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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7478793 | Filler spout with opening servo-controlled by a pilot valve A filler spout comprising a tubular body having a transverse partition pierced by an opening forming a valve seat which is associated with a main valve member that is connected to a piston extending in a pilot cavity connected to an exhaust orifice and to a pilot du... | 01/20/2009 |
| 7370615 | Variable valve actuator Improved actuators and valve control systems, and methods for controlling actuators and/or engine valves, are disclosed. In addition to the inherent capability of timing control, the ability to provide continuous valve lift or stroke control greatly improves engine ... | 05/13/2008 |
| 7357367 | Embedded high temperature valve A high temperature valve for controlling gas flow includes an outer vessel, a valve housing, and a valve element. The valve housing is disposed at least partially within, and is at least partially surrounded by, a propellant gas flow passageway that is formed in the... | 04/15/2008 |
| 7325781 | Automatic bathroom flushers with modular design A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou... | 02/05/2008 |
| 7290509 | Variable valve actuator Improved actuators and valve control systems, and methods for controlling actuators and/or engine valves, are disclosed. In addition to the inherent capability of timing control, the ability to provide continuous valve lift or stroke control greatly improves engine ... | 11/06/2007 |
| 7237472 | Linear hydraulic stepping actuator with fast close capabilities The invention provides a choke system with hydraulic circuits which provide choke valve positioning that can be varied by the use of incremental steps. The incremental movement action in either the opening or closing direction is accomplished through the use of one ... | 07/03/2007 |
| 7213644 | Cavity positioning tool and method In accordance with the teachings of the present invention, a method is provided for preventing formation of sludge in a subsurface cavity having particulate laden fluid disposed therein. The method includes positioning a downhole device having a fluid agitator into ... | 05/08/2007 |
| 7213549 | Variable valve actuator Improved actuators and valve control systems, and methods for controlling actuators and/or engine valves, are disclosed. In addition to the inherent capability of timing control, the ability to provide continuous valve lift or stroke control greatly improves engine ... | 05/08/2007 |
| 7210502 | Microvalve device suitable for controlling a variable displacement compressor A device is disclosed for controlling a variable displacement compressor. The device comprises a microvalve operated control valve. A microvalve device for controlling fluid flow and a micro spool valve for use as a microvalve are also disclosed. ... | 05/01/2007 |
| 7207390 | Method and system for lining multilateral wells In accordance with one embodiment of the present invention, a method for lining a lateral wellbore includes drilling a main wellbore extending from a surface to a subterranean zone, casing the main wellbore with a main casing having a plurality of lateral wellbore w... | 04/24/2007 |
| 7207395 | Method and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement A method and system for testing a partially formed well includes forming a first well bore intersecting a subterranean formation. The first well bore includes a portion of a planned well having a first configuration. A production characteristic of the subterranean f... | 04/24/2007 |
| 7195225 | Rotary valve assembly The present invention is directed to rotary valve assemblies and, more particularly, to a rotary valve assembly for use in an oil and gas production system. The valve assembly comprises a movable actuator sleeve movable in response to hydraulic pressure and at least... | 03/27/2007 |
| 7188822 | Enclosures for automatic bathroom flushers A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou... | 03/13/2007 |
| 7163063 | Method and system for extraction of resources from a subterranean well bore A method for stimulating production of resources from a coal seam includes forming a drainage well bore in the coal bed that has a first end coupled to a ground surface and a second end in the coal seam. The method further includes inserting a liner into the well bo... | 01/16/2007 |
| 7156363 | Bathroom flushers with novel sensors and controllers A bathroom flusher (10) includes a body having an inlet (12) in communication with a supply line and an outlet (16) in communication with a flush conduit, a valve assembly in the body positioned to close water flow between the inlet and the outl... | 01/02/2007 |
| 7131629 | Composite valve for gas supply system An automatic-and-manual operation composite valve includes a valve main body into which an air is supplied and from which the air is discharged, a piston provided within the valve main body to be vertically movable by means of the air supplied or discharged and a sn... | 11/07/2006 |
| 7100687 | Multi-purpose well bores and method for accessing a subterranean zone from the surface A well system includes at least two well bores extending from a surface to a subterranean zone. Each of the two well bores is used to form a well bore pattern for the subterranean zone that intersects the other well bore and transports fluid from the subterranean zo... | 09/05/2006 |
| 7077376 | Water saver valve The present invention relates to a valve designed to be in series with a toilet water supply line and the inlet of a toilet tank so that water which is flowing into the tank must flow through the valve. The valve includes a shutoff spool that is actuated by an inten... | 07/18/2006 |
| 7073595 | Method and system for controlling pressure in a dual well system A method for controlling pressure of a dual well system includes drilling a substantially vertical well bore from a surface to a subterranean zone and drilling an articulated well bore from the surface to the subterranean zone using a drill string. The articulated w... | 07/11/2006 |
| 7070159 | Vacuum regulating valve A vacuum regulating valve includes a valve casing provided with two main ports, a passage connecting the two main ports, a valve seat formed in the passage, a valve element capable of being seated on the valve seat, a valve stem extending from the valve element, and... | 07/04/2006 |
| 7051991 | Control valve An actuator operated by a solenoid and a force amplifying means utilizing hydraulic pressure are used in combination with a diaphragm, to thereby provide a diaphragm valve made of Teflon™, and which is compact in size, has low power consumption, and which is capab... | 05/30/2006 |
| 7048049 | Slant entry well system and method A system for accessing a subterranean zone from the surface includes an entry well bore extending down from the surface. A plurality of slanted well bores extend from the entry well bore to the subterranean zone. Drainage patterns extend from the slanted well bores ... | 05/23/2006 |
| 7036584 | Method and system for accessing a subterranean zone from a limited surface area A method and system for accessing subterranean resources from a limited surface area includes a first well bore extending from the surface to the target zone. The first well bore includes an angled portion disposed between the target zone and the surface to provide ... | 05/02/2006 |
| 7025154 | Method and system for circulating fluid in a well system A method for circulating drilling fluid in a well system includes drilling a substantially vertical well bore from a surface to a subterranean zone and drilling an articulated well bore from the surface to the subterranean zone. The articulated well bore is horizont... | 04/11/2006 |
| 7025137 | Three-dimensional well system for accessing subterranean zones A drainage system for accessing multiple subterranean zones from the surface includes an entry well extending from the surface. The system also includes two or more exterior drainage wells extending from the entry well through the subterranean zones. The exterior dr... | 04/11/2006 |
| 7000893 | Servo-valve control device and servo-valve control system with abnormality detection A servo-valve control device for controlling servo-valve opening. The servo-valve opening follows a target by inputting signals of a servo-valve opening target value and of an actual servo-valve opening. The control device has a controller, which is constructed to r... | 02/21/2006 |
| 6997209 | Locking device of an air-operated normally-closed valve for a gas cylinder A locking device of an air-operated normally-closed valve for a gas cylinder includes a housing; a piston assembly provided in the housing; a tapered axial member having an annular outer tapered surface and positioned coaxially with the piston assembly axis; a lock ... | 02/14/2006 |
| 6976533 | Method and system for accessing subterranean deposits from the surface Improved An improved method and system for accessing subterranean deposits from the surface that substantially eliminates or reduces the disadvantages and problems associated with previous systems and methods. In particular, the present invention provides an articul... | 12/20/2005 |
| 6969042 | Blowout preventer and ram actuator A blowout preventer with a main body; a base releasably connected to the main body, the base having a base space therein, the base having a ram shaft opening; a primary piston movably disposed within the base space; a ram shaft to which the primary piston is connect... | 11/29/2005 |
| 6964298 | Method and system for accessing subterranean deposits from the surface An improved method and system for accessing subterranean deposits from the surface substantially eliminates or reduces the disadvantages and problems associated with previous systems and methods. In particular, the present invention provides an articulated well with... | 11/15/2005 |
| 6964308 | Method of drilling lateral wellbores from a slant well without utilizing a whipstock In accordance with one embodiment of the present invention, a method for drilling a lateral wellbore from a slant well includes drilling the slant well below the surface of the earth such that the slant well is angled toward a first horizontal direction that coincid... | 11/15/2005 |
| 6962323 | Apparatus comprising a rotary-acting pilot valve A rotary-acting valve is disclosed. In some embodiments, the rotary-acting valve is the pilot or first stage of a two-stage control valve and can be used to create an improved propulsion system for a missile. In the illustrative embodiment, the rotary-acting pilot v... | 11/08/2005 |
| 6945507 | Gas flow control A gas flow controller includes a control valve coupled for actuating a main valve. In one example embodiment, a gas flow controller includes a main valve and a servo valve operated by an actuator, said servo valve being used for controlling the opening of the main v... | 09/20/2005 |
| 6942030 | Three-dimensional well system for accessing subterranean zones A method for accessing a plurality of subterranean zones from the surface includes forming an entry well from the surface and forming two or more exterior drainage wells from the entry well through the subterranean zones. The exterior drainage wells each extend outw... | 09/13/2005 |
| 6934976 | Toilet flusher with novel valves and controls A tank-type flusher includes an intake valve, i.e., a fill valve, a diaphragm-operated flush valve, and a pressure control mechanism. The intake valve is connected to an external water source and is constructed to close water flow to a water storage tank at about a ... | 08/30/2005 |
| 6771178 | Method of identifying actuators in a motor-vehicle air-conditioning installation A flap to be identified is caused to move over the whole of its angular range of travel. The number of motor steps is counted during this movement, and the number of steps counted is compared with at least one pre-recorded information item corresponding to a particu... | 08/03/2004 |
| 6659247 | Pneumatic volume booster for valve positioner The system controls the position of a pneumatically operated valve using an electrical control signal from a controller. A pilot circuit of the system has multiple piezo valves that are subject to electrical signals from the controller to provide pneumati... | 12/09/2003 |
| 6612536 | Remote shut-off valve This invention relates to a remote shut-off valve, and in particular to a valve for the remote shutting-off of a fluid such as a main water supply. The remote shut-off valve comprises a diaphragm valve and a pilot valve which are connected together by way... | 09/02/2003 |
| 6607174 | Dispensing apparatus with in-line actuator This dispensing apparatus includes a shut-off valve having a magnetically actuated valve element. The valve element is moved into an open position by magnetic attraction from a magnet mounted to a movable actuator. The actuator is adapted to be raised by ... | 08/19/2003 |
| 6601552 | Hydraulically controllable globe valve A hydraulically controllable globe valve having a stem piston to which pressure can be applied by a spring connected to a pressure source, with the stem piston being able to move from a first end position in the direction of a second end position. Pressur... | 08/05/2003 |
