ZA839487B - Hydraulic control arrangement - Google Patents

Hydraulic control arrangement

Info

Publication number: ZA839487B
Authority: ZA; South Africa
Prior art keywords: hydraulic control; control arrangement; arrangement; hydraulic; control
Prior art date: 1982-12-22

Application number

ZA839487A

Other languages

English (en)

Inventor

Walter Weirich

Michael Dettmers

Original Assignee

Gewerk Eisenhuette Westfalia

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.)

1982-12-22

Filing date

1983-12-21

Publication date

1984-08-29

1983-12-21 Application filed by Gewerk Eisenhuette Westfalia filed Critical Gewerk Eisenhuette Westfalia

1984-08-29 Publication of ZA839487B publication Critical patent/ZA839487B/xx

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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms

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)
Keying Circuit Devices (AREA)

ZA839487A 1982-12-22 1983-12-21 Hydraulic control arrangement ZA839487B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE3247367		1982-12-22

Publications (1)

Publication Number	Publication Date
ZA839487B true ZA839487B (en)	1984-08-29

Family

ID=6181325

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA839487A ZA839487B (en)	1982-12-22	1983-12-21	Hydraulic control arrangement

Country Status (2)

Country	Link
BE (1)	BE898526A (fr)
ZA (1)	ZA839487B (fr)

1983
- 1983-12-21 ZA ZA839487A patent/ZA839487B/xx unknown
- 1983-12-22 BE BE0/212092A patent/BE898526A/fr not_active IP Right Cessation

Also Published As

Publication number	Publication date
BE898526A (fr)	1984-04-16

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