Quotables
"Radio has no future."
Lord Kelvin, British mathematician and physicist ; 1897
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 |
| 7278499 | Rotary drag bit including a central region having a plurality of cutting structures A rotary drag bit including an inverted cone geometry proximate the longitudinal axis thereof is disclosed. The inverted cone region may include a central region, the central region including a plurality of cutting structures affixed thereto and arranged along at le... | 10/09/2007 |
| 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 |
| 6296069 | Bladed drill bit with centrally distributed diamond cutters A drill bit as used in particular in the oil well drilling field comprising a central body (2), cutting blades (3) protruding with respect to the body (2), both at the front of this body according to a drill direction and at the sides of this same body (2... | 10/02/2001 |
| 6109374 | Roller stabilizer An improved stabilizing tool includes a body with a pocket, and a roller rotatably disposed in the pocket. The body includes a fluid passageway formed axially therethrough. The passageway has a first zone wherein the pressure of the fluid is relatively hi... | 08/29/2000 |
| 4793425 | Profiled body roller-reamer stabilizer A roller-reamer stabilizer having a plurality of roller cutters mounted in recesses in the supporting body such that each roller is free to rotate in its own bearing blocks. The cutters and bearing blocks are provided with air bleed lubrication and coolin... | 12/27/1988 |
| 4765417 | Reaming apparatus for well drilling A drilling tool for use in drilling operations for providing shock absorption capability and lateral support to the rotary drill string. The telescoping axial load shock absorber is positioned immediately adjacent at least one lateral support provided by ... | 08/23/1988 |
| 4709462 | Method for assembling a well drilling tool A drilling tool for use in drilling operations for providing shock absorption capability and lateral support to the rotary drill string. The telescoping axial load shock absorber is positioned immediately adjacent at least one lateral support provided by ... | 12/01/1987 |
| 4527644 | Drilling bit A drilling bit comprising a drill body formed from a base portion and a crown portion having a plurality of cutting elements; the base and crown portions are interengaged by a connection portion. An external opening in the crown portion communicates with ... | 07/09/1985 |
| 4217966 | Junk basket, bit and reamer stabilizer A metal cup with an apertured bottom provides a junk basket. The cup is spindled on the pin of a drill bit, e.g. a tungsten carbide insert roller cone bit, the bottom edge being releasably clamped between the pin shoulder and the shoulder formed by the mo... | 08/19/1980 |
| 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 |
| 4013325 | Drill rod stabilizing tool A stabilizing tool comprising a substantially cylindrical body; said body having a plurality of substantially cylindrical chambers formed therein said chambers being located axially within the body and spaced symmetrically around the body with respect to ... | 03/22/1977 |
