GB360538A - Improvements in and relating to pneumatic percussive tools - Google Patents

Improvements in and relating to pneumatic percussive tools

Info

Publication number
GB360538A
GB360538A GB25774/30A GB2577430A GB360538A GB 360538 A GB360538 A GB 360538A GB 25774/30 A GB25774/30 A GB 25774/30A GB 2577430 A GB2577430 A GB 2577430A GB 360538 A GB360538 A GB 360538A
Authority
GB
United Kingdom
Prior art keywords
relating
aug
percussive tools
pneumatic percussive
piston
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
GB25774/30A
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.)
Mannesmann Demag AG
Original Assignee
Demag AG
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 Demag AG filed Critical Demag AG
Publication of GB360538A publication Critical patent/GB360538A/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
    • 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)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)

Abstract

360,538. Percussive drills. DEMAG AKT.-GES., Duisburg, Germany. Aug. 28, 1930, No. 25774. Convention date, Aug. 29, 1929. [Class 124.] To enable the pressure fluid to be used for clearing the borehole, the distributing valve 7 is held at one end of its stroke by a pin 15. Air then passes through the port 11 and the flutes 22, or through the passage 21 and the bore 3 of the piston. Air pressure being supplied to both sides of the piston causes it to close the exhaust port.
GB25774/30A 1929-08-29 1930-08-28 Improvements in and relating to pneumatic percussive tools Expired GB360538A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE360538X 1929-08-29

Publications (1)

Publication Number Publication Date
GB360538A true GB360538A (en) 1931-11-12

Family

ID=6294505

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25774/30A Expired GB360538A (en) 1929-08-29 1930-08-28 Improvements in and relating to pneumatic percussive tools

Country Status (1)

Country Link
GB (1) GB360538A (en)

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