Class / Patent application number | Description | Number of patent applications / Date published |
251014000 | Fluid and non-fluid actuators | 24 |
20090078894 | APPARATUS AND METHODS FOR MANUAL OVERRIDE OPERATION OF A LINEAR ACTUATOR - Apparatus and methods for manual override operation of a linear actuator are described. An example apparatus includes a base to be mounted to an actuator. A drive member is operatively coupled to the base and selectively engagable to a stem of the actuator to enable manual operation of the actuator in a first direction and a second direction. | 03-26-2009 |
20090230335 | TEMPERATURE TRIGGERED ACTUATOR - An actuator is disclosed which operates on the principle of the variable magnetic properties of materials with respect to temperature. As temperature is raised past Curie temperature, magnetic permeability of certain materials drops significantly to a value close to free space permeability. However, depending on the material selection, magnetic permeability may be significantly higher below Curie temperature. This principle is used to cause magnetic attractive force to move an actuator at one temperature, while permitting a return spring force to move the actuator at another temperature by changing the pathway traversed by most magnetic lines of flux from a magnetic source. The actuator may be employed to provide a temperature activated electrical switch or fluid valve. The temperature activated valves are suited to use in high temperature environments, such as SAGD wells. | 09-17-2009 |
20090230336 | Liquid flow controller and precision dispense apparatus and system - Apparatus and a control system for monitoring (preferably digitally) and/or controlling pressure to a pneumatic load such as a proportional fluid control valve and using a measurement input from a fluid measurement device that responds to a flow rate, the liquid measurement input being used to control the pressure to the pneumatic load so that pneumatic load may be increased or decreased (to proportionally open or close the pneumatic valve) to change the flow rate of the fluid to a desired rate. The pneumatic load can also be adjusted (to proportionally open or close the pneumatic valve) to accommodate changes in temperature and viscosity of a fluid. | 09-17-2009 |
20090256088 | Freeze-resistant metering valve - A freeze-resistant metering valve is provided that comprises a magnetic part and a hydraulic part. The magnetic part has an armature biased by a spring. The hydraulic part has an annular space for receiving and conveying a liquid as well as a tappet facing a valve seat. The valve seat comprises a nozzle opening on the side facing away from the tappet. In a currentless state, the tappet blocks the annular space in the direction of an opening (nozzle opening) until a freezing pressure exerted onto the armature generates a sufficient force by virtue of the solidifying liquid. This force is used to counteract the spring force until a freeze expansion space is created by way of a relieving motion. | 10-15-2009 |
20090309050 | ELECTROPNEUMATIC VALVE - An electropneumatic valve is disclosed for driving a pneumatic actuator drive to activate fittings in automation systems. The valve can have at least one electropneumatic transducer and a pneumatic booster, which has at least one valve device for optionally connecting a connecting duct, which can be connected to the actuator drive, to at least one of an air inflow duct and an air outflow duct. The at least one valve device can be activated as a function of an electrical actuation signal by the electropneumatic transducer. According to an exemplary configuration, at least one flow sensor whose output signal is fed back to the electrical actuation signal can be arranged in the conducting duct which is connected to the actuator drive. | 12-17-2009 |
20100148097 | LIQUID FLOW CONTROL DEVICE - A liquid flow control device has a port or passageway through which liquid flow is to be controlled. A body of a liquid swellable material is located in the port or passageway having an upstream side and a downstream side in relation to the direction of liquid flow through the port or passageway. A layer of sealing material is provided on the upstream side of the body to prevent contact of that side of the body with the liquid when the body is swollen to close the port or passageway whilst allowing contact of the downstream side of the body when the body is in the non-swollen condition allowing liquid flow through the port or passageway. | 06-17-2010 |
20100187451 | PRESSURE REGULATING VALVE FOR AIRCRAFT ENGINE - The fluid pressure regulating valve is for use in an aircraft engine. The valve has at least a first fluid inlet, a first fluid outlet and a second fluid outlet. The valve comprises: a valve housing having a first valve spool interior cavity; a first fluid path within the valve housing from the fluid inlet to the first fluid outlet; a second fluid path within the valve housing from the fluid inlet to the second fluid outlet; a first valve spool mounted for reciprocal motion within the first valve spool cavity between a first position and a second position, the first valve spool having a second valve spool interior cavity and being spring-biased to its first position; and a second valve spool mounted for reciprocal motion within the second valve spool cavity between a first position and a second position, the second valve spool being spring-biased to its first position, the second valve spool closing the first fluid path at its second position when the first valve spool is substantially at its first position. | 07-29-2010 |
20100193715 | MANUAL OVERRIDE APPARATUS FOR LINEAR ACTUATORS - Apparatus for manual override operation of a linear actuator are described. An example manual override apparatus includes a manual operator having a first coupling on a first side and a second coupling on a second side opposite the first side. A first drive member having external threads is coupled to a housing of an actuator. The first drive member includes a first end to removably receive the first coupling of the manual operator, a second end to selectively engage an actuation member of the actuator, and a bore therethrough along a longitudinal axis of the first drive member. A second drive member disposed in the bore to be rotatably coupled to the first drive member. The second drive member has a first end threadably coupled to an actuator stem of the actuation member and a second end to removably receive the second coupling of the manual operator. Rotation of the first drive member in a first rotational direction via the manual operator moves the actuation member of the actuator in a first linear direction and rotation of the second drive member relative to the first drive member in the first rotational direction via the manual operator causes the actuation member to move in a second linear direction opposite the first linear direction. | 08-05-2010 |
20100224803 | Valve Body Fluid Rerouting System - There is provided a fluid rerouting system for valve bodies that use hydraulic pressure, via a balance pressure line, to move spools. In an exemplary embodiment, the system comprises a valve sleeve having a plurality of ports that are substantially aligned with a plurality of fluid connections in the mating bore, except that no valve sleeve port aligns with the balance pressure line. The system also includes a spool having a plurality of lands that are sized and configured to fit slidably in said valve sleeve. The combination of the valve sleeve and at least one of the lands form a chamber, fluid access to which is via an aperture traversing the land. Means for blocking the access of said balance pressure line to said valve sleeve are also included. | 09-09-2010 |
20110198519 | PNEUMATIC PRESSURE REGULATING VALVE - A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in the differential pressure causes an adjustment of the control diaphragm and the latter itself or a closing element actuated by it changes the opening through an outflow cross-section, and wherein a structure that is arranged adjacent to the outflow cross-section on the diaphragm side forms a stop for the control diaphragm or for the closing element in the closed position of said control diaphragm. At least one preliminary stop is arranged in the pressure regulating valve such that, when the control diaphragm is moving in its closing direction, the control diaphragm or the closing element first comes into contact with the preliminary stop and that, when the control diaphragm is moving further in its closing direction, the control diaphragm or the closing element will then, while being subjected to elastic and flexible deformation or being further subjected to elastic and flexible deformation respectively, further reduces the opening and, in a final position, also comes into contact with the stop. | 08-18-2011 |
20110204267 | HYDRAULIC VALVE ARRANGEMENT - The invention concerns a hydraulic valve arrangement ( | 08-25-2011 |
20120068094 | Apparatus and Method for Remotely Operating Manual Valves - An apparatus for remotely operating a manual valve is disclosed that includes a control unit, a valve actuator, a lock assembly, and a load cell. In some aspects, the apparatus may also include a stand such as a tripod. In another aspect, the apparatus may be portable and sometimes mounted on a vehicle or other form of transport. | 03-22-2012 |
20120161043 | COMBINATION MANUAL/PNEUMATIC SHUT-OFF VALVE - A method of preventing a mass flow controller from participating in crosstalk in an array of mass flow controllers is described. The method includes sensing and providing a signal indicative of a fluid pressure inside of a mass flow controller with a pressure sensor contained within the mass flow controller, determining a response of a control valve to a rapid pressure perturbation at the inlet of the mass flow controller using the signal indicative of the fluid pressure to avoid overcompensation for the rapid pressure perturbation, and adjusting a control valve contained within the mass flow controller downstream of the pressure sensor, based on the determined response, so that the mass flow controller avoids overcompensating for the rapid pressure perturbation. The pressure sensor is positioned such that the pressure sensor is sensitive to rapid pressure perturbations at the inlet of the mass flow controller. | 06-28-2012 |
20120228530 | BYPASS ARRANGEMENT FOR VALVE ACTUATOR - A bypass arrangement in accordance with an embodiment of the invention includes an actuator movable in a first direction and a second direction, a volume booster in fluid communication with the actuator, the volume booster having a supply passage, an exhaust passage, and a volume booster output bypass connection in fluid communication with the supply passage, and a bypass valve in fluid communication with the volume booster output bypass connection. | 09-13-2012 |
20120292540 | VALVE DEVICE - The invention relates to a valve device comprising a valve housing ( | 11-22-2012 |
20120313018 | CONTROL VALVE ASSEMBLY - A control valve assembly ( | 12-13-2012 |
20130168580 | FAIL-SAFE APPARATUS FOR USE WITH FLUID VALVES - Fail-safe apparatus for use with fluid valves are disclosed herein. An example fail-safe apparatus includes a first piston, a second piston movably coupled relative to the first piston, and a fluid chamber between the first and second pistons to receive a control fluid. The control fluid is to operatively couple the first and second pistons when the control fluid is provided in the fluid chamber. The first piston is operatively decoupled from the second piston when at least some of the control fluid is removed from the fluid chamber. | 07-04-2013 |
20130221253 | SERVO VALVE - The invention relates to a servo valve, in particular a two-stage or multistage electrohydraulic servo valve, having a first stage which works as a pilot stage, and a second stage which works as a power stage, wherein the second stage has a valve block and a control slide valve sleeve arranged therein and having a jacket surface ( | 08-29-2013 |
20150069275 | Hybrid Manual and Hydraulic Actuator Override - An apparatus for overriding a valve actuator to move a valve stem to a second position includes an override body with a central axis. A piston is located within the override body. A bushing is non-rotatably carried within the override body. An override shaft is in threaded engagement with the bushing and extends through a sealed orifice in the override body. Fluid pressure applied to the piston causes the bushing to engage the valve actuator and push the valve stem, and alternatively, rotation applied to the override shaft causes the bushing to move linearly to engage the valve actuator and push the valve stem. | 03-12-2015 |
20150337977 | DEVICE TO PROVIDE FAILSAFE MECHANISM ON A VALVE ACTUATOR ASSEMBLY - Embodiments of a safety device that provides a failsafe mechanism on valve actuator assemblies. This failsafe mechanism operates in the event of power loss, or other problems and/or failures, that prevent operation of the drive components. In one embodiment, the safety device is configured to couple the drive components with the valve stem. During normal operation, this configuration changes the position of the valve stem in response to motive action of the drive components. In the event of power loss, the safety device is configured to operate independent of the drive components to change the position of the valve stem and, thus, move the valve to a closed or “safe” position. | 11-26-2015 |
20150369370 | FLUID CONTROLLER - A fluid controller includes an automatic opening-and-closing device configured to move a valve rod upward and downward, and a manual opening-and-closing device configured to move the valve rod upward and downward by a manual operation. The manual opening-and-closing device includes a cylindrical handle supported by a casing so as to be rotatable and not to move upward and downward, and a cylindrical operating member screwed into a female screw of the handle and configured to move upward and downward with a rotation of the handle. The operating member is apart from a piston of the automatic opening-and-closing device in a vertical direction in an automatic operation. The piston is moved by the operating member which moves upward in association with the rotating operation of the handle in a manual operation in an opposite direction from the opening state brought by the automatic opening-and-closing device. | 12-24-2015 |
20150376875 | AUTOMATIC VALVE SHUTOFF DEVICE AND METHODS - Examples of automatic valve shutoff systems are described which may include an actuation device including an actuator and a valve attachment portion. The valve attachment portion may be configured for attachment with an existing valve the in a fluid or compressible gas supply line. The system may further include a controller coupled to the actuation device, wherein the controller is configured to initiate a valve shutoff process in response to a wireless signal. Wake-up circuitry may be coupled to the controller and configured to monitor the supply line for vibrations and activate the controller in response to the vibrations. | 12-31-2015 |
20160069515 | EMERGENCY DISPOSAL OF STORAGE CONTAINERS - A device for the emergency evacuation of a storage tank, in particular a storage tank used to store combustible media, such as hydrogen. The storage tank is connected with a chimney by way of a relief line, and the relief line exhibits at least one pneumatically actuated relief valve, wherein the latter is pneumatically held in the closed position and opened by a spring force while relieving the pneumatic control line, or held in the closed position by a spring force and pneumatically opened. | 03-10-2016 |
20160138721 | LEAK-FREE RISING STEM VALVE WITH BALL SCREW ACTUATOR - A rising stem valve with a magnetic actuator having an outer and as inner magnet assembly that are magnetically coupled to each other so that the inner and outer magnet assemblies rotate together aid a ball screw that is connected to the rising stem valve and that converts rotary to reciprocal motion. The inner magnetic cartridge assembly and valve body comprise a sealed lower section that is completely sealed to the outside environment. | 05-19-2016 |