GB2103693B - Mine-roof supports - Google Patents

Mine-roof supports

Info

Publication number: GB2103693B
Authority: GB; United Kingdom
Prior art keywords: mine; roof supports; roof; supports
Prior art date: 1981-08-07
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

GB08124219A

Other versions

GB2103693A (en

Inventor

Richard Arthur Naylor

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.)

DOWTY HUCKNALL Ltd

Original Assignee

DOWTY HUCKNALL 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.)

1981-08-07

Filing date

1981-08-07

Publication date

1984-09-05

1981-08-07 Application filed by DOWTY HUCKNALL Ltd filed Critical DOWTY HUCKNALL Ltd

1981-08-07 Priority to GB08124219A priority Critical patent/GB2103693B/en

1982-07-19 Priority to CA000407538A priority patent/CA1165572A/en

1983-02-23 Publication of GB2103693A publication Critical patent/GB2103693A/en

1984-09-05 Application granted granted Critical

1984-09-05 Publication of GB2103693B publication Critical patent/GB2103693B/en

Status Expired legal-status Critical Current

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
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
- E21D23/0013—Frame type supports
- 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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
- E21D23/063—Retractable cantilever extensions 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)
Architecture (AREA)
Structural Engineering (AREA)
Body Structure For Vehicles (AREA)
Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

GB08124219A 1981-08-07 1981-08-07 Mine-roof supports Expired GB2103693B (en)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
GB08124219A GB2103693B (en)	1981-08-07	1981-08-07	Mine-roof supports
CA000407538A CA1165572A (en)	1981-08-07	1982-07-19	Mine-roof supports

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB08124219A GB2103693B (en)	1981-08-07	1981-08-07	Mine-roof supports

Publications (2)

Publication Number	Publication Date
GB2103693A GB2103693A (en)	1983-02-23
GB2103693B true GB2103693B (en)	1984-09-05

Family

ID=10523784

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB08124219A Expired GB2103693B (en)	1981-08-07	1981-08-07	Mine-roof supports

Country Status (2)

Country	Link
CA (1)	CA1165572A (en)
GB (1)	GB2103693B (en)

1981
- 1981-08-07 GB GB08124219A patent/GB2103693B/en not_active Expired
1982
- 1982-07-19 CA CA000407538A patent/CA1165572A/en not_active Expired

Also Published As

Publication number	Publication date
GB2103693A (en)	1983-02-23
CA1165572A (en)	1984-04-17

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Legal Events

Date	Code	Title	Description
1986-04-03	PCNP	Patent ceased through non-payment of renewal fee