FR1455436A - telescopic prop controlled by pressurized fluid - Google Patents

telescopic prop controlled by pressurized fluid

Info

Publication number
FR1455436A
FR1455436A FR30617A FR30617A FR1455436A FR 1455436 A FR1455436 A FR 1455436A FR 30617 A FR30617 A FR 30617A FR 30617 A FR30617 A FR 30617A FR 1455436 A FR1455436 A FR 1455436A
Authority
FR
France
Prior art keywords
pressurized fluid
telescopic prop
prop controlled
controlled
telescopic
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
FR30617A
Other languages
French (fr)
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 Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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.)
Filing date
Publication date
Application filed by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Application granted granted Critical
Publication of FR1455436A publication Critical patent/FR1455436A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
FR30617A 1964-09-10 1965-09-07 telescopic prop controlled by pressurized fluid Expired FR1455436A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB37081/64A GB1114927A (en) 1964-09-10 1964-09-10 Fluid-pressure-operated telescopic prop assembly

Publications (1)

Publication Number Publication Date
FR1455436A true FR1455436A (en) 1966-04-01

Family

ID=10393575

Family Applications (1)

Application Number Title Priority Date Filing Date
FR30617A Expired FR1455436A (en) 1964-09-10 1965-09-07 telescopic prop controlled by pressurized fluid

Country Status (2)

Country Link
FR (1) FR1455436A (en)
GB (1) GB1114927A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3150643A1 (en) * 1981-12-21 1983-06-30 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen HYDRAULIC TELESCOPE STAMP, ESPECIALLY FOR UNDERGROUND SCREAM EXTENSION, LIKE, IN PARTICULAR, SHIELD EXTENSION RACK
IT1211191B (en) * 1987-07-10 1989-10-12 Op Pagliero S P A IMPROVEMENT RELATING TO THE MULTI-STAGE COAXIAL HYDRAULIC JACKS THAT CAN BE OPERATED TELESCOPICALLY AT THE SAME TIME

Also Published As

Publication number Publication date
GB1114927A (en) 1968-05-22

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