AU464341B2 - Improvements relating to advancing roof supports for mine workings - Google Patents

Improvements relating to advancing roof supports for mine workings

Info

Publication number
AU464341B2
AU464341B2 AU32201/71A AU3220171A AU464341B2 AU 464341 B2 AU464341 B2 AU 464341B2 AU 32201/71 A AU32201/71 A AU 32201/71A AU 3220171 A AU3220171 A AU 3220171A AU 464341 B2 AU464341 B2 AU 464341B2
Authority
AU
Australia
Prior art keywords
improvements relating
roof supports
mine workings
advancing roof
advancing
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
Application number
AU32201/71A
Other versions
AU3220171A (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.)
Individual
Original Assignee
Individual
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 DE19702040179 external-priority patent/DE2040179C/en
Application filed by Individual filed Critical Individual
Publication of AU3220171A publication Critical patent/AU3220171A/en
Application granted granted Critical
Publication of AU464341B2 publication Critical patent/AU464341B2/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
AU32201/71A 1970-08-13 1971-08-10 Improvements relating to advancing roof supports for mine workings Expired AU464341B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEDE8204017 1970-08-13
DE19702040179 DE2040179C (en) 1970-08-13 Hydraulically operated device for laterally resetting the caps of traveling support units advancing in two steps for steep storage

Publications (2)

Publication Number Publication Date
AU3220171A AU3220171A (en) 1973-02-15
AU464341B2 true AU464341B2 (en) 1975-08-21

Family

ID=5779589

Family Applications (1)

Application Number Title Priority Date Filing Date
AU32201/71A Expired AU464341B2 (en) 1970-08-13 1971-08-10 Improvements relating to advancing roof supports for mine workings

Country Status (5)

Country Link
US (1) US3800545A (en)
AU (1) AU464341B2 (en)
GB (1) GB1349657A (en)
PL (1) PL77790B1 (en)
RO (1) RO61311A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141040C1 (en) * 1981-10-15 1983-03-31 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Hydraulic expansion frame

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490243A (en) * 1966-11-16 1970-01-20 Karl Maria Groetschel Roof supports for mine workings
BE727824A (en) * 1968-03-12 1969-07-16
GB1287096A (en) * 1968-10-17 1972-08-31 Karl Maria Groetschel Improvements relating to advancing roof supports for mine workings

Also Published As

Publication number Publication date
PL77790B1 (en) 1975-04-30
US3800545A (en) 1974-04-02
RO61311A (en) 1976-12-15
GB1349657A (en) 1974-04-10
DE2040179B1 (en) 1971-08-05
AU3220171A (en) 1973-02-15

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