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A space-saving dishwasher, which may be installed within a counter top or table, having a dish-carrying rack that is vertically shiftable through the open top of the dishwasher for facilitating loading and unloading of the dishes.

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Class 166/320 - Variably opened


Subclass of Class 166 - Wells
Definition: Devices in which the valve element is adjustable to control
No. of patents: 120
Last issue date: 01/18/2011


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NumberTitleIssue Date
7870906Flow control systems and methods
Disclosed herein is a device for controlling flow within, e.g., a production well or an injection well. The device consists of a movable flow passage and a stationary variable choke or valve that is sensitive to flow parameters and automatically adjusts itself to pr...
01/18/2011
7766084Downhole tool
A downhole tool (10) comprises a body (12) defining a bore. The body includes a valve arrangement (18) including flow ports (24) in the wall of the body. The ports may be opened or closed. In addition, a variable flow restriction (30
08/03/2010
7708074Downhole valve for preventing zonal cross-flow
A flow control valve for use in a downhole completion tubing string, where the control valve prevents cross flow between producing zones. The control valve comprises a housing forming a plenum therein, a tubular member having a perforated end disposed in the housing...
05/04/2010
7594542Alternate path indexing device
An embodiment of a method of shifting a valve between a plurality of flow condition positions, includes the steps of providing a mechanical indexer device in operational connection with a valve, the indexer device including a primary path defining a sequence through...
09/29/2009
7416026Apparatus for changing flowbore fluid temperature
A flowbore fluid temperature control system comprising a valve mechanism that adjusts the flow of a fluid through a flowbore. The flowbore fluid temperature control system also comprises an actuator that adjusts the valve mechanism. The flowbore fluid temperature co...
08/26/2008
7370705Multiple zone downhole intelligent flow control valve system and method for controlling commingling of flows from multiple zones
A production control system having a series of nested tubular members including at least one axial flow channel and at least two annular flow channels. At least one valve configured and positioned to control flow from each flow channel is provided. A producti...
05/13/2008
7331396Subsea production systems
A subsea production system is disclosed. The subsea production system may comprise a well head, a tubing spool, a tubing hanger, an annulus, a production tree, and a bypass flow path. ...
02/19/2008
7331392Pressure range delimited valve
A differential pressure valve has a valve body containing a main piston axially moveable therein to open a fluid inlet to a fluid outlet at preset high pressure and to close at a preset lower pressure. A high pressure trigger piston and a low pressure trigger piston...
02/19/2008
7322432Fluid diverter tool and method
The present invention relates to a diverter tool used in a pipe string used to lower a liner and a cutting apparatus on the end thereof into a partially cased wellbore. The diverter tool has a diverter body that defines a longitudinal flow passage and has the divert...
01/29/2008
7306043System and method to control multiple tools through one control line
The invention is a system and method a system used to control multiple downhole tools with one control line. The downhole tools may comprise any hydraulically actuated tools, such as valves, packers, or perforating guns. Each tool is associated with an indexer, in o...
12/11/2007
7264059Method and device for pressure controlled sequential operation
A method and a device for controlling a downhole hydraulic sequential control system (1) in which a number of pressure relief valves (20, 22) are arranged to open sequentially directly or indirectly for corresponding actuators (26, 34) through i...
09/04/2007
7255178Drillable bridge plug
A method and apparatus for use in a subterranean well is described. The apparatus typically includes a mandrel and a packing element. The mandrel may have an outer surface and a non-circular cross-section and a the packing element may be arranged about the mandrel, ...
08/14/2007
7252149Safety valve lock out system and method
A safety valve lock out system and method. In a described embodiment, a method of locking out a safety valve in a subterranean well includes the steps of: flowing a hardenable fluid into the safety valve; and preventing a closure device of the safety valve from clos...
08/07/2007
7243727Isolation assembly for coiled tubing
An isolation assembly for use with coiled tubing is described. The isolation assembly has a check valve for providing selective fluid communication through from the coiled tubing, through the isolation assembly, and into a downhole tool, such a straddle packer. The ...
07/17/2007
7234522Apparatus and method for drilling a wellbore with casing and cementing the casing in the wellbore
A float system for use in cementing a casing in a wellbore. The wellbore is drilled with a drill bit attached to the casing. The drill bit is removed after the wellbore is drilled. The float system is lowered into the casing after the drill bit is removed. The float...
06/26/2007
7234518Adjustable well screen assembly
An adjustable well screen assembly having a sand screen which is wrapped around a perforated base pipe and a perforated sleeve which is movably disposed concentrically inside the base pipe between a first, closed, and a second, open, position. In the first position ...
06/26/2007
7195033Method and system for determining and controlling position of valve
Apparatuses and methods for accurately determining the position of a sliding or rotational sleeve valve in real time are disclosed. The apparatus comprises fiber optic cable based sensors which are either linearly or circumferentially arrayed in the housing that sur...
03/27/2007
7185704Service tool with flow diverter and associated method
A downhole service tool is provided that may include a body having an interior passageway, at least one exit port through which fluid may flow from the interior passageway to an exterior of the tool, and at least one diverting channel adapted to cause fluid exiting ...
03/06/2007
7168507Recalibration of downhole sensors
In downhole drilling tools, a first set of inexpensive and/or relatively small sensors that typically have lower accuracy and higher drift than conventional downhole sensors are located in the drill string adjacent to the bit. A second set of highly accurate sensors...
01/30/2007
7156578Aquifer recharge valve and method
An aquifer recharge valve assembly comprises a valve movable along the interior of a pipe section to open and close aquifer recharge openings through the pipe section. The position of the valve controls the extent to which the recharge openings are available for del...
01/02/2007
7134488Isolation assembly for coiled tubing
An isolation assembly for use with coiled tubing is described. The isolation assembly has a check valve for providing selective fluid communication through from the coiled tubing, through the isolation assembly, and into a downhole tool, such a straddle packer. The ...
11/14/2006
7077205Method and device to free stuck objects
A method of freeing stuck objects (16) from a bore (14) comprises running a string (12) into the bore (14), the string (12) including a flow modifier, such as a valve, for producing variations in the flow of fluid through the strin...
07/18/2006
7055610Plug concealment and diversion tool
A tool for capturing and retaining a pump down plug or ball which has been released from equipment above in a well bore, concealing the pump down plug from subsequent flow of fluid or other material through the tool, and diverting flow from a normal circulation port...
06/06/2006
7044229Downhole valve device
A downhole valve device (1) in a drill string (14) in a petroleum well (2) and method for maintaining optimal annular fluid velocity and wellbore pressure. The device comprises a valve housing (20) connected between adjacent segments (...
05/16/2006
6995352Fiber optic based method and system for determining and controlling position of a sliding sleeve valve
An apparatus and method for determining the position of a hydraulically actuated sliding sleeve valve in real time is disclosed. The apparatus comprises, in a preferred embodiment, a reference sensor and a position sensor, both of which constitute fiber optic windin...
02/07/2006
6973974Valves for use in wells
A valve assembly to control the intake of fluid. The valve assembly has a valve body and a valve choke disposed therein. The valve choke has a choke bore through the interior of the valve choke. The valve choke has a plurality of orifices to the choke bore spaced at...
12/13/2005
6966380Valves for use in wells
A valve assembly to control the intake of fluid. The valve assembly has a valve body and a valve choke disposed therein. The valve choke has a choke bore through the interior of the valve choke. The valve choke has a plurality of orifices to the choke bore spaced at...
11/22/2005
6948561Indexing apparatus
An indexing mechanism is disclosed that can put a tool in a variety of positions while downhole in the face of high static and dynamic loads. In the preferred application, the mechanism controls a movable sleeve on a downhole choke. It contains an indexing feature c...
09/27/2005
6892816Method and apparatus for selective injection or flow control with through-tubing operation capacity
An in-line flow control device for a well chokes flow through a conduit while allowing access therethrough. ...
05/17/2005
6866101Control system with failsafe feature in the event of tubing rupture
An improved control system, particularly useful for SSVs, is disclosed. It is responsive to a rupture of the tubing and control line to equalize pressure on an operating piston to allow the SSV to go to its failsafe position. The annulus pressure-sensing feature can...
03/15/2005
6860330Choke valve assembly for downhole flow control
A choke valve assembly is disclosed for controlling the flow of fluid through a production tubing. The valve assembly includes a housing having a plurality of axially aligned apertures and a ported sleeve disposed in the housing. The ported sleeve has a plurality of...
03/01/2005
6851477Curved flapper with angle variant seat for a subsurface safety valve
A subsurface safety valve for controlling fluid flow in a well bore. In one embodiment, the subsurface safety valve includes a tubular member having a longitudinal bore extending therethrough, a curved flapper removably connected to the tubular member. The curved fl...
02/08/2005
6834889Torque release coupling for use in drill strings
This invention relates to a torque release coupling for use in drill strings comprising an outer string part (1) rotatably mounted outside a radially inner string part (2), and a rotation lock (3) positioned between them. The rotation lock (3...
12/28/2004
6834726Method and apparatus to reduce downhole surge pressure using hydrostatic valve
An apparatus for reducing pressure surges in a wellbore comprising a body having a bore therethrough, the bore providing a fluid path for wellbore fluid between a first and second end of the body, at least one fluid path permitting the wellbore fluid to pass between...
12/28/2004
6823936Fluid flow control apparatus
A first passageway (17) provides a first fluid flow path, in a well between a first zone (9) and a, common region (26). A second passageway (23), outside the first passageway (17), provides a second fluid flow path; between the sec...
11/30/2004
6820690Technique utilizing an insertion guide within a wellbore
A technique for facilitating the use of a variety of completion elements in a wellbore environment. The technique utilizes an insertion guide disposed within an open-hole section of a wellbore. The insertion guide may be radially expanded towards the surrounding for...
11/23/2004
6782952Hydraulic stepping valve actuated sliding sleeve
A downhole well valve having a variable area orifice (26) is flow area adjusted by a sliding sleeve (20) that is axially shifted along a tubular housing (12) interior in a finite number of increments. A hydraulic actuator (60) displaces a...
08/31/2004
6736213Method and system for controlling a downhole flow control device using derived feedback control
A system and methods for proportionally controlling hydraulically actuated downhole flow control devices using derived feedback control. The system comprises a downhole flow control device with a moveable element in a stationary housing. The moveable element is actu...
05/18/2004
6722439Multi-positioned sliding sleeve valve
A downhole choke in the form of a sliding sleeve valve operable in a plurality of positions including fully open, fully closed, and positions in between, is disclosed. It features a hydraulic control system that, in one embodiment, provides the motive force to move ...
04/20/2004
6715558Infinitely 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
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