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| Number | Title | Issue Date |
| 6715550 | Controllable gas-lift well and valve A gas-lift well having a controllable gas-lift valve is provided. The well uses the tubing and casing to communicate with and power the controllable valve from the surface. Induction chokes at the surface and downhole electrically isolate the tubing from the casing.... | 04/06/2004 |
| 6715551 | Apparatus and methods for applying time lapse VSP to monitor a reservoir Subterranean reservoir monitoring method, computer system with programming code for implementing the method, and computer readable media and data signal embodying such programming code, the method including one or more of: (a) reservoir screening; (b) reservoir mode... | 04/06/2004 |
| 6715552 | Well cementing methods and compositions Methods of cementing subterranean zones penetrated by well bores and well cement compositions are provided. A well cement composition of the invention is basically comprised of a hydraulic cement, water in an amount sufficient to form a pumpable slurry and a fluid l... | 04/06/2004 |
| 6715553 | Methods of generating gas in well fluids Improved methods of generating gas in and foaming aqueous well fluids introduced into a subterranean zone are provided. A method of the invention includes the steps of combining with an alkaline aqueous well fluid one or more gas generating chemicals and a mixture o... | 04/06/2004 |
| 6715554 | Slimbore subsea completion system and method A tubing spool has an internal landing profile for a reduced diameter tubing hanger which is arranged and dimensioned to pass through the bore of a slimbore marine riser and BOP of a subsea completion system. The tubing spool is arranged and designed for securement ... | 04/06/2004 |
| 6715555 | Subsea well production system A tubing hanger positioned within the bore of a wellhead body has a vertical bore from which a tubing string may be suspended within a well bore. When the hanger is landed, a fluid passageway in the tubing hanger has one end in fluid communication with a passageway ... | 04/06/2004 |
| 6715556 | Gas restrictor for horizontally oriented well pump An intake assembly for a well pump restricts gas entry into the pump when the pump is located in a horizontal section of the well bore. The restrictor is located within a tubular intake housing. The intake housing has apertures for receiving the flow of well fluid. ... | 04/06/2004 |
| 6715557 | Tool string A tool string for deployment in a wellbore includes an upper string and a lower string. The upper string includes a valve actuator, and the lower string includes a valve. The lower string is adapted to receive the upper string, and the valve actuator controls the op... | 04/06/2004 |
| 6715558 | Infinitely variable control valve apparatus and method In carrying out the principles of the present invention, in accordance with an embodiment thereof, an annular choke apparatus, and methods of use, are provided for use within a subterranean well. In broad terms, a choke tool apparatus is provided which includes an o... | 04/06/2004 |
| 6715559 | Gripper assembly for downhole tractors A gripper assembly for anchoring a tractor within a downhole passage and for assisting movement of the tractor within the passage. The gripper assembly includes an elongated mandrel and flexible toes that can be radially displaced to grip onto the surface of the pas... | 04/06/2004 |
| 6715560 | Collet-cone slip system for releasably securing well tools A selectively released well tool anchor has a tubular wicker shoe cage and a tubular setting sleeve in sliding assembly over a tubular mandrel. The wicker shoe cage confines a plurality of independent wicker shoes. The tubular setting sleeve has a conical slip face ... | 04/06/2004 |
| 6715561 | Vacuum dry sprinkler system containing a sprinkler head with expulsion assembly A vacuum dry sprinkler system includes a sprinkler head formed with a body having a central orifice through which fire extinguishing fluid is expelled through an outlet end. A yoke, attached to the exterior surface of the sprinkler body, extends beyond the outlet en... | 04/06/2004 |
| 6715562 | Output shaft locking device An output shaft locking device includes a hollow frame through which an output shaft extends. The output shaft has a polygonal end which is connected to a driving device. A locking device includes a fixed ring received in an underside of the hollow frame and an inne... | 04/06/2004 |
| 6715563 | Method and apparatus for vibratory kinetic energy generation and applications thereof A device and method for performing a task employing vibration of a tool. The device includes a housing containing at least one off-center weight, and the off-center weight is coupled to a motor and configured to rotate or revolve to vibrate the housing. The housing ... | 04/06/2004 |
| 6715564 | Hydraulic drilling rig A drilling rig (10) having a boom (12) supporting a leader (36). The leader (36) is pivotally attached to the boom and is moveable between a generally upright orientation and a generally horizontal orientation for the purposes of transpor... | 04/06/2004 |
| 6715565 | Subterranean boring machine A drive mechanism for a subterranean boring machine includes a drive motor, primary and secondary drive wheels, a drive sprocket and an idler sprocket attached to the primary and secondary drive wheels, respectively, and a chain operatively extending between the dri... | 04/06/2004 |
| 6715566 | Balance structure for rotating member A balancing structure to reduce vibration created in a rotating body by imbalance comprises an annular groove formed in the body, the groove partially filled with a quantity of solid balls. The solid balls, by only partially filling the groove, provide a stabilizing... | 04/06/2004 |
| 6715567 | Apparatus and method for forming a pilot hole in a formation The present invention generally provides an apparatus and method for forming a pilot hole in a formation. In one aspect of the present invention, the apparatus may comprise a starter mill connected to a bearing mill by a body joint. The apparatus may further compris... | 04/06/2004 |
| 6715568 | Latex additive for water-based drilling fluids The use of polymer latices is described for fluid loss control in water-based drilling fluids. The latices used are water insoluble. The latices are essentially non-swelling in an aqueous solution. The latices are selected from known latices such that they are absor... | 04/06/2004 |
| 6715569 | Boom type power tong positioner Apparatus for positioning a power tong at a desired location with respect to the distance above the rig floor, and with respect to the center of the rig floor. A pedestal is secured to the structure of the rig. An upright member is mounted on the upper end of the pe... | 04/06/2004 |
| 6715570 | Two stage downhole drilling fluid filter A two stage filter for drilling fluid using downhole tools filters solid materials from the drilling fluid and has a first, outer filter section and a second, inner filter section. A portion of the drilling fluid flowing through the first section is received by the ... | 04/06/2004 |
| 6715571 | Fuel cell powered motor vehicle A fuel cell and a reformer are disposed above and in the vicinity of a horizontal straight line connecting the center of a front axle and the center of a rear axle of a motor vehicle. A fuel tank is disposed in a position above the fuel cell and the reformer. In the... | 04/06/2004 |
| 6715572 | Control system for hybrid vehicle A hybrid vehicle comprises a torque converter TC, which is connected to an engine E, a gear-type speed change mechanism, shift clutches 13c and 14c, a drive power transmission system, which transmits output rotation to drive wheels 6 | 04/06/2004 |
| 6715573 | Radiator core support structure for vehicle A radiator core support structure for a vehicle including a radiator core support upper section extending generally along a direction of width of the vehicle. A radiator core support lower section is provided extending generally along the direction of width of the v... | 04/06/2004 |
| 6715574 | Airstream control system for a hovercraft Three aspects are disclosed of an airstream control system for a hovercraft that includes a platform and a lift gas chamber beneath the platform. Firstly, the system includes an impeller for receiving air at an inlet and discharging pressurized air at an outlet as a... | 04/06/2004 |
| 6715575 | Track tensioning system for a tracked vehicle A suspension system for suspending an endless track beneath a tracked vehicle chassis. The suspension system can be a fully coupled suspension, a partially coupled suspension or a non-coupled suspension. The suspension system includes at least one elongated suspensi... | 04/06/2004 |
| 6715576 | Mechanical transmission for agricultural vehicles of adjustable track width A mechanical transmission for agricultural vehicles of adjustable track width has gear cases disposed vertically to elevate a chassis height of vehicle above a plantation, rear axles provided for wheels of the machine and mounted to the gear cases, first gears and s... | 04/06/2004 |
| 6715577 | Fore-end assembly with improved shock absorbing means for motorcycles A fore-end assembly for a motorcycle including an improved shock absorbing assembly, characterized in that the fore-end assembly comprises a single shock absorbing element coupled to the motorcycle chassis, and supporting, at the bottom thereof, at least an arm for ... | 04/06/2004 |
| 6715578 | Cable steering system A cable steering system is provided in which first control means controls the operation of a power steering motor disposed between Bowden cables and wheels based on a steering torque detected by a steering torque detection means disposed between a steering wheel and... | 04/06/2004 |
| 6715579 | Articulated frame work vehicle A work vehicle is provided with an articulated frame having a first frame segment and a second frame segment that are pivotally coupled to one another by a vertical pivot. An actuator is coupled to the frame segments for articulating the segments relative to one ano... | 04/06/2004 |
| 6715580 | Gas flow-through line with sound absorption effect The present invention relates to a gas flow-through line with a sound absorption effect. Thereby the wall (5) of the line (1) has through-going perforations (2) having a diameter of less than 1 mm. The invention can for example find employment i... | 04/06/2004 |
| 6715581 | Exhaust pipe and muffler for motorcycle that does not heat discolor A chromed exhaust pipe and muffler for motorcycles that is capable of withstanding the extreme heat generated at high rpm's of a motorcycle engine without discoloring or “bluing”. A double wall construction is utilized for the exhaust pipe and muffler with the b... | 04/06/2004 |
| 6715582 | Suction muffler The invention relates to a suction muffler for a hermetically enclosed compressor, with a housing having a first part with an outlet channel and a second part with an inlet channel, flow conducting means being arranged between the outlet channel and the inlet channe... | 04/06/2004 |
| 6715583 | Silencer and power enhancement environmental device A device to muffle and purify the exhaust gases from an internal combustion engine. A housing is divided into several chambers with the exhaust gases passing from one chamber to another, each successive chamber diverting the gas flow into an opposing direction. The ... | 04/06/2004 |
| 6715584 | Escape ladder An escape ladder includes a first leg that is attached to a support surface, such as an outside wall of a building, and a second leg that is movable with respect to the first leg. Rungs are movably attached to the first leg and to the second leg and move between a d... | 04/06/2004 |
| 6715585 | Tree stand A tree stand has a platform and seat portion that are used together. The two portions are very similar and differ in that the platform has a grid on which a hunter can stand, and the seat portion has a sling in which the hunter can sit. Both portions have a frame wi... | 04/06/2004 |
| 6715586 | Upgraded elevator control circuit and method dealing with fire danger A method for upgrading an elevator control circuit having a phase 1, alternate and phase 2 input circuits, includes placing a first impedance of a switching device across a door motor armature of the elevator control circuit for enabling a selected doo... | 04/06/2004 |
| 6715587 | Load carrying means for cable elevators with integrated load measuring equipment A load carrying and measuring apparatus for cable elevators includes a support construction attached to an underside of a base frame or a carrier frame for an elevator car and a pair of cable rollers attached below the support construction for engaging a support cab... | 04/06/2004 |
| 6715588 | Spot type disc brake with parking brake function A spot-type automotive disc brake (10) provides parking brake and primary brake functions based on the same pair of friction elements (16, 18) and without resorting to supplemental drums or supplemental friction elements. The mechanism is simple and ca... | 04/06/2004 |
| 6715589 | Self-servoing disc brake rotor A self-servoing disc brake assembly is provided that includes a driven rotor member having a first inner surface with a plurality of first pockets. The driven rotor member also includes a first friction surface spaced from the first inner surface. A movable rotor me... | 04/06/2004 |
