GB2216941B - Connection devices - Google Patents

Connection devices

Info

Publication number
GB2216941B
GB2216941B GB8807880A GB8807880A GB2216941B GB 2216941 B GB2216941 B GB 2216941B GB 8807880 A GB8807880 A GB 8807880A GB 8807880 A GB8807880 A GB 8807880A GB 2216941 B GB2216941 B GB 2216941B
Authority
GB
United Kingdom
Prior art keywords
connection devices
devices
connection
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 - Fee Related
Application number
GB8807880A
Other versions
GB2216941A (en
GB8807880D0 (en
Inventor
Tom Carl Bithell
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.)
Gullick Dobson Ltd
Original Assignee
Gullick Dobson 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 Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Priority to GB8807880A priority Critical patent/GB2216941B/en
Publication of GB8807880D0 publication Critical patent/GB8807880D0/en
Publication of GB2216941A publication Critical patent/GB2216941A/en
Application granted granted Critical
Publication of GB2216941B publication Critical patent/GB2216941B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • E21D23/085—Advancing mechanisms forming parts of the roof supports acting on a conveyor or a guide for the mining machine
    • E21D23/086—Details of fixing devices therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
GB8807880A 1988-04-05 1988-04-05 Connection devices Expired - Fee Related GB2216941B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8807880A GB2216941B (en) 1988-04-05 1988-04-05 Connection devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8807880A GB2216941B (en) 1988-04-05 1988-04-05 Connection devices

Publications (3)

Publication Number Publication Date
GB8807880D0 GB8807880D0 (en) 1988-05-05
GB2216941A GB2216941A (en) 1989-10-18
GB2216941B true GB2216941B (en) 1992-04-22

Family

ID=10634550

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8807880A Expired - Fee Related GB2216941B (en) 1988-04-05 1988-04-05 Connection devices

Country Status (1)

Country Link
GB (1) GB2216941B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2526074C2 (en) * 2013-01-09 2014-08-20 Черных Николай Георгиевич Mechanised second working complex

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1152842A (en) * 1965-06-01 1969-05-21 Dowty Mining Equipment Ltd Roof Support Assembly suitable for use in Mines
GB2082661A (en) * 1980-08-23 1982-03-10 Dobson Park Ind Improvements in or relating to mining equipment
US4571003A (en) * 1983-01-07 1986-02-18 Gewerkschaft Eisenhutte Westfalia Apparatus for controlling the position of a mineral mining machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1152842A (en) * 1965-06-01 1969-05-21 Dowty Mining Equipment Ltd Roof Support Assembly suitable for use in Mines
GB2082661A (en) * 1980-08-23 1982-03-10 Dobson Park Ind Improvements in or relating to mining equipment
US4571003A (en) * 1983-01-07 1986-02-18 Gewerkschaft Eisenhutte Westfalia Apparatus for controlling the position of a mineral mining machine

Also Published As

Publication number Publication date
GB2216941A (en) 1989-10-18
GB8807880D0 (en) 1988-05-05

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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)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060405