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| Number | Title | Issue Date |
| 7367412 | Collapsible rock head A rock head for use with an auger borer to bore a passageway through a body of soil and rock and simultaneously laying a pipe in that bored passageway. The rock head has a base connectable to the leading end of the auger. A plurality of movable mounts are provided o... | 05/06/2008 |
| 7357200 | Earth auger An earth auger presents a shank having a spiral earth removing structure therearound. The structure first presents a series of spirally positioned housings with cutting teeth therein followed by a spiral cutting edge about the shank. The teeth are radially, vertical... | 04/15/2008 |
| 7066286 | Gage surface scraper A gage scraper cleans mud from the gage surface of a rotary cone of a drill bit. The bit has a body having at least one leg depending therefrom, a bearing pin secured to each leg, and a rotary cutting cone mounted to the bearing pin. The cone has a conical gage surf... | 06/27/2006 |
| 7051821 | Adjustable hole cleaning device An adjustable hole cleaning device is provided for cleaning a hole in a subterranean formation. A drillstring containing the device is rotated to drill a hole through the subterranean formation. While rotating the drillstring, drilling fluid is circulated through th... | 05/30/2006 |
| 7044242 | Roller cone bits with reduced packing A roller-cone drill bit in which a large groove is machined into the backface of each cone, near the crack where the cone meets the arm assembly. By making the outer lip of this crack more exposed to the open volume of turbulent flow, turbulence near the crack is in... | 05/16/2006 |
| 7032691 | Underbalanced well drilling and production Underbalanced production and drilling may be achieved by a system which uses a rotating head coupled to surface blowout preventer stack for fluid flow control. A casing connects these surface components to a subsea shutoff assembly with a pair of ram shear devices t... | 04/25/2006 |
| 6732793 | Downhole jetting tool There is provided a jetting tool assembly for use in cleaning tubular components used in drilling for gaseous or liquid hydrocarbons in producing formations, said assembly being connectable to a hollow drillstring and having a first mode of operation which allows th... | 05/11/2004 |
| 5794727 | Earth remediation auger An earth remediation auger (22) is adapted for boring into tight ground (28) at a contaminated site. The earth remediation auger (22) includes a soil mixer (36) with mixing holes (40), scraping blades (34), and fin cutters (32). The fin cutters (32) score... | 08/18/1998 |
| 5655610 | Auger cleaner An apparatus is provided for cleaning dirt and debris from the stem and flighting of an earth boring auger. The auger cleaner apparatus has an opposed pair of blade assemblies which are brought into mechanical engagement with the stem and flighting of the... | 08/12/1997 |
| 5242027 | Cleaning device for earth augers Apparatus (30) is disclosed for preventing accumulation of debris such as clay, dirt or stones in the flighting (28) of an elongated earth auger (12) so that when the auger is removed from a bore hole while continuing to rotate, accumulated debris is not ... | 09/07/1993 |
| 4974682 | Hammer driven soil coring device A hammer driven soil coring device for use on golf course greens having a cylindrical cutting tube that has a lower cutting edge and longitudinally extending guide slots which serve as a guide for an ejector plate. Affixed to the cylindrical cutting tube ... | 12/04/1990 |
| 4884638 | Soil coring device with a core ejector mechanism A soil coring device with a core ejector mechanism that has a cylindrical cutting tube with two (2) 180 degree opposed tee slots that serve as a guide for an ejection plate, affixed to a cylindrical cutting tube is a tube with a vertically oriented slot a... | 12/05/1989 |
| 4836294 | Machine for digging a putting cup hole A putting cup hole digging machine is disclosed which comprises a main frame which has a fore and aft extent; a first mounting means for securing the main frame on a vehicle to permit the main frame to be vertically raised and lowered relative to the vehi... | 06/06/1989 |
| 4763735 | Mobile machine for making holes in putting greens A mobile machine for making holes in putting greens including a frame connected to a vehicle such as a mower, a cutter assembly mounted on a carriage slidably mounted on the frame for moving the cutter assembly in a vertical plane relative to the ground. ... | 08/16/1988 |
| 4515228 | Air groove scraper An earth boring rock bit having a sealed bearing with air or gas as the circulating medium. An annular groove is formed in the vicinity of the seal and connected to the interior of the bit for cooling the seal and cleaning debris from the area of the seal... | 05/07/1985 |
| 4341273 | Rotary bit with jet nozzles A jet rotary drill bit confirming a first strainer element allowing the passage of mud carrying small-sized particles, but preventing relatively coarse particles from passing to the jet nozzles. The first strainer element is self-cleaning and the relative... | 07/27/1982 |
| 4223749 | Rotary earth boring drill bit with centrifugal foreign particle barrier device A drilling bit for drilling earthen material such as an oil well rotary cone drilling bit, which includes means for preventing foreign particles such as sand, rock cuttings, etc., from reaching the rotational bearings of the bit cones. This end result is ... | 09/23/1980 |
| 4195700 | Large diameter bit with sweep pickup An improved sweep pickup for large diameter bits is disclosed in which the flow rate of drilling fluid through the pickup tube is constant, thereby enhancing its lifting capacity. The sweep pickup comprises an elongated tube extending radially across the ... | 04/01/1980 |
| 4169483 | Hydraulic jet drill stem and bit unplugging device A device for cleaning compacted clay, fine gravels, sand, and other blocking agents from the inside of drill stems or drill bits. The device cleans away the unwanted matter by use of concentrated streams of high pressure liquid traveling at very high velo... | 10/02/1979 |
| 4156470 | Rotary earth boring drill bit with centrifugal foreign particle barrier device A drilling bit for drilling earthen material such as an oil well rotary cone drilling bit, which includes means for preventing foreign particles such as sand, rock cuttings, etc., from reaching the rotational bearings of the bit cones. This end result is ... | 05/29/1979 |
| 4117896 | Soil sampler In abstract, a preferred embodiment of this invention is a soil sampler having a specially designed tip for easy penetration, a movable slot cleaner for cutting away surface soil that clings as the sample is taken, and depth markings for allowing accurate... | 10/03/1978 |
| 4106576 | Sampling tube cleaning device A sampling tube cleaning device adapted for removable mounting on a soil sample core extraction tool, the tube cleaning device including a handle portion and a cleaning head connected to the handle portion, the cleaning head further comprising a first cle... | 08/15/1978 |
| 4105083 | Large diameter drill bit A drill bit is disclosed for drilling large diameter shafts. The drill bit comprises a main bit body having a plurality of rolling cutters rotatively mounted thereon. The cutters function to contact and disintegrate the earth formations at the bottom of t... | 08/08/1978 |
| 4098360 | Soil sample core extraction tool A soil sample core extraction tool having a handle member on which is movably mounted a soil probe member and a clutch arranged for selectively preventing movement of the soil probe with respect to the handle member. By sequential actuation and release of... | 07/04/1978 |
| 4022286 | Auger An auger for use in a continuous mining operation having an elongate tubular member in communication with a fluid pressure source and a scroll mounted on the tubular member with spray mechanisms for spraying fluid into the air adjacent the peripheral edge... | 05/10/1977 |
| 3989115 | Adjustable gage cutter scraper for tunneling machines An adjustable gage cutter scraper system is provided to clear a path through fallen rock and muck in a tunnel invert. The scraper system protects the gage cutters from recutting or regrinding the rock and muck and thus prevents or retards excessive wear o... | 11/02/1976 |
