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| Number | Title | Issue Date |
| 8009108 | Antenna apparatus for explosive environments Antenna assemblies for wireless communications in explosive environments are described. An example antenna assembly has a housing, a base member at one end of the housing, and an antenna extending through the base member and into the housing. A sealing compound with... | 08/30/2011 |
| 7917233 | Lead-lag filter arrangement for electro-pneumatic control loops A lead-lag input filter is connected ahead of a positioner feedback loop having one or more valve accessories, such as a volume booster or a QEV, to overcome slow dynamics experienced by the accessories when receiving low amplitude change control or set point signal... | 03/29/2011 |
| 7911189 | Input regulated DC to DC converter for power scavenging A method of scavenging power in a circuit having a power source generating electric current includes connecting a power scavenging device having an input terminal pair and an output terminal pair to the circuit via the input terminal pair, dynamically regulating a v... | 03/22/2011 |
| 7896028 | Flow restricted seat ring for pressure regulators A control device includes a valve body, a seat ring, and an actuator. The valve body defines a flow-path for a fluid. The seat ring is disposed within the flow-path. The actuator is coupled to the valve body and includes a control member. The control member is adapt... | 03/01/2011 |
| 7845268 | Asymmetric volume booster arrangement for valve actuators An asymmetric volume booster assembly includes an actuator movable in a first direction and a second direction, a first booster in fluid communication with the actuator, and a second booster in fluid communication with the actuator. The first booster includes a firs... | 12/07/2010 |
| 7874542 | Actuator levers, collets, and collet removers Actuator levers, collets and collet tools for use in process control devices are disclosed. An example apparatus includes an actuator lever, a collet coupled to the actuator lever, and a collet tool. In the example apparatus, the collet tool is removably coupled to ... | 01/25/2011 |
| 7866441 | Noise level reduction of sparger assemblies A method results in a system configuration wherein positioning a plurality of spargers reduces noise levels caused by fluid passing through the plurality of spargers. The method includes providing the plurality of spargers, each sparger having a center line access a... | 01/11/2011 |
| 7854239 | High temperature valve A trim assembly for a control valve includes a seal for sealing a leak path, where the seal is provided to perform advantageously in high-temperature applications, e.g., applications including temperatures of at least 450° F. (232.22° C.). The control valve compri... | 12/21/2010 |
| 7852610 | Flameproof apparatus using non-grounded energy-limiting barrier A device intended to meet flameproof approval requirements is configured to have two compartments separated by an energy-limiting barrier. The first compartment of the device houses the wiring terminations that bear ignition-capable energy and, therefore, must be fl... | 12/14/2010 |
| 7578314 | Seal assembly for a fluid pressure control device A seal assembly for a fluid pressure control device includes a guide element having a scaling surface and a first guide surface. A throttling element assembly includes a throttling element positionable within a fluid flow path, the assembly defines a mating surface ... | 08/25/2009 |
| 7484710 | Fluid flow control valve with high temperature bi-directional shutoff A control valve of the ball type with bi-directional shutoff capabilities is disclosed. The ball valve including an inlet and an outlet, a ball element and a seal assembly. When closing the valve, the ball element, which is eccentrically mounted on a shaft, rotates ... | 02/03/2009 |
| 7478647 | Tank manifold assembly A tank manifold assembly for use in combination with fuel tanks of Hydrogen fuel cell-powered vehicles. The manifold assembly incorporates a regulator, an excess flow valve, a manual shutoff valve, and ports to receive separate components. The separate components ma... | 01/20/2009 |
| 7478012 | Computerized evaluation of valve signature graphs The claimed method and system may measure or receive signature data from a process control device, such as a valve, and analyze the data against user configurable boundaries and settings to determine if there is a problem with the operation of the control device. On... | 01/13/2009 |
| 7472716 | Valve packing removal device A valve having a valve packing removal device attached thereto is disclosed. The valve may include a valve plug reciprocally disposed within the valve housing and connected to a sliding stem. The packing may be provided about the valve stem to ensure or minimize lea... | 01/06/2009 |
| 7469708 | Universal fluid valve body Universal fluid valve body apparatus and articles of manufacture are disclosed. An example fluid control valve body includes opposing first and second openings and opposing third and fourth openings. Each of the third and fourth openings is disposed at a respective ... | 12/30/2008 |
| 7458310 | Asymmetric volume booster arrangement for valve actuator An asymmetric volume booster assembly includes an actuator movable in a first direction and a second direction, a first booster in fluid communication with the actuator, and a second booster in fluid communication with the actuator. The first booster includes a firs... | 12/02/2008 |
| 7448409 | Fluid flow control device having a throttling element seal A fluid flow control device includes a body defining an inlet, an outlet, and a fluid flow path extending from the inlet to the outlet. A valve seat ring is coupled to the body and defines an orifice through which the fluid flow path passes. A cage is also coupled t... | 11/11/2008 |
| 7416164 | Elliptical sealing surface for butterfly valve A reduced component wear valve is comprised of a valve body having a passage therethrough and a disc attached to a rotatable shafts. The disc is utilized with a seal forming a gap between the disc and the seal proximate to the rotational axis of the disc. When the d... | 08/26/2008 |
| 7410144 | Pivot and bearing assembly for a manual valve operator A pivot assembly provides an economical means for reducing the load on a manually operated hand jack by providing a pivot point on the body of a connecting rod which allows for an additional degree of movement. The pivot assembly may include a thrust bearing to furt... | 08/12/2008 |
| 7387292 | Apparatus to connect a stem to a valve member Apparatus to connect a stem to a valve member and, more particularly, apparatus to connect a threaded stem to a valve member of a control valve are disclosed. An example apparatus includes the threaded stem received in a threaded opening of the valve member and a pl... | 06/17/2008 |
| 7380768 | Balanced-plug cage style control valve and bonnet seal assembly A balance-plug cage style control valve has substantially reduced body-bonnet bolt loading with an elastic seal. The elastic seal assembly includes an annular seal having an elastic region, a compression surface, and at least one sealing surface positioned in a chan... | 06/03/2008 |
| 7373951 | Control valve having “C” seal A control valve having a shiftable valve plug includes a valve body having an inlet, an outlet, a flow passage extending between the inlet and the outlet, and defining a longitudinal axis, a generally cylindrical valve cage disposed within the valve body and sized t... | 05/20/2008 |
| 7349745 | Lead-lag input filter arrangement with adjustable initial conditions for electro-pneumatic control loops Systems and methods for urging a valve plug off a seat of a control valve and toward a set point in the absence of significant delay. Adjustable, user-selected input parameters to the input of a lead-lag filter in communication with the input of a control loop facil... | 03/25/2008 |
| 7337041 | Feedback control methods and apparatus for electro-pneumatic control systems Methods and apparatus related to feedback control for electro-pneumatic control systems are disclosed. An example electro-pneumatic control system comprises an electro-pneumatic controller and a secondary pneumatic power stage coupled to the electro-pneumatic contro... | 02/26/2008 |
| 7320340 | Fluid pressure reduction devices Fluid pressure reduction devices for use in gas and liquid handling systems are disclosed. An example fluid pressure reduction device includes a plurality of cylinders, each having an inner diameter surface and an outer diameter surface and a plurality of apertures ... | 01/22/2008 |
| 7318447 | Pressure loaded pilot system and method for a regulator without atmospheric bleed A pressure loaded pilot valve system and method for a regulator valve is provided. The system includes a regulator valve connecting an inlet line to an outlet line, a servo control valve assembly, and a pilot valve assembly. A supply line is connected to the servo c... | 01/15/2008 |
| 7303179 | Split packing follower for use with valves Split packing followers for use with valves are disclosed. A disclosed packing follower includes a first member having a first portion of a flange and a first portion of a curved wall extending substantially perpendiculary from the first portion of the flange to def... | 12/04/2007 |
| 7296585 | Elliptical sealing surface for butterfly valve A reduced component wear valve is comprised of a valve body having a passage therethrough and a disc attached to a rotatable shaft. The disc is utilized with a seal forming a gap between the disc and the seal proximate to the rotational axis of the disc. When the di... | 11/20/2007 |
| 7243901 | Rotary valve apparatus and associated methods A rotary valve is provided with an elliptical valve disc that seats against a seal element operatively mounted in an elliptically shaped depression formed in the rigid annular portion of a seal cartridge structure carried by the valve body. Due to the elliptical sha... | 07/17/2007 |
| 7222016 | System and method for transfer of feedback control for a process control device Disclosed herein is a controller and method useful for transferring control of a process control device between first and second control modes. The controller includes first and second servo control modules that generate first and second drive signals based on feedb... | 05/22/2007 |
| 7219691 | Control valve positioner mounting system A positioner for a control valve assembly is disclosed wherein the positioner is mounted internally to thus protect the positioner from damage stemming from environmental, impact, or other outside influences. Accordingly, not only can the position of the valve be ac... | 05/22/2007 |
| 7201360 | Pneumatic device having a selectively variable orifice A pneumatic device having a selectively variable pneumatic output comprises an inlet connectable to an air source and an outlet disposed in a flow path, a control assembly in the flow path and having a plurality of differently sized primary orifi. The control assemb... | 04/10/2007 |
| 7197407 | Fuel tank level monitoring system and method A method and system for monitoring a level of liquid fuel in a tank having a known capacity, wherein the tank fluidly communicates with a fuel supply line through which the fuel is delivered in gaseous form. The method comprises measuring a flow rate of gaseous fuel... | 03/27/2007 |
| 7190159 | Integral hall effect limit switch for control valve stem position sensor A non-contacting position sensor having primary and secondary sensors detects relative displacement between two objects. The secondary sensor may function as a limit switch detection element in a limit switch circuit, and is positioned to be in the path of magnetic ... | 03/13/2007 |
| 7185672 | Valve travel indicator A valve travel indicator is described. An indicator portion indicates a location on a valve indicator scale. A retaining portion is fixedly coupled to the indicator portion and movably coupled to a valve stem. The retaining portion fixedly couples the indicator port... | 03/06/2007 |
| 7185736 | Aerodynamic noise abatement device and method for air-cooled condensing systems The noise abatement device and method described herein makes known an apparatus and method for reducing the aerodynamic resistance presented by a fluid pressure reduction device in a large duct. More specifically, a noise abatement device is disclosed having at leas... | 03/06/2007 |
| 7178785 | Stem arrangement for pivot actuated sleeve valve A valve assembly has a valve body and a fluid passage through the valve body with an inlet end and an outlet end. A valve seat is defined within the fluid passage. A sleeve is axially slidable within the fluid passage and has an upstream end, a downstream end, and a... | 02/20/2007 |
| 7069948 | Valve travel indicator A valve travel indicator is described. An indicator portion indicates a location on a valve indicator scale. A retaining portion is fixedly coupled to the indicator portion and movably coupled to a valve stem. The retaining portion fixedly couples the indicator port... | 07/04/2006 |
| 7064671 | Low power regulator system and method Methods are disclosed for collecting sensor data in a pressure regulator system including a controller and a plurality of sensors. The controller and each of the individual sensors are activated as required to collect sensor data during a sampling period thereby red... | 06/20/2006 |
| 7059585 | Fluid valve control members having contoured sealing surfaces Fluid valve control members having contoured sealing surfaces and methods of making the same are disclosed. An example fluid valve control member includes a body portion having a sealing surface configured to engage a sealing ring within a fluid control valve. A fir... | 06/13/2006 |
