicholas More Hydraulic bolt tensioner
CN107511788A (zh) * 2017-08-24 2017-12-26 北京动力机械研究所 螺纹预紧装配结构
CN109911802A (zh) * 2019-02-22 2019-06-21 浙江盈瑞数字科技有限公司 一种手动液压柱体撑开装置

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Legal Events

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