Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7165920 | System for attaching accessories to a rotary hand tool A system for attaching an accessory attachment to a rotary hand tool of the type having a body with a generally cylindrical nose end portion through which an output shaft passes. The preferred embodiment of the system has an attachment that has an attaching end whic... | 01/23/2007 |
| 7125209 | Quick-change mechanism for use with the stationary spindle of a Davenport® automatic screw machine The present invention provides an improvement (20) in a Davenport® automatic screw machine having a stationary spindle. The improvement broadly includes a quick-change mechanism (26) associated with the stationary spindle (22). The mechanism in... | 10/24/2006 |
| 7096982 | Drill shoe A method and apparatus for a drilling with casing includes therewith a drill shoe configured for later drilling through thereof in situ, with cutters retainable thereon in response to the forces encountered during borehole drilling, yet moveable from the envelope th... | 08/29/2006 |
| 7004692 | Rotary cutting tool A rotary cutting tool has a cutting head, a screw member and a tool shank. The cutting head has an axially directed through bore with locking wings protruding from the bore surface. Each locking wing having a sloping locking surface and stopper with a stop surface. ... | 02/28/2006 |
| 6702046 | Drill device for a drilling apparatus The drill device has a body with a front end and a rear end and which is connectable to the shaft of a drilling apparatus. A plurality of angularly spaced apart slots are formed in the exterior of the device which extend between the front and rear ends. E... | 03/09/2004 |
| 6450269 | Method and bit for directional horizontal boring A bit for directional boring according to the invention includes a bit body having a frontwardly facing sloped face effective for steering the bit in dirt. The sloped face defines a steering plane that defines an acute included angle relative to a lengthw... | 09/17/2002 |
| 6131675 | Combination mill and drill bit A combination milling and drilling bit which can be converted from a first type of cutting operation to a second type of cutting operation by hydraulically moving a plurality of movable blades to extend beyond a plurality of fixed blades. The fixed blades... | 10/17/2000 |
| 6102142 | Drilling tool with shock absorbers A drilling tool including a drilling head equipped with cutting edges and fitted with several shock-absorption elements, of which at least one part is made of an elastomer material. Each shock-absorption element having a block incorporating one portion in... | 08/15/2000 |
| 5788430 | Drilling tool for rotary percussion drilling A drilling tool for rotary percussion drilling including: a drilling body defining: a longitudinal centerline axis extending in a drilling direction; a bore extending in a direction of the centerline axis and having a bore bottom; and a recess extending i... | 08/04/1998 |
| 5286144 | Apparatus and method for cutting a hole in a pipe liner An apparatus and method for cutting a hole in a liner installed in a conduit. Included in the apparatus is a carriage and a cutting head that are rotated to cut the liner. A lateral axis extends through the carriage. A skid constrains the carriage and the... | 02/15/1994 |
| 5070951 | Drill for water wells A rotary well drilling unit, particularly for water wells, comprises a tubular rotatable drill string string through which water is pumped. Attached to the lower end of the drill string is a drill head having side-by-side cutter blades. The cutter blades ... | 12/10/1991 |
| 5059068 | Rotary slot cutting tools and insert clamping method A rotary slot cutting tool having a flat sided disc shaped body with a central bore, a plurality of apertures spaced about the periphery of the body each aperture having in it a cutting insert held in position by the shape of the aperture against radial m... | 10/22/1991 |
| 5010967 | Milling apparatus with replaceable blades An apparatus for milling away tubular conduits encased within well bores is disclosed. The milling device consists of a cylindrical body. The body forms longitudinal slots therein for radially disposed replaceable cutter blades that are inserted through t... | 04/30/1991 |
| 4610318 | Rotary cutter assembly A rotary cutter assembly comprises a drill head having a plurality of receptacles which releasably receive rolling cutter bit assemblies. The bit assemblies are locked in position by a locking sleeve connecting transverse fluid passageways of the drill he... | 09/09/1986 |
| 4452325 | Composite structure for cutting tools A cutting tool comprises a compact bundle of elongated, substantially cylindrical fibers or rods formed from a cemented metal carbide material. The bundle of fibers is shrink-fitted within a metal collar to form a long-wearing cutting tool.... | 06/05/1984 |
| 4448270 | Variable diameter earth boring bit An earth boring bit is shown of the type used to cut a shaft in the earth. The earth boring bit has a central bit body which is adapted to be driven to cut a shaft and which has an outer conical surface thereon. An outer ring segment carried on the centra... | 05/15/1984 |
| 4335794 | Rotary cone cutter A multi-cone roller bit with a central pot member is disclosed, having releasably secured legs carrying rolling cutters mounted on the pot. The legs have an upper portion which can be releasably secured in a recessed central portion of the pot and an abut... | 06/22/1982 |
| 4252202 | Drill bit 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 circumferentially spaced, longitu... | 02/24/1981 |
| 4190126 | Rotary abrasive drilling bit A rotary abrasive drilling bit disclosed herein is of a construction wherein teeth are equipped on the fore part of a bit body attached to a rotary drill pipe, each of said teeth is composed of a plurality of chips which are made of cemented tungstencarbi... | 02/26/1980 |
| 3987859 | Unitized rotary rock bit A rotary rock bit is formed from at least two individual segments. The individual segments are positioned together and aligned in the proper position for the final assembled bit. The seams between the individual segments are in the form of square-butt typ... | 10/26/1976 |
| 3982596 | Drill bit A rotary percussion bit comprises a body having at its upper end a threaded pin adapted to mate with a length of dual conduit drill stem. A plurality of down flow passages for air or other drilling fluid are near the periphery of the body. Inwardly of the... | 09/28/1976 |
