FR1033573A - Telescopic device giving uniform pressure and applicable, in particular, to perforators, jacks or other devices, of variable length - Google Patents

Telescopic device giving uniform pressure and applicable, in particular, to perforators, jacks or other devices, of variable length

Info

Publication number
FR1033573A
FR1033573A FR1033573DA FR1033573A FR 1033573 A FR1033573 A FR 1033573A FR 1033573D A FR1033573D A FR 1033573DA FR 1033573 A FR1033573 A FR 1033573A
Authority
FR
France
Prior art keywords
perforators
jacks
applicable
devices
variable length
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
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.)
Joy Manufacturing Co
Original Assignee
Joy Manufacturing Co
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 Joy Manufacturing Co filed Critical Joy Manufacturing Co
Application granted granted Critical
Publication of FR1033573A publication Critical patent/FR1033573A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR1033573D 1950-04-05 1951-01-12 Telescopic device giving uniform pressure and applicable, in particular, to perforators, jacks or other devices, of variable length Expired FR1033573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1033573XA 1950-04-05 1950-04-05

Publications (1)

Publication Number Publication Date
FR1033573A true FR1033573A (en) 1953-07-13

Family

ID=22294748

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1033573D Expired FR1033573A (en) 1950-04-05 1951-01-12 Telescopic device giving uniform pressure and applicable, in particular, to perforators, jacks or other devices, of variable length

Country Status (1)

Country Link
FR (1) FR1033573A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2300183A1 (en) * 1972-01-03 1973-07-26 Robbins Co DRILLING MACHINE
FR2520438A1 (en) * 1982-01-22 1983-07-29 Pele Cie Slideway for pneumatic hammer drill - where elastic bush on bottom end of slideway is expanded by hydraulic jack to anchor slideway in hole in ground

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2300183A1 (en) * 1972-01-03 1973-07-26 Robbins Co DRILLING MACHINE
FR2520438A1 (en) * 1982-01-22 1983-07-29 Pele Cie Slideway for pneumatic hammer drill - where elastic bush on bottom end of slideway is expanded by hydraulic jack to anchor slideway in hole in ground

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