GB8820285D0 - Cam lock roof support - Google Patents

Cam lock roof support

Info

Publication number
GB8820285D0
GB8820285D0 GB888820285A GB8820285A GB8820285D0 GB 8820285 D0 GB8820285 D0 GB 8820285D0 GB 888820285 A GB888820285 A GB 888820285A GB 8820285 A GB8820285 A GB 8820285A GB 8820285 D0 GB8820285 D0 GB 8820285D0
Authority
GB
United Kingdom
Prior art keywords
roof support
cam lock
lock roof
cam
support
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.)
Withdrawn
Application number
GB888820285A
Other versions
GB2209549A (en
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.)
PISCITELLI A
Original Assignee
PISCITELLI A
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 PISCITELLI A filed Critical PISCITELLI A
Publication of GB8820285D0 publication Critical patent/GB8820285D0/en
Publication of GB2209549A publication Critical patent/GB2209549A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/40—Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
GB8820285A 1987-08-26 1988-08-26 Telescopic mine roof-support Withdrawn GB2209549A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPI398887 1987-08-26

Publications (2)

Publication Number Publication Date
GB8820285D0 true GB8820285D0 (en) 1988-09-28
GB2209549A GB2209549A (en) 1989-05-17

Family

ID=3772411

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8820285A Withdrawn GB2209549A (en) 1987-08-26 1988-08-26 Telescopic mine roof-support

Country Status (1)

Country Link
GB (1) GB2209549A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5499890A (en) * 1994-07-08 1996-03-19 Americ Corporation Trench shoring device with locking mechanism
AU6362998A (en) * 1996-08-08 1999-11-04 Harmen Reinaldus Vogelzang A pit prop
US7134810B2 (en) 2002-02-22 2006-11-14 Jennmar Corporation Yieldable prop having a yield section
NZ524383A (en) 2002-02-22 2004-12-24 Jennmar Corp Yieldable prop
US9267375B2 (en) * 2010-02-19 2016-02-23 Council Of Scientific & Industrial Research Device for roof support of underground mine/tunnel

Also Published As

Publication number Publication date
GB2209549A (en) 1989-05-17

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)