BE529866A - - Google Patents

Info

Publication number: BE529866A
Authority: BE; Belgium

Application number

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.)

1953-06-25

Publication of BE529866A publication Critical patent/BE529866A/xx

Classifications

- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/517—Extension elements
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/58—Devices for setting props or chocks
- E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
- E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
- 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
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- 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
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices

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)
Mechanical Engineering (AREA)
Structural Engineering (AREA)
On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

BE529866D 1953-06-25 BE529866A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE764194X		1953-06-25

Publications (1)

Publication Number	Publication Date
BE529866A true BE529866A (enrdf_load_html_response)

Family

ID=6672821

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE529866D BE529866A (enrdf_load_html_response)	1953-06-25

Country Status (4)

Country	Link
BE (1)	BE529866A (enrdf_load_html_response)
FR (1)	FR1109074A (enrdf_load_html_response)
GB (1)	GB764194A (enrdf_load_html_response)
NL (1)	NL188688B (enrdf_load_html_response)

0
- NL NLAANVRAGE7803335,A patent/NL188688B/xx unknown
- BE BE529866D patent/BE529866A/xx unknown
1954
- 1954-06-25 FR FR1109074D patent/FR1109074A/fr not_active Expired
- 1954-06-25 GB GB18697/54A patent/GB764194A/en not_active Expired

Also Published As

Publication number	Publication date
NL188688B (nl)
FR1109074A (fr)	1956-01-20
GB764194A (en)	1956-12-19

Publication	Publication Date	Title
BE521730A (enrdf_load_html_response)	1955-09-20
AT190646B (enrdf_load_html_response)	1957-07-10
AT191026B (enrdf_load_html_response)	1957-07-25
BE521757A (enrdf_load_html_response)	1955-09-30
AT194074B (enrdf_load_html_response)	1957-12-27
BE527278A (enrdf_load_html_response)	1956-10-12
BE526631A (enrdf_load_html_response)
BE527105A (enrdf_load_html_response)
BE520988A (enrdf_load_html_response)
BE521089A (enrdf_load_html_response)	1955-08-05
BE521312A (enrdf_load_html_response)	1953-07-31
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BE520230A (enrdf_load_html_response)
BE518031A (enrdf_load_html_response)
BE523109A (enrdf_load_html_response)	1956-01-06
BE523231A (enrdf_load_html_response)
BE523710A (enrdf_load_html_response)
BE525648A (enrdf_load_html_response)	1956-06-08
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BE526330A (enrdf_load_html_response)
BE526537A (enrdf_load_html_response)
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BE529866A (enrdf_load_html_response)