FR2370854A1 - Air motor for pneumatic drill - has intermediate chamber under air pressure to seal cooling water inlet chambers - Google Patents

Air motor for pneumatic drill - has intermediate chamber under air pressure to seal cooling water inlet chambers

Info

Publication number
FR2370854A1
FR2370854A1 FR7633905A FR7633905A FR2370854A1 FR 2370854 A1 FR2370854 A1 FR 2370854A1 FR 7633905 A FR7633905 A FR 7633905A FR 7633905 A FR7633905 A FR 7633905A FR 2370854 A1 FR2370854 A1 FR 2370854A1
Authority
FR
France
Prior art keywords
intermediate chamber
cooling water
water inlet
chamber under
inlet chambers
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.)
Granted
Application number
FR7633905A
Other languages
French (fr)
Other versions
FR2370854B1 (en
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
Priority to FR7633905A priority Critical patent/FR2370854A1/en
Publication of FR2370854A1 publication Critical patent/FR2370854A1/en
Application granted granted Critical
Publication of FR2370854B1 publication Critical patent/FR2370854B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B11/00—Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes

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)
  • General Engineering & Computer Science (AREA)
  • Drilling And Boring (AREA)

Abstract

The motor has a body with an internal cylinder and a sleeve within which the driving piston reciprocates. The sleeve within which the driving piston reciprocates. The sleeve is shaped to provide chambers at the ends of the piston and an intermediate chamber between them. Cooling water is admitted to the end chambers and can flow through longitudinal passages through the piston into a central passage in the bit. It escapes from the end of this to cool the working face and remove chips. Air is admitted to the intermediate chamber at a pressure higher than that of the cooling water in the end chambers. This prevents leakage of water out of the end chambers past the seal between them and the intermediate chamber.
FR7633905A 1976-11-10 1976-11-10 Air motor for pneumatic drill - has intermediate chamber under air pressure to seal cooling water inlet chambers Granted FR2370854A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7633905A FR2370854A1 (en) 1976-11-10 1976-11-10 Air motor for pneumatic drill - has intermediate chamber under air pressure to seal cooling water inlet chambers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7633905A FR2370854A1 (en) 1976-11-10 1976-11-10 Air motor for pneumatic drill - has intermediate chamber under air pressure to seal cooling water inlet chambers

Publications (2)

Publication Number Publication Date
FR2370854A1 true FR2370854A1 (en) 1978-06-09
FR2370854B1 FR2370854B1 (en) 1982-10-29

Family

ID=9179755

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7633905A Granted FR2370854A1 (en) 1976-11-10 1976-11-10 Air motor for pneumatic drill - has intermediate chamber under air pressure to seal cooling water inlet chambers

Country Status (1)

Country Link
FR (1) FR2370854A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0346597A1 (en) * 1988-06-14 1989-12-20 TECHMO Car S.p.A. Hammer actuated by means of a hydraulic system, in particular suitable for use in dusty, corrosive, and similarly hostile environments

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1300677A (en) * 1961-09-19 1962-08-03 Boehler & Co Ag Geb Device for channeling a cleaning fluid through a driller
FR1532051A (en) * 1967-07-21 1968-07-05 Sonomotive Engineers Ltd Improvements to percussion tools
US3656508A (en) * 1970-06-15 1972-04-18 Ingersoll Rand Canada Water valve for rock drills

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1300677A (en) * 1961-09-19 1962-08-03 Boehler & Co Ag Geb Device for channeling a cleaning fluid through a driller
FR1532051A (en) * 1967-07-21 1968-07-05 Sonomotive Engineers Ltd Improvements to percussion tools
US3656508A (en) * 1970-06-15 1972-04-18 Ingersoll Rand Canada Water valve for rock drills

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0346597A1 (en) * 1988-06-14 1989-12-20 TECHMO Car S.p.A. Hammer actuated by means of a hydraulic system, in particular suitable for use in dusty, corrosive, and similarly hostile environments

Also Published As

Publication number Publication date
FR2370854B1 (en) 1982-10-29

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Legal Events

Date Code Title Description
ST Notification of lapse