Percussion drill head

Details Percussion drill head Percussion drill head

2006-08-22

2006-08-22

Bates, Zakiya W. (Department: 3676)

Boring or penetrating the earth

Processes

Boring horizontal bores

C175S299000, C175S305000, C175S414000

Reexamination Certificate

active

07093677

ABSTRACT:
The invention relates to a method for horizontal drilling with a percussion implement and a percussion head or percussion head element mounted in a movable manner relative to the percussion implement, the percussion impulse being transmitted in at least three steps.

REFERENCES:
patent: 3865200 (1975-02-01), Schmidt
patent: 4133395 (1979-01-01), Schmidt
patent: 4221157 (1980-09-01), Schmidt
patent: 4938297 (1990-07-01), Schmidt
patent: 2 157 259 (1972-11-01), None
patent: 25 58 842 (1977-07-01), None
patent: 26 34 066 (1984-09-01), None
patent: 35 33 995 (1988-01-01), None
patent: 198 04 919 (1999-08-01), None
patent: 0 964 133 (1999-12-01), None
International Search Report re PCT application No. PCT/EP02/02870 dated Jun. 10, 2002.
International Examination Report re PCT application No. PCT/EP02/02870 dated Jun. 20, 2003.

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