Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 6257295 | Button shank wrapping machine A machine has a support (3) which receives and supports a button shank (6) at a support station (4); a winding device (12) rotates thread (21) through an outlet (25) to wind it around the shank supported in the support under the control of tensioner (17);... | 07/10/2001 |
| 6158093 | Line connector mechanism and method of use thereof A wire socket connector having an open throated basket type body that incorporates a load supporting connection at the upper portion thereof for connection with a lifting device in the form of a chain, wire line, lifting hook or the like. The body defines... | 12/12/2000 |
| 6145594 | Gate valve for subsea completion system A caisson gate valve (10) fitting within an outer casing (12) extending downwardly from a subsea wellhead below the sea floor is disclosed. The gate valve (10) includes a valve body or block (14) having an axial bore or flow passage (16) therethrough and ... | 11/14/2000 |
| 6109989 | Submerged pipeline manifold for offloading mooring buoy and method of installation In certain offshore locations, for example off the West Coast of Africa, FPSO facilities provide an offloading facility to receive and load produced crude oil onto shuttle tankers. In such arrangements FPSO facilities use spread moored tankers with flowli... | 08/29/2000 |
| 6109618 | Rotary seal with enhanced lubrication and contaminant flushing A resilient, ring shaped interference-type hydrodynamic rotary seal having waves on the lubricant side which provide increased film thickness and flushing action by creating contact pressure induced angulated restrictions formed by abrupt restrictive dive... | 08/29/2000 |
| 6095242 | Casing hanger A casing hanger assembly is disclosed which includes a bottom member which centralizes a casing string within a casing head and a top member of a conventional slip-type casing hanger design. The bottom member functions to rigidly centralize the casing str... | 08/01/2000 |
| 6093009 | Apparatus and method for controlling angular relation between two rotating shafts The timing gear device or structure (26) has a pair of timing gears (28, 30) mounted on parallel rotating shafts (22, 24). Each timing gear (28, 30) has an outer gear portion (32) and a concentric interfitting inner gear portion (34). Outer gear portions ... | 07/25/2000 |
| 6068477 | Foam-cushioned aspirator A disposable cushioned aspirator which forms part of a dental or medical aspirating system. The disposable cushioned aspirator appliance described herein is intended principally to be used in dental procedures where bodily fluids and rinse water is evacua... | 05/30/2000 |
| 6059620 | Arrangement for minimizing the explosion potential in moored turrets for hydrocarbon storage vessels An improved arrangement for connection of a disconnectable spider buoy to an internal turret of a floating production storage and off loading vessel is disclosed. Risers from subsea wells are connected by quick disconnect/connection devices to pipes which... | 05/09/2000 |
| 6053202 | Fail-safe closure system for remotely operable valve actuator A fail-safe closure system for one or a plurality of springless process valve actuators is disclosed. An accumulator is provided with an urging means, such as a spring for pressurizing fluid stored therein. A source of pressurized fluid is also provided. ... | 04/25/2000 |
| 6030004 | High torque threaded tool joint for drill pipe and other drill stem components A double shouldered high torque resistance threaded connection for drill stem components having enhanced resistance to torque forces, tensile loads and material stress and fatigue is disclosed. The tool joint is provided with threads having a 75° include... | 02/29/2000 |
| 5992199 | Modular knurling tool A modular knurling tool is provided having a tool shank defining a first dove-tail connector and having at least one adjustment drive recess. Any selected one of a number of different knurling heads are adjustably connected to the tool shank by a second d... | 11/30/1999 |
| 5992473 | System for injecting additive within a fuel tank A system for injecting an additive within a fuel storage tank or the fuel tank (10) of a vehicle (12) including an additive injector (22) mounted within the tubular inlet (14) of the fuel tank (10). The additive injector (22) includes an additive pump (46... | 11/30/1999 |
| 5992526 | ROV deployed tree cap for a subsea tree and method of installation A lightweight ROV deployable tree cap (28) for deployment on a subsea production hub (10) of a subsea tree. A tree cap (28) has a lightweight body (30) with parallel planar sides and including suitable openings and slots for mounting of the various operat... | 11/30/1999 |
| 5985365 | Method and automated apparatus for galvanizing threaded rods An automated method and apparatus for galvanizing threaded rods, comprising conveying threaded rods while horizontally oriented through a bath of molten zinc, then simultaneously spinning the threaded rods in horizontal orientation at sufficient rotationa... | 11/16/1999 |
| 5973252 | Pitch detection and intonation correction apparatus and method A device and method is disclosed to correct intonation errors and generate vibrato in solo instruments and vocal performances in real time. The device determines the pitch of a musical note produced by voice or instrument and shifts the pitch of that note... | 10/26/1999 |
