GB2338008B - A retaining device - Google Patents

A retaining device

Info

Publication number
GB2338008B
GB2338008B GB9911992A GB9911992A GB2338008B GB 2338008 B GB2338008 B GB 2338008B GB 9911992 A GB9911992 A GB 9911992A GB 9911992 A GB9911992 A GB 9911992A GB 2338008 B GB2338008 B GB 2338008B
Authority
GB
United Kingdom
Prior art keywords
retaining device
retaining
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 - Lifetime
Application number
GB9911992A
Other versions
GB2338008A (en
GB9911992D0 (en
Inventor
Owen Walmsley
Robert Emmett
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.)
BSW Ltd
Original Assignee
BSW 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
Priority claimed from GBGB9812080.1A external-priority patent/GB9812080D0/en
Application filed by BSW Ltd filed Critical BSW Ltd
Priority to GB9911992A priority Critical patent/GB2338008B/en
Publication of GB9911992D0 publication Critical patent/GB9911992D0/en
Publication of GB2338008A publication Critical patent/GB2338008A/en
Application granted granted Critical
Publication of GB2338008B publication Critical patent/GB2338008B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/10—Slips; Spiders ; Catching devices
    • E21B19/102—Slips; Spiders ; Catching devices using rollers or spherical balls as load gripping elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Load-Engaging Elements For Cranes (AREA)
GB9911992A 1998-06-05 1999-05-25 A retaining device Expired - Lifetime GB2338008B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9911992A GB2338008B (en) 1998-06-05 1999-05-25 A retaining device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9812080.1A GB9812080D0 (en) 1998-06-05 1998-06-05 A retaining device
GB9911992A GB2338008B (en) 1998-06-05 1999-05-25 A retaining device

Publications (3)

Publication Number Publication Date
GB9911992D0 GB9911992D0 (en) 1999-07-21
GB2338008A GB2338008A (en) 1999-12-08
GB2338008B true GB2338008B (en) 2002-08-28

Family

ID=26313796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9911992A Expired - Lifetime GB2338008B (en) 1998-06-05 1999-05-25 A retaining device

Country Status (1)

Country Link
GB (1) GB2338008B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107503695A (en) * 2017-10-18 2017-12-22 徐工集团工程机械有限公司 A kind of drill rod grip device of clamper and multifunctional drill

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2424932A (en) * 2005-04-06 2006-10-11 Bsw Ltd Gripping device with helically or randomly arranged members to avoid excessive grooving
GB2502962B (en) * 2012-06-11 2017-02-22 Balltec Ltd Roller slip
CN108590546B (en) * 2018-07-04 2023-05-26 中国地质大学（北京） Power drilling tool experiment righting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1561343A (en) * 1975-10-20 1980-02-20 Pradon J Grippers
GB2146091A (en) * 1983-08-25 1985-04-11 Emmett Robert Improvements in or relating to clamps
GB2220018A (en) * 1988-06-21 1989-12-28 Cooper Ind Inc An emergency suspension system for drill casings.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1561343A (en) * 1975-10-20 1980-02-20 Pradon J Grippers
GB2146091A (en) * 1983-08-25 1985-04-11 Emmett Robert Improvements in or relating to clamps
GB2220018A (en) * 1988-06-21 1989-12-28 Cooper Ind Inc An emergency suspension system for drill casings.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107503695A (en) * 2017-10-18 2017-12-22 徐工集团工程机械有限公司 A kind of drill rod grip device of clamper and multifunctional drill

Also Published As

Publication number Publication date
GB2338008A (en) 1999-12-08
GB9911992D0 (en) 1999-07-21

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20190524