GB950730A - Improvements in or relating to drill hammers - Google Patents

Improvements in or relating to drill hammers

Info

Publication number
GB950730A
GB950730A GB13475/60A GB1347560A GB950730A GB 950730 A GB950730 A GB 950730A GB 13475/60 A GB13475/60 A GB 13475/60A GB 1347560 A GB1347560 A GB 1347560A GB 950730 A GB950730 A GB 950730A
Authority
GB
United Kingdom
Prior art keywords
sleeve
bore
movable tube
flottmann
april
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
GB13475/60A
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
Publication of GB950730A publication Critical patent/GB950730A/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)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

950,730. Percussive tools. F. H. FLOTTMANN, [trading as INGENIEURBURO DIPL. - ING. F. H. FLOTTMANN]. April 14, 1960 [April 14, 1959], No. 13475/60. Addition to 876,766. Heading B4C. A drill hammer, having a central pipe for the supply of flushing water ending in a movable tube as described and claimed in the parent Specification, has, fitted to the end of the movable tube which extends into the bore in the steel shank, a seating sleeve which forms a seal between the tube and the bore. As shown, the movable tube 8 has a groove 11 into which is inserted a head 13 formed on a sleeve 12 which may have an outwardly bulged portion 14. The sleeve may end in a flared portion 15 or in a cylindrical portion, Fig. 5 (not shown). The steel shank is provided with an enlarged bore portion to allow entry of the sleeve.
GB13475/60A 1959-04-14 1960-04-14 Improvements in or relating to drill hammers Expired GB950730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI16289A DE1102071B (en) 1959-04-14 1959-04-14 Rotary hammer with central water flush

Publications (1)

Publication Number Publication Date
GB950730A true GB950730A (en) 1964-02-26

Family

ID=7185914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13475/60A Expired GB950730A (en) 1959-04-14 1960-04-14 Improvements in or relating to drill hammers

Country Status (3)

Country Link
CH (1) CH374611A (en)
DE (1) DE1102071B (en)
GB (1) GB950730A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059279A (en) * 1975-07-04 1977-11-22 Roger Montabert Hollow percussion drill rod with seal for cleaning fluid inlet tube

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1232090B (en) * 1961-02-27 1967-01-12 Ingersoll Rand Co Hammer drill
FR2482693A1 (en) * 1980-05-14 1981-11-20 Montabert Ets Composite seal for hydrostatic coupling to percussion drill - involving viscoelastic and rubber components opt. of polyacetal and polyurethane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059279A (en) * 1975-07-04 1977-11-22 Roger Montabert Hollow percussion drill rod with seal for cleaning fluid inlet tube

Also Published As

Publication number Publication date
DE1102071B (en) 1961-03-16
CH374611A (en) 1964-01-31

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