Title:
SONIC DRILL HEAD
Document Type and Number:
WIPO Patent Application WO2002068789
Kind Code:
A3
Abstract:
A sonic drilling head (10) includes a spindle (30) which is both rotated and vibrated at sonic frequency to effect ground penetration of members such as drill rods, etc. Two pairs of rotating eccentric masses (70, 72, 74, 76) are mounted in a housing (84). The pairs of masses have intersecting axis. A spiral bevel gear (94) and drive shaft (120) rotate the first pair of masses which engage the second pair of masses so that the pairs of masses are driven in opposite directions. Rotation is imparted to the spindle through a geared bearing (48) isolated by a pack of precision disc springs (62), which also cooperate with a second set of precision disc springs (50) to isolate the vibrations of the rotating eccentric masses from an outer housing (12) of the sonic drill head.
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Inventors:
SMITH BRIAN (US)
LANGE JAMES E (US)
LANGE JAMES E (US)
Application Number:
PCT/US2002/006014
Publication Date:
December 19, 2002
Filing Date:
February 26, 2002
Export Citation:
Assignee:
DIEDRICH DRILL INC (US)
SMITH BRIAN (US)
LANGE JAMES E (US)
SMITH BRIAN (US)
LANGE JAMES E (US)
International Classes:
E21B7/24; (IPC1-7): E21B7/24; F16F1/32
Foreign References:
| US4662459A | 1987-05-05 | |||
| US5549170A | 1996-08-27 | |||
| US3786874A | 1974-01-22 | |||
| US5417290A | 1995-05-23 | |||
| US3217551A | 1965-11-16 | |||
| US1763146A | 1930-06-10 | |||
| EP0240810A2 | 1987-10-14 | |||
| US5409070A | 1995-04-25 | |||
| US5540295A | 1996-07-30 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 06 30 April 1998 (1998-04-30)
"ResonantSonic Drilling - Innovative Technology Summary Reports", U.S. DEPARTMENT OF ENERGY - OFFICE OF ENVIRONMENTAL MANAGEMENT - OFFICE OF TECHNOLOGY DEVELOPMENT, - April 1995 (1995-04-01), XP002204563, Retrieved from the Internet [retrieved on 20020704]
"ResonantSonic Drilling - Innovative Technology Summary Reports", U.S. DEPARTMENT OF ENERGY - OFFICE OF ENVIRONMENTAL MANAGEMENT - OFFICE OF TECHNOLOGY DEVELOPMENT, - April 1995 (1995-04-01), XP002204563, Retrieved from the Internet
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