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7537067 |
A rotary claw bit for drilling. The rotary claw bit includes a base plate having multiple lobes, the lobes having upper surfaces located in the same plane and lower surfaces located in the same plane. A plurality of bullet tooth attachme...
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7392866 |
The invention is embodied in a heavy duty drill bit for hard/soft rock drilling comprising a high fatigue-resistant, high alloy steel bit body having a PCD cutter member and an enlarged shank portion constructed to accommodate torsional ...
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6454029 |
The invention concerns a rotary boring bit, typically for coal drilling applications. The bit (10) of the invention is in the form of a hardmetal blade and includes a cutting edge (18) having an outwardly projecting gable shaped cutting ...
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6227317 |
A garden auger having an auger blade with a substantially rectangular body section for use with a drill motor. The preferred auger body including toed-in wings for rapidly clearing earth from the created hole and cutters formed at one en...
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5647448 |
A drill bit for placement on a trenchless drill, the drill bit having a substantially rectangular construction, opposed side edges, a front end edge angularly related to the side edges, and a back end edge opposite the front end edge, op...
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5303787 |
A non-coring rotary mining tool having a bit body constructed and arranged for rock boring as in roof bolting operations, and including PCD cutter inserts of preselected size mounted at a negative angle and having substantially continuou...
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5180022 |
A rotary mining tool having a steel body adapted to be driven axially and turned in a rotational arc relative to its axis and being provided with a hardened wear surface with a cutting edge adapted for cutting engagement with a work area...
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5103922 |
A fishtail type drag bit is disclosed consisting of multiple blades, each blade forming radially disposed grooves. Each groove contains equidistantly spaced diamond cutters along its length. The cutters are additionally oriented at a neg...
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4986373 |
A post hole digger and a method of implanting a post in the ground. A boring implement having a piercing free end and also having an attachment flange is secured to an end portion of a post to be implanted in the ground. The implement ha...
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4813500 |
A fishtail type drag bit having abradable cutter blades attached to a body of the bit is disclosed. A multiplicity of axially aligned tubes are welded together to form a blade each blade being sustantially parallel with an axis of the bi...
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4776241 |
A cutting tool comprising a shank having a substantially diametrical cut through one end of the shank and having the diametrically opposed limbs formed by such a cut bent radially outwardly from the axis of the shank. Cutting blades are ...
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4712952 |
The invention relates to a drill for generating of holes in a work piece, preferably in a composite material. The drill comprises a cylindrical shank portion, two cutting portions projecting in the axial and radial direction of the drill...
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4320925 |
A rock cutting tooth assembly for a dredge cutterhead in which each tooth has a cutting edge formed by the intersection of a cutting face substantially lengthwise with the tooth and a flank substantially transverse to the tooth, the cutt...
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4252202 |
A drill bit consisting of a tubular, main body member having a set of threads at one end thereof connectable to a drill stem and an annular mounting edge on an opposite end thereof, the mounting edge having a plurality of circumferential...
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4074780 |
An earth auger having an integral or one piece cutting blade and pilot element so arranged that the pilot element is spaced downwardly from the shaft of the auger; the cutting blade also having a curved edge swept back from the axis of t...
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3960218 |
A grass-clearing device for lawn sprinkler heads, wherein the grass and sod surrounding the in-line, sprinkler head is to be trimmed therefrom, to provide an unobstructed flow of water from the sprinkler head. The device comprises a pair...
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3774556 |
Toxic liquids are introduced into soil for exterminating subterranean termites therein by drilling a hole through the soil with a rotating drill bit at the end of a pipe and introducing the liquid into the soil at the bit as the hole is ...
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3726351 |
A mill tool includes a tubular body member having a crown portion molded on one end thereof and having a plurality of circumferentially spaced and radially extending ribs extending outwardly from one face of the crown portion and having ...
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3641775 |
Formation of sand drains in the earth by drilling and forcing a fluid at high velocity to wash out a hole and thereafter filling the hole by forcing filler material down through a pipe; the pipe being outfitted with special valve control...
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3557887 |
Following is disclosed a drill bit especially adapted for use as a pilot bit in drilling foundation holes and which has a substantially conical body. Two blade portions, spaced 180° apart, extend from the body in spiral fashion from a c...
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RE18434 |
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RE11597 |
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RE08016 |
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1326507 |
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1318207 |
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1316435 |
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1312732 |
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1306807 |
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1290412 |
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1280696 |
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1278402 |
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1273724 |
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1271275 |
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1268474 |
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1259319 |
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1257353 |
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1251323 |
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1226393 |
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1226377 |
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1211634 |
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1211331 |
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1206488 |
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1203784 |
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1199432 |
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1198690 |
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1193247 |
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1191698 |
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1189560 |
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1185803 |
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1179299 |
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