Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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 |
| 8147142 | Bearing assembly, and bearing apparatus and motor assembly using same Embodiments of present invention relate to a bearing assembly, and a bearing apparatus and motor assembly that employs such a bearing assembly. In one embodiment of the present invention, a bearing assembly comprises a support ring including a plurality of recesses ... | 04/03/2012 |
| 7901137 | Bearing assembly, and bearing apparatus and motor assembly using same Embodiments of present invention relate to a bearing assembly, and a bearing apparatus and motor assembly that employs such a bearing assembly. In one embodiment of the present invention, a bearing assembly comprises a support ring including a plurality of recesses ... | 03/08/2011 |
| 7347290 | Multi-part energizer for mechanical seal assembly An energizer for a mechanical seal assembly for use in a drill bit is disclosed. The energizer is a composite of at least two resilient materials, one having a durometer hardness that is greater than the other. The material contacting a journal provides relatively h... | 03/25/2008 |
| 7314100 | System for use in a bore hole for axially coupling a tubular end and a mandrel System for coupling two tubular ends for use in a well bore, the system comprising a first tubular end, a second tubular end for inserting into the first tubular end in axial alignment thereof, thereby forming an annular space between the first tubular end and the s... | 01/01/2008 |
| 7293617 | Polycrystaline diamond compact insert reaming tool A reaming tool including a body adapted to couple to a drill string at both axial ends thereof, the body including a plurality of reaming blades affixed at azimuthally spaced apart locations around the circumference of the body, wherein selected ones of the pluralit... | 11/13/2007 |
| 7237627 | Bearing and lubrication system for earth boring bit Methods and apparatus for maintaining lubrication of rolling cone cutters mounted on journal pins. Embodiments comprise a rotating cone disposed on a journal pin and forming a journal gap there between. A cylindrical journal sleeve is disposed in the journal gap. Th... | 07/03/2007 |
| 7217129 | Medical or dental-medical handpiece having at least one rotary part The invention relates to a medical or dental-medical handpiece having a rotary part, in particular a turbine rotor. In order to improve the handpiece with regard to small construction, running noise and economical construction, there is provided a roller bearing for... | 05/15/2007 |
| 7188691 | Metal seal with impact-absorbing ring Disclosed is a seal assembly for dynamically sealing between rotatable members, such as employed to seal the rolling cone of a rock bit. One preferred assembly includes an energizer, first and second seal rings, and a cushioning ring having an L-shaped cross-section... | 03/13/2007 |
| 7128171 | Hydrodynamic pump passages for rolling cone drill bit An earth boring bit has rotating cones with two lubricant passages to increase bearing capacity and cause lubricant circulation. A lubricant reservoir in the body supplies lubricant to passages between the cone and bearing pin. A pressure compensator equalizes lubri... | 10/31/2006 |
| 7117961 | Dynamic seal with soft interface A device and method for dynamically sealing between rotatable members such as a rolling cone of a rock bit. The assembly includes a seal ring having a facing surface of a relatively hard material, such as hardened steel or tungsten carbide, and a second seal ring of... | 10/10/2006 |
| 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 |
| 7017683 | Cutter for tunnel boring machine A cutter for a tunnel boring machine is equipped with a cutter body (1) with a slanting surface (2), a cylindrical contact surface (12) and a preferably tapered threaded portion with specially designed threads (6), a clamping ring (4 | 03/28/2006 |
| 6416224 | Rolling cutter drill bits A rolling cutter drill bit comprises a body and three legs, each leg having a cantilevered bearing spindle, a roll cutter rotatably mounted on the bearing spindle, a lubricating system within the spindle, and a tubular bearing element located radially bet... | 07/09/2002 |
| 6254275 | Sealed bearing drill bit with dual-seal configuration and fluid-cleaning capability A drill bit for use in an earthen annulus that contains loose particles is connected to a fluid supply source and includes a bit body having at least one journal segment and at least one fluid conduit in fluid communication with the fluid supply source. A... | 07/03/2001 |
| 6250407 | Rotary drill bit having filling opening for the installation of cylindrical bearings A rotary drill bit includes a rotary cutter rotatably mounted on a leg. A radial bearing arrangement and an axial bearing arrangement are provided in an interface between the cutter and the leg. The leg includes a filling opening for enabling cylindrical ... | 06/26/2001 |
| 5725313 | Rolling cutter drill bits A rolling cutter drill bit comprises a body and three legs, each leg having a cantilevered bearing spindle, a rolling cutter rotatably mounted on the bearing spindle, lubricant delivering means within the beating spindle, and a floating thrust bearing ele... | 03/10/1998 |
| 5642942 | Thrust plugs for rotary cone air bits A radially disposed thrust bearing assembly for air cooled and lubricated mining type rotary cone rock bits consists of a first non-rotating radially disposed steel thrust bearing disc and an apposed, non-rotating carbide thrust bearing disc. One of the t... | 07/01/1997 |
| 5307887 | Earth boring bit with improved thrust bearing An earth boring bit having a body and a cantilevered bearing shaft extending inwardly and downwardly from the body. A rotatable cutter with an open end is assembled over the shaft, which has a radial bearing surface formed around a longitudinal axis. The ... | 05/03/1994 |
| 5190379 | Bearings for roller cutter assembly A roller cutter assembly for a roller reamer which can be attached to a drill string is formed of a cylindrical body having an integral tapered bearing pin at each end. A journal bearing block for each bearing pin can be secured to the roller reamer by we... | 03/02/1993 |
| 5024539 | Friction bearing and cone retention thrust system for a rock bit A rotary rock cutter cone is rotatively supported while being axially located and retained on a cooperating cantilevered journal shaft depending from a rock bit body by plain friction bearing means. A primary stationary thrust face is provided by a radially ex... | 06/18/1991 |
| 4819517 | Selected bearing couple for a rock bit journal and method for making same A method of providing a selected bearing couple in a journal bearing of a rotary rock bit is described, wherein differential thermal expansion is used to mate a thin walled bushing of a chosen bearing alloy to one of the steel structural members. A pre-fi... | 04/11/1989 |
| 4793719 | Precision roller bearing rock bits A sealed bearing roller cone rock bit is disclosed having precision roller bearings with very close fits. The bearing package includes highly refined and hardened surface finishes, special roller bearing metal materials and lubricants with specific lube v... | 12/27/1988 |
| 4750573 | Drill bit having a flush-out port A roller cutter drill bit detachably secured to a drill string for delivering drilling fluid under pressure to the bit, comprising a plurality of bearing journals at its lower end and passaging extending down in the bit body to each of the journals for fl... | 06/14/1988 |
| 4646858 | Earth boring bit with air system access An earth boring bit of the "air cooled" type that includes an air passage access system, including a generally vertical passage with an opening on the exterior of the leg or in the shank cavity that forms part of the body of the bit. This vertical passage... | 03/03/1987 |
| 4593774 | Downhole bearing assembly A downhole bearing assembly includes concentric inner and outer tubes, with bearings mounted therebetween. A high pressure elastomeric cup seal assembly is mounted between the inner and outer tubes, and at least one metal-to-metal seal is mounted between ... | 06/10/1986 |
| 4555186 | Amorphous alloy plain bearings A plain bearing pair comprising a bearing surface in opposed mating engagement with a relatively moveable friction bearing surface wherein the material of at least one of the mating bearing surfaces is formed from an amorphous metal alloy having a predomi... | 11/26/1985 |
| 4437774 | Drilling bit bearings An improved drilling bit has a cone shaped cutter 22 rotatably mounted on a leg 16 by way of a central journal 18 and an annular journal 20. The annular journal is axially coextensive with the central journal. The cutter has outer collar 26 and inner coll... | 03/20/1984 |
| 4395076 | Bearing design for drill bit A bearing construction for a rotary earth boring drill bit is constructed of a bearing journal and a cutter rotatively mounted on the bearing journal, the bearing journal having a generally cone-shaped bearing wall formed by a plurality of steps comprised... | 07/26/1983 |
| 4378058 | Reamer-stabilizer A roller reamer-stabilizer tool includes a tubular body having threaded pin and box connectors at each end adapted to be connected in a drill string and providing a fluid passage connecting the upper part of the drill string with the lower part. Rollers h... | 03/29/1983 |
| 4293167 | Rolling cutter drill bit with improved journal configuration A rolling cutter drill bit is disclosed which utilizes a plurality of rolling cutters each rotatably mounted on a lug member having a downwardly extending bearing journal. Each bearing journal has a ball bearing race formed therein for receiving a series ... | 10/06/1981 |
| 4284310 | Rotary drill bit A rotary drill bit assembly comprising a drill bit body, at least one trunnion formed integrally with the drill bit body and a rotary cutter rotatably supported on the trunnion by bearing means. The bearing means consist of at least two rows of balls whic... | 08/18/1981 |
| 4279316 | Earth boring bit with eccentric seal boss A rolling cone cutter earth boring bit is provided with a sealing system that results in the seal being squeezed uniformly around the seal circumference during drilling. The bearing pin seal surface is machined eccentrically to the bearing pin by an amoun... | 07/21/1981 |
| 4274874 | Copper-tin type sintered alloy for oil-impregnated bearing excellent in bearing performance as bearing used in low-load and high-velocity region A copper-tin type sintered alloy for an oil-impregnated bearing excellent in bearing performance particularly as a bearing used in low-load and high-velocity region, having a chemical composition consisting essentially of, in weight percentage: at least o... | 06/23/1981 |
| 4266622 | Rotary rock bit and method of making same A rotary rock bit is described having a one piece bit body with a plurality of legs extending downwardly therefrom. Each leg includes an annular bore extending therethrough for receiving the mounting end of a separate journal pin. Each journal pin also in... | 05/12/1981 |
| 4256193 | Rotary drill bit with rotary cutter A rotary drill bit having a drill bit body and at least one trunnion projecting from the drill bit body and a rotary cutter supported on at least one radial roller bearing on the trunnion. The rolling elements of the bearing are guided on at least one axi... | 03/17/1981 |
| 4235295 | Earth boring bit with renewable bearing surface A rolling cone cutter earth boring bit is provided with a load carrying bearing surface that can be renewed during the earth boring operation. A canister bearing element is positioned between the bearing pin and the rolling cone cutter. The rolling cone c... | 11/25/1980 |
| 4207658 | Journal and pilot bearings with alternating surface areas of wear resistant and anti-galling materials The journal and/or pilot bearings of a rotary cone earth boring bit are constructed to include alternating areas of wear resistant materials and anti-galling materials. The bearing matrix is formed by compressing a powdered alloy in the shape of the desir... | 06/17/1980 |
| 4199201 | Bearing assembly with adjustable lock nut An in-hole, fluid driven motor has a stator and a rotor to drive a bore hole drilling bit. The bit is connected to the rotor by a drive shaft rotatable in a bearing housing connected to the stator, and drilling fluid flows through the drive shaft and exit... | 04/22/1980 |
| 4167220 | System for lubricating the bearings of cutting rollers of a roller bit A system for continuous lubrication of bearings in a drilling apparatus including a roller bit having at least one pivot and a cutting roller rotatably supported on the pivot by bearings. The system comprises pumping means in the form of spiral or oblique... | 09/11/1979 |
| 4136748 | Roller-type rock bit and bearing arrangement therefor A roller-type rock bit has a body which fits into a drill hole and is provided with inwardly directed spindles about which cone-shaped cutters revolve. Between each spindle and its cutter is a tapered roller bearing, a flat thrust bearing, and a sleeve-ty... | 01/30/1979 |
