GB8815085D0 - Mine roof support - Google Patents

Mine roof support

Info

Publication number: GB8815085D0
Authority: GB; United Kingdom
Prior art keywords: roof support; mine roof; mine; support; roof
Prior art date: 1988-06-24
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.): Granted

Application number

GB888815085A

Other versions

GB2220022B (en

GB2220022A (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.)

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.)

1988-06-24

Filing date

1988-06-24

Publication date

1988-08-03

1988-06-24 Application filed by DOWTY HUCKNALL Ltd filed Critical DOWTY HUCKNALL Ltd

1988-06-24 Priority to GB8815085A priority Critical patent/GB2220022B/en

1988-08-03 Publication of GB8815085D0 publication Critical patent/GB8815085D0/en

1989-12-28 Publication of GB2220022A publication Critical patent/GB2220022A/en

1992-06-10 Application granted granted Critical

1992-06-10 Publication of GB2220022B publication Critical patent/GB2220022B/en

2008-06-24 Anticipated expiration legal-status Critical

Status 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
- E21D23/04—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

Landscapes

Engineering & Computer Science (AREA)
Mining & Mineral Resources (AREA)
Architecture (AREA)
Structural Engineering (AREA)
Life Sciences & Earth Sciences (AREA)
General Life Sciences & Earth Sciences (AREA)
Geochemistry & Mineralogy (AREA)
Geology (AREA)
Body Structure For Vehicles (AREA)

GB8815085A 1988-06-24 1988-06-24 Mine roof support Expired - Fee Related GB2220022B (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
GB8815085A GB2220022B (en)	1988-06-24	1988-06-24	Mine roof support

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB8815085A GB2220022B (en)	1988-06-24	1988-06-24	Mine roof support

Publications (3)

Publication Number	Publication Date
GB8815085D0 true GB8815085D0 (en)	1988-08-03
GB2220022A GB2220022A (en)	1989-12-28
GB2220022B GB2220022B (en)	1992-06-10

Family

ID=10639305

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB8815085A Expired - Fee Related GB2220022B (en)	1988-06-24	1988-06-24	Mine roof support

Country Status (1)

Country	Link
GB (1)	GB2220022B (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1364221A (en) *	1973-01-18	1974-08-21	Podmoskovny Ni Pk Ugolny Inst	Hydraulically controlled roof support
GB1583647A (en) *	1976-09-24	1981-01-28	Huwood Ltd	Mine roof supports
GB2082236B (en) *	1980-08-06	1984-03-07	Dowty Mining Equipment Ltd	Mine roof support with cantilever extension on roof plate
GB2115048B (en) *	1982-02-02	1985-08-29	Dobson Park Ind	Mine roof supports
GB2196371B (en) *	1986-10-15	1990-05-09	Gullick Dobson Ltd	Mine roof supports

1988
- 1988-06-24 GB GB8815085A patent/GB2220022B/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
GB2220022B (en)	1992-06-10
GB2220022A (en)	1989-12-28

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Legal Events

Date	Code	Title	Description
1994-02-23	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19930624