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Class Information
Number: 175/213
Name: Boring or penetrating the earth > With above-ground means for handling drilling fluid or cutting > With suction pump inlet communicating with bore bottom
Description: Apparatus including a pumping means, the low pressure side or intake of which is in direct communication with the bottom of the borehole.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8439450 Tunneling apparatus including vacuum and method of use May. 14, 2013
8381841 Debris evacuator for cleaning a masonry bore Feb. 26, 2013
8025111 Agitator for a drill and related methods Sep. 27, 2011
7806205 Earth drilling device Oct. 5, 2010
7726417 Water collecting device for core drilling device Jun. 1, 2010
7575069 Mobile soil sampling device with vacuum collector Aug. 18, 2009
7563060 Vacuum drilling system Jul. 21, 2009
7455486 Dust extracting device Nov. 25, 2008
7451824 Downhole draw down pump and method Nov. 18, 2008
7419341 Machining mechanical parts with a hollow cylindrical tool Sep. 2, 2008
7281886 Suction device Oct. 16, 2007
7222675 Downhole draw down pump and method May. 29, 2007
7185720 Hole digger Mar. 6, 2007
7163070 Drill head Jan. 16, 2007
7073612 Surge device for air drilling Jul. 11, 2006
7073597 Downhole draw down pump and method Jul. 11, 2006
7025154 Method and system for circulating fluid in a well system Apr. 11, 2006
6904982 Subsea mud pump and control system Jun. 14, 2005
6892829 Two string drilling system May. 17, 2005
6854534 Two string drilling system using coil tubing Feb. 15, 2005
6792735 Advanced processes for coring and grouting masonry Sep. 21, 2004
6719072 Suction drill unit for dowel anchorage in rock Apr. 13, 2004
6666286 Fluid circulating apparatus for drill Dec. 23, 2003
6533047 Suction tool Mar. 18, 2003
6505691 Subsea mud pump and control system Jan. 14, 2003
6457529 Apparatus and method for returning drilling fluid from a subsea wellbore Oct. 1, 2002
6405812 Drilling tool for the air-lifting process Jun. 18, 2002
6325159 Offshore drilling system Dec. 4, 2001
6216800 In-situ drilling system with dust collection and overload control Apr. 17, 2001
6202765 Device having a filter, a filter vibrating means and a scraper used for sucking off drillings Mar. 20, 2001
5860232 Mobile safe excavation system having a deflector plate and vacuum source Jan. 19, 1999
5535836 Total recovery drill Jul. 16, 1996
5526887 Device for drilling holes in the crust of the earth, especially for drilling oil wells Jun. 18, 1996
5497841 Methods for coring a masonry wall Mar. 12, 1996
5259458 Subsea shelter and system for installation Nov. 9, 1993
5234294 Drilling device for producing drilled holes with undercuts Aug. 10, 1993
5199515 Dry pneumatic system for hard rock shaft drilling Apr. 6, 1993
5174394 Apparatus for cleaning layers of earth Dec. 29, 1992
5125464 Drilling device for the study and exploitation of the subsoil Jun. 30, 1992
5016717 Vacuum excavator May. 21, 1991
4964476 Drilling device for producing drill holes with an undercut Oct. 23, 1990
4964475 Drilling device for producing drill holes with undercut Oct. 23, 1990
4911253 Core and water collector Mar. 27, 1990
4889196 Diverter apparatus Dec. 26, 1989
4711609 Drill tool Dec. 8, 1987
4711299 Apparatus and methods for pumping solids and undesirable liquids from a well bore Dec. 8, 1987
4667750 Vibratory earth penetrator with synchronized air lance control May. 26, 1987
4630691 Annulus bypass peripheral nozzle jet pump pressure differential drilling tool and method for well drilling Dec. 23, 1986
4621693 Apparatus and methods for pumping solids and undesirable liquids from a well bore Nov. 11, 1986
4558752 Device for obtaining dust from minerals Dec. 17, 1985

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