Bizarre Patents
A method for inducing cats to exercise consists of directing a beam of invisible light produced by a hand-held laser apparatus onto the floor or wall.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7658244 | Device for advancing drillings in the ground A device for driving boreholes in the ground, having a rotationally driven main shaft with a shaft journal whose axis (B) forms an acute angle with respect to the axis (A) of the main shaft. A drill head is mounted such that it can rotate about the axis (B) of the s... | 02/09/2010 |
| 7562726 | Device for drilling a bore in the ground The invention relates to a device for drilling a bore in the ground, comprising a drive system with a connecting rod assembly that extends from the drive system into the ground. The end of said assembly pointing towards the face or base of the bore is connected to a... | 07/21/2009 |
| 7258179 | Rotary bit with an indenting member In one aspect of the invention a drill bit assembly has a body portion intermediate a shank portion and a working portion. The working portion has a recess with a side wall which is substantially coaxial with the shank portion. At least one cutting element is attach... | 08/21/2007 |
| 7240745 | Drill bit lubrication apparatus and method A lubricating nutating single cone drill bit 10 is disclosed. Bit 10 includes a bit shank 12 with an axially skewed bore 18 rotatably retaining a cutter body 22. A plurality of cutter elements (46, 48) are affixed to the cut... | 07/10/2007 |
| 7182407 | Rock boring device with an oscillating and nutating rotary disc cutter A rock boring device (10) including a rotary disc cutter (11). The disc cutter (11) is driven in an oscillating manner and also driven or free to nutate, and the device includes a mounting section (22) for the rotary disc cutter and a dri... | 02/27/2007 |
| 7152701 | Cutting element structure for roller cone bit A roller cone drill bit includes a bit body adapted to be coupled to a drill string, a bearing journal depending from the bit body, and a single roller cone rotatably attached to the bearing journal. The single roller cone has a plurality of cutting elements, where ... | 12/26/2006 |
| 6892828 | Nutating single cone drill bit A nutating single cone drill bit includes a bit shank defining a bit axis, a journal defining a rotation axis skewed from the bit axis, and a cutter elements mounted upon a cutter body wherein the tip of each cutter elements is forward a plane defined normal to the ... | 05/17/2005 |
| 6439326 | Centered-leg roller cone drill bit A drill bit including a roller cone and fixed cutters positioned external to the roller cone and radially from the bit axis of rotation. The roller cone is located so that a drill diameter of the cone is substantially concentric with an axis of rotation o... | 08/27/2002 |
| 5685381 | Drill rod and drill bit with rocking connection A drill bit is fictionally received over a drill rod via complementary generally frusto-conical male formation and socket. The socket has an inwardly protruding face at an angle with the longitudinal axis of the drill rod. The male formation on the drill ... | 11/11/1997 |
| 5671816 | Swivel/tilting bit crown for earth-boring drills A drill bit for drilling subterranean formations includes a device to provide a "universal" effect between the shank and crown for self alignment of the crown with the bore hole in the formation. The bit is suitable for downhole assemblies configured for ... | 09/30/1997 |
| 5503236 | Swivel/tilting bit crown for earth-boring drills A drill bit for drilling subterranean formations includes a device to provide a "universal" effect between the shank and crown for self alignment of the crown with the bore hole in the formation. The bit is suitable for downhole assemblies configured for ... | 04/02/1996 |
| 5190353 | Rock cutting tool having eccentric drive A rock-cutting tool includes a sleeve equipped with cutting elements and supported on a shaft, the sleeve being separately rotatable and eccentrically arranged in relation to the shaft whereby, in use, rotation of the shaft imparts a radially oscillating ... | 03/02/1993 |
| 4936398 | Rotary drilling device A drill bit for earth boring purposes includes a drill bit body which is rotatable about a drilling axis, a single cutting member mounted rotatably on the body and a counter-reaction member also mounted on the body. The counter-reaction member extends par... | 06/26/1990 |
| 4796713 | Activated earth drill The invention relates to a drill bit which includes a drive arrangement having two opposed drive shafts which are transverse to the drill rod axis, mechanism for driving the shafts and a rock comminuting cutter which is eccentrically mounted on each of th... | 01/10/1989 |
| 4736987 | Rock cutting assembly A rock cutting assembly which includes a rock cutting roller with the roller being composed of a central hub portion and an annular cutting element which is rotatably mounted on the hub and carries rock cutting formations, means for driving the hub portio... | 04/12/1988 |
| 4580642 | Zero deviation drill bits Method and apparatus for drilling a straight borehole in all types of geological formations by the provision of a drilling tool that maintains a constant hole angle respective to the vertical as the borehole is formed. The apparatus includes a bit to whic... | 04/08/1986 |
| 4463220 | Drill bit for forming a fluid cushion between the side of the drill bit and the side wall of a bore hole In a drill bit comprising a body having a channel therethrough for carrying drilling fluid for injection into a bore hole through a nozzle at one end thereof and a cutting head mounted in the body and contacting the bottom of the bore hole. The improvemen... | 07/31/1984 |
| 4372403 | Eccentric rotary bit A rotary drill bit has an upper rotatable main body member which rotates respective to a lower stationary bit member. The lower stationary bit member has an axial centerline arranged at an angle respective to the axial centerline of the upper body member.... | 02/08/1983 |
| 4203496 | Longitudinal axis roller drill bit with gage inserts protection A Zublin type rotary drill bit is disclosed having a main body rotating about a main axis. The bit body includes a journl pin extending downwardly therefrom, with the journal pin forming a second axis disposed at an angle with respect to the main axis. Th... | 05/20/1980 |
| 4168755 | Nutating drill bit A nutating earth drilling bit which is adapted for use in drilling systems in which the drilling fluid and cuttings are transported from bit to surface through the interior of the drill string. The nutating bit is provided with a toroidal cutting member a... | 09/25/1979 |
| 4096917 | Earth drilling knobby bit A partially solid head bit having a flow passage therethrough located at approximately the center of the bit is shown. The bit is designed for use in conjunction with a hammer action drilling apparatus. The flow passage extends through a shank of the bit ... | 06/27/1978 |
