Title:
Tool for making holes in the ground
Document Type and Number:
WIPO Patent Application WO1992010637
Kind Code:
A3
Abstract:
A tool for making holes in the ground comprises a ram tip and coupling means for connecting to a drive device, for instance a hydraulically or pneumatically operating tool driving machine or a vibrator operating for instance with eccentrically placed rotatably drivable masses for successively exciting the ram tip in the direction of the free end with vibration or percussion.
Inventors:
KELLNER WILLIBALD (AT)
VAN DALFSEN RUDOLF HENDRIK (NL)
VAN DALFSEN RUDOLF HENDRIK (NL)
Application Number:
PCT/EP1991/002394
Publication Date:
December 10, 1992
Filing Date:
December 12, 1991
Export Citation:
Assignee:
DALFSEN ROTAR EQUIPMENT B V VA (NL)
KELLNER WILLIBALD (AT)
VAN DALFSEN RUDOLF HENDRIK (NL)
KELLNER WILLIBALD (AT)
VAN DALFSEN RUDOLF HENDRIK (NL)
International Classes:
B25D17/08; E02D5/38; E02D5/46; E02D7/10; E02D7/18; E02D27/42; E02F3/96; E21B7/26; E21B11/02; E21B19/087; (IPC1-7): E21B7/02; A21B11/02; A21B7/26; B25D17/08; B25D17/28; E02D5/46; E02D27/42
Foreign References:
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FR2314309A1 | 1977-01-07 | |||
GB2064625A | 1981-06-17 | |||
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Other References:
Patent Abstracts of Japan, vol. 9, no. 80 (M-370)(1803), 10 April 1985, & JP,A,59210124 (MITSUTOU KOGYO K.K.) 28 November 1984
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