Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 6966385 | Tong positioning system and method A tong positioning system positions a power tong about an oilfield tubular connection to make up or break out a threaded connection. An extendable arm and a retainer device on the extendable arm. In a preferred embodiment, the retainer device comprises opposing late... | 11/22/2005 |
| 6958954 | Device indicating the state of batteries designed to equip a watch The invention concerns a device for indicating the state of watch batteries. Said device comprises, in combination: a circuit for determining (34) at least a physical characteristic of the cell (10) which varies when it is nearly discharged, a circuit ... | 10/25/2005 |
| 6893057 | Threaded pipe connection A coupled version of a threaded connection 10 includes first threads 16, 38 and second threads, 20, 34 on both elongate tubulars 14, 30 and a coupling 45. An integral joint version 50 preferably includes a first and second t... | 05/17/2005 |
| 6881045 | Progressive cavity pump/motor A progressive cavity pump or motor, particularly suitable for hydrocarbon recovery operations, includes a rotor 20 and a stator 10. Fluid pressure in cavities between the stator and the rotor create torque which rotates the bit. An interior surface of ... | 04/19/2005 |
| 6879947 | Method for optimizing the bit design for a well bore A drill bit is designed to achieve optimum performance in a specified drilling application defined by the drilling system, the formation to be drilled and the configuration of the bore hole. A depth of cut versus predicted torque for a basic bit configuration is eva... | 04/12/2005 |
| 6854346 | Purging system for use with a gas sampling system A combination purging system and sampling system is provided for sampling gas from a pipeline. A flow path 40 provides fluid communication between a sample bottle 45 and the pipeline. The sample bottle 45 is initially filled with an inert gas fo... | 02/15/2005 |
| 6851450 | Liquid fertilizer distribution system and method Apparatus and methods are provided for a fluid fertilizer distributor 10, 200, 300, or 400 for distributing fluid fertilizer conducted from a supply vessel 11 to each of a plurality of applicator lines 44. The fluid distributor may regula... | 02/08/2005 |
| 6848518 | Steerable underreaming bottom hole assembly and method A steerable bottom hole assembly may be used for drilling both a curved section and straight section of the borehole, with the bottom hole assembly including a reamer beneath the downhole motor 12. The bottom hole assembly includes a bit 30 having a bi... | 02/01/2005 |
| 6846301 | Disposable safety syringe A safety syringe 10 includes a generally tubular body 14 having a needle end 18 and plunger end 22, needle 38 and retractable needle seat 30, two-way valve 36, plunger 42, stopper 62, piston 52, a... | 01/25/2005 |
| 6843320 | Downhole tool with ratcheting swivel and method A system for perforating a well includes a perforating gun 10 and a swivel 12 suspended from a wireline 50. An orientation sub 14 is provided above the gun 10 and a rotational latching mechanism 90 rotationally connects the ... | 01/18/2005 |
| 6840277 | Breakaway coupling with flapper valve A breakaway coupler for coupling upstream and downstream hose includes one or more locking balls carried by a downstream coupling member. An upstream flapper is pivotally secured with respect to an upstream housing. A pushrod is axially movable in response to engage... | 01/11/2005 |
| 6811189 | Corrosion seal for threaded connections The threaded connection between the pin and the box ends of two pipes is sealed externally and internally to protect the threads in the connection from exposure to corrosive fluids. Seals are provided at each axial end of the threads. The external seals may be forme... | 11/02/2004 |
| 6755254 | Horizontal spool tree assembly A horizontal spool tree assembly 10 is provided for supporting a production tubing string 22 within a well below a BOP. The spool body 12 includes a laterally extending passageway 36 which is in fluid communication with a similar laterall... | 06/29/2004 |
| 6681860 | Downhole tool with port isolation A retrievable hydraulically operated running tool 10, 50 is run in a wellbore to preform a desired downhole tool activation. The port closure member 14, 52 is movable with a tubular body 12 from a port isolation position to an open port position. A seat 1... | 01/27/2004 |
| 6672996 | Pelvic floor exercise device An improved apparatus is disclosed for use in diagnosing and treating pelvic floor musculature disorders. The device includes a head (10) mounted on a shaft (12), with a barrier (14) mounted on the shaft (12) between the handle (18) and head (10). An indi... | 01/06/2004 |
| 6663149 | Threaded closure Methods and systems are provided for a vessel or pipeline closure such as the type used on pipeline pig launching and receiving systems, and closures on access portals for pressurized vessels. A threaded closure 10 is disclosed which may eliminate hammeri... | 12/16/2003 |
| 6454873 | System for processing fiberglass Process and apparatus for recovering clean fiberglass and urea formaldehyde from urea formaldehyde treated waste fiberglass, which involves the use of a continuous batch tunnel machine comprising end to end modules in each of which a perforated basket is ... | 09/24/2002 |
| 6439310 | Real-time reservoir fracturing process Methods are disclosed for hydraulic fracturing of subterranean reservoir formations using various combinations of gelled fluid, nitrogen, and carbon dioxide base components, in association with proppant and other additives. Selected base components are pu... | 08/27/2002 |
| 6367775 | Universal fill valve Fill valve 10 controls the flow of propane from a fill line FL to a control valve CV mounted on a propane use tank T. The fill valve includes a valve body 12 having a propane inlet 20, an elongate sleeve 24 and a discharge housing 22 surrounding the elong... | 04/09/2002 |
| 6360821 | Combination whipstock and anchor assembly A whipstock assembly 10, 110 for setting within a casing C includes a whipstock body 12, 112 having a whipstock diversion face 24, 124 for diverting a tool with respect to the casing. At least one wedge member 32, 132, 133 is moveable relative to the whip... | 03/26/2002 |
| 6354371 | Jet pump assembly A jet pump assembly 10 for use in a subterranean wellbore 82 to lift produced fluids 72 to the surface, comprising a fixed type jet pump assembly 10 including a retrievable insert assembly 30 for retrieving substantially all working components of the jet ... | 03/12/2002 |
| 6352455 | Marine propulsion device The propulsion device (10) includes a housing (12) having an incoming end cap (14) and an outflowing end cap (16). A tubular bladder (20) within the housing is interconnected to each end cap, thereby varying the volume of both a chamber (22) within the bl... | 03/05/2002 |
| 6352361 | Temperature sensing device for metering fluids A thermowell assembly (20) shown in FIG. 2 is positioned in a pipeline (10) for sensing the temperature of the fluid medium in the pipeline (10) for transmitting the sensed temperature to a meter (12). A temperature sensing probe is received within a temp... | 03/05/2002 |
| 6321872 | Support davit arm for retractable fall proctection lanyard The present disclosure sets forth a safety device for scaffolding so that workmen can climb up or down on the exterior of the scaffolding in safety. The apparatus includes an outwardly extending curving davit having an elevated and radially outwardly exte... | 11/27/2001 |
| 6323363 | Amphiphilic compounds with at least two hydrophilic and at least two hydrophobic groups based on dicarboxylic acid diamides The invention concerns amphiphilic compounds of general formula (I) ##STR1## with at least two hydrophilic and at least two hydrophobic groups based on dicarboxylic acid diamides. The disclosed amphiphilic compounds mostly have a surfactant activity and a... | 11/27/2001 |
| 6315523 | Electrically isolated pump-off controller Electrical isolation method and assembly that protects a pump-off controller 31 as used for controlling the pumping of a subterranean well, from lightning and transient electrical power surges by electrically isolating the pump-off controller 31, the isol... | 11/13/2001 |
| 6312637 | Method of making a rod guide with both high erodible wear volume and by-pass area A rod guide fixedly molded around the shank of a sucker rod string with the rod guide including a radially inner non-erodible zone and a radially outer erodible zone. The non-erodible zone includes a radially inner substantially sleeve-shaped portion havi... | 11/06/2001 |
| 6308753 | System for loading and unloading fluid tanks containing hazardous fluids A system for transferring a hazardous fluid product from a transport tank (10) of a roadway vehicle (12) to a fixed storage tank (14). A flexible transfer hose assembly (30) has end couplings (34, 36) which are detachably connected between the transport t... | 10/30/2001 |
| 6303052 | Antioxidant compostions An antioxidant composition comprising at least one compound having the formula: ##STR1## wherein R1 and R2 are each hydrocarbon groups having from 1 to 8 carbon atoms, a is from 1 to 3, R3 is a linear alkyl group having ... | 10/16/2001 |
| 6289752 | Sampling system A system for a sampling hydrocarbon containing gas flowing in a pipeline by collecting a fluid sample in a sampler bottle 55 includes a sample probe 12 secured to and extending outward from the pipeline, a heater body 20 removably secured to the probe, an... | 09/18/2001 |
| 6290636 | Helix centrifuge with removable heavy phase discharge nozzles The centrifuge continuously separates free flowing substances that have different densities. The centrifuge includes a rotor 14 having a cylindrical drum 16 and a conical drum 18. The rotor wall includes discharge ports 48, 48', 48" for a heavy phase and ... | 09/18/2001 |
| 6285014 | Downhole induction heating tool for enhanced oil recovery The tool comprises one or more core-coil assemblies 2 jacketed in an non-magnetic and electrically insulating, tubular outer housing, 10. The housing enables high power transfer efficiency. A structural skeleton 20 extends longitudinally through the tool ... | 09/04/2001 |
| 6279426 | Power tong with improved door latch An open throat power tong 10 for making up and/or breaking apart an oilfield tubular connection includes an open throat in the tong body 15. Motors 18, 20 rotate a partial ring member 12 and a pair of heads 16 with respect to the tong body. A door 40, 140... | 08/28/2001 |
| 6276651 | Mounting device for flagpoles A mounting device (14) for a flagpole (10) is mounted on a fixed horizontal support rail (16). Mounting device (14) has two generally identical parallel clamping plates (18, 20) each having a flagpole opening (28) for receiving the flagpole (10) and a stu... | 08/21/2001 |
| 6269684 | Dynamic fluid loss cell apparatus and method thereof A dynamic fluid loss cell apparatus and method for measuring filter-cake build-up on a simulated core of the well-bore and for measuring the effectiveness of a spacer fluid to remove filter-cake. There is also provided, a dynamic fluid loss cell apparatus... | 08/07/2001 |
| 6269892 | Steerable drilling system and method A bottom hole assembly 10 for drilling a deviated borehole includes a positive displacement motor 12 having a substantially uniform diameter motor housing outer surface without stabilizers extending radially therefrom. The motor housing 14 has a fixed ben... | 08/07/2001 |
| 6268517 | Method for producing surfactant compositions A process for producing a surfactant composition by partially saponifying an alkoxylated triglyceride having the formula: ##STR1## with an alkali metal hydroxide such as sodium hydroxide and in the presence of from 5 to 10% free water, removing water by h... | 07/31/2001 |
| 6264659 | Method of treating an intervertebral disk A process of injecting a thermoplastic material (20) within an annulus fibrosus of a selected intervertebral disk. The thermoplastic material (20) is heated by an injection device to a predetermined high temperature to provide flow of the thermoplastic ma... | 07/24/2001 |
| 6253569 | Portable storage unit for game animals A portable animal storage unit comprising a pliable, foldable panel, said panel having an inner facing and an outer facing, a first side edge, a second side, a top edge, and a bottom edge, the inner facing and outer facing defining an insulating space the... | 07/03/2001 |
| 6250605 | Valve actuator apparatus A valve actuator apparatus and method comprises an operator housing secured to a bonnet assembly. The bonnet assembly is secured to the valve body, and includes a bonnet stem movably within a bonnet housing for moving a gate within the valve body to open ... | 06/26/2001 |
