DE8801012U1 - - Google Patents

Info

Publication number
DE8801012U1
DE8801012U1 DE8801012U DE8801012U DE8801012U1 DE 8801012 U1 DE8801012 U1 DE 8801012U1 DE 8801012 U DE8801012 U DE 8801012U DE 8801012 U DE8801012 U DE 8801012U DE 8801012 U1 DE8801012 U1 DE 8801012U1
Authority
DE
Germany
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
DE8801012U
Other languages
German (de)
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
Priority to DE8801012U priority Critical patent/DE8801012U1/de
Publication of DE8801012U1 publication Critical patent/DE8801012U1/de
Priority to EP88118941A priority patent/EP0325715A3/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • E21B4/145—Fluid operated hammers of the self propelled-type, e.g. with a reverse mode to retract the device from the hole
DE8801012U 1988-01-28 1988-01-28 Expired DE8801012U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8801012U DE8801012U1 (en) 1988-01-28 1988-01-28
EP88118941A EP0325715A3 (en) 1988-01-28 1988-11-14 Boring ram

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE8801012U DE8801012U1 (en) 1988-01-28 1988-01-28

Publications (1)

Publication Number Publication Date
DE8801012U1 true DE8801012U1 (en) 1988-03-10

Family

ID=6820047

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8801012U Expired DE8801012U1 (en) 1988-01-28 1988-01-28

Country Status (2)

Country Link
EP (1) EP0325715A3 (en)
DE (1) DE8801012U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5337837A (en) * 1993-06-17 1994-08-16 Earth Tool Corporation Dual-diameter pneumatic ground piercing tool
AU2002235745A1 (en) * 2000-12-02 2002-06-11 Tracto-Technik Gmbh Pneumatic rock-boring device and method for horizontal drilling using compressed air and drilling medium

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT337763B (en) * 1974-06-14 1977-07-25 Inst Gornogo Dela Sibirskogo O PNEUMATIC IMPACT DEVICE
DE2750603A1 (en) * 1977-11-14 1979-05-17 Inst Gornogo Dela Sibirskogo O STRIKING
GB8611289D0 (en) * 1986-05-09 1986-06-18 Fuller J D Percussive pneumatic apparatus

Also Published As

Publication number Publication date
EP0325715A3 (en) 1990-05-09
EP0325715A2 (en) 1989-08-02

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