FR512593A - Expander device using compressed air rams - Google Patents

Expander device using compressed air rams

Info

Publication number
FR512593A
FR512593A FR512593A FR512593DA FR512593A FR 512593 A FR512593 A FR 512593A FR 512593 A FR512593 A FR 512593A FR 512593D A FR512593D A FR 512593DA FR 512593 A FR512593 A FR 512593A
Authority
FR
France
Prior art keywords
compressed air
expander device
air rams
rams
expander
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
FR512593A
Other languages
French (fr)
Inventor
Guillaume Weber
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR512593A publication Critical patent/FR512593A/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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools

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)
FR512593A 1914-12-19 1916-04-07 Expander device using compressed air rams Expired FR512593A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE512593X 1914-12-19

Publications (1)

Publication Number Publication Date
FR512593A true FR512593A (en) 1921-01-26

Family

ID=6548169

Family Applications (1)

Application Number Title Priority Date Filing Date
FR512593A Expired FR512593A (en) 1914-12-19 1916-04-07 Expander device using compressed air rams

Country Status (1)

Country Link
FR (1) FR512593A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112982406A (en) * 2021-03-22 2021-06-18 高雷 Concrete pouring pile machine for building engineering and use method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112982406A (en) * 2021-03-22 2021-06-18 高雷 Concrete pouring pile machine for building engineering and use method thereof

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