Class / Patent application number | Description | Number of patent applications / Date published |
251335100 | HERMETIC FLEXIBLE WALL SEAL FOR ACTUATOR | 15 |
20080230734 | ON-OFF VALVE AND PROCESS APPARATUS EMPLOYING THE ON-OFF VALVE - A disclosed on-off valve includes a valve body having two openings that may place a process chamber and an evacuation apparatus in pressure communication with each other; a closure element located inside the valve body and adapted to close one of the two openings; a seal member provided in the closure element and adapted to seal the one of the two openings when the closure element closes the one of the two openings; a linear motion driver that linearly moves the closure element; a retreat portion located away from the two openings; and a pivotal motion driver adapted to pivot the closure element between a first position corresponding to the one of the two openings and a second position corresponding to the retreat portion; wherein the closure element is moved to the retreat portion by the linear motion driver and the pivotal motion driver in order to stay at the retreat portion when the closure element is away from the one of the two openings. | 09-25-2008 |
20080277615 | ON CHIP DILUTION SYSTEM - An on-chip chemical compound dilution system for providing dilution of a chemical compound in a microfluidic application includes at least one sample well for providing a selected chemical compound to be diluted, a dilution well for providing a diluent for diluting the chemical compound, a network of channels for carrying the chemical compound and diluent, a first syringe pump for effecting dilution, a second syringe pump, a detector and a plurality of valves for selectively controlling the flow of liquid through the channels. The dilution system may be a multiple-stage dilution system for precisely mixing a plurality of chemical compounds in a diluent. The dilution system allows for accurate calibration to compensate for variations due to manufacturing, thereby providing precise dilution ratios. The dilution system further enables flushing to allow re-use of the system with another chemical compound. | 11-13-2008 |
20150060717 | VALVE PACKING SHIELD FOR USE IN HYDROCARBON OPERATIONS - A valve assembly includes a valve body defining a flow passage and a body cavity perpendicular to the flow passage. A bonnet is secured to the valve body. A valve member is moveable between an open position and a closed position, the valve member blocking the flow passage in the closed position, and allowing flow through the flow passage in the open position. A valve stem is coupled to the valve member. A debris barrier circumscribes the valve stem. The debris barrier comprises a first disk shaped member with a central opening through which the valve stem is inserted, and notches that extend radially from the central opening to define petals with ends that abut the valve stem. | 03-05-2015 |
251335200 | Diaphragm | 7 |
20090057599 | ELASTIC VALVE AND MICROFLUIDIC DEVICE INCLUDING THE SAME - An elastic valve and a microfluidic device including the same are provided. The elastic valve includes a channel dented by external pressure so as to be elastically restituted; and a plurality of channel closing protrusions, which comprise elastomer as a material, which are protruded from at least one inner side surface of the channel toward an opposite inner side surface, and which are separated from each other so as not to interrupt a flow of fluids, wherein, when external pressure is applied in order to dent the channel, the plurality of channel closing protrusions are deformed so as to be elastically restituted, thereby closing the channel. | 03-05-2009 |
20090057600 | Vacuum opening/closing valve - A durable vacuum opening/closing valve connectable with a vacuum chamber and a vacuum pump is arranged to control vacuum pressure in the vacuum chamber by changing an opening degree of an O ring serving as a valve element relative to a valve seat. A predetermined clearance between an outer peripheral surface of a piston and an inner peripheral surface of a cylinder is sealed by a bellofram which changes its shape in association with movement of the piston moved to open or close the valve. The bellofram includes an inclined surface with a predetermined inclination angle and the outer periphery of the piston includes an inclined surface with a predetermined inclination angle, so that an inner diameter of the bellofram in contact with the piston and the outer diameter of the piston are equal when the valve element is in contact with the valve seat. | 03-05-2009 |
20110031427 | SEALING ARRANGEMENT FOR A DIAPHRAGM VALVE - A diaphragm valve is disclosed. The diaphragm valve includes a valve body including a housing defining a fluid flow passageway and a valve seat. A bonnet assembly including a housing is mounted to the valve body. A diaphragm, a backing cushion and a resilient member are positioned between the bonnet assembly and the valve body. The resilient member is sandwiched between the housing of the bonnet assembly and the backing cushion for urging the backing cushion toward the diaphragm, thereby urging the diaphragm against the valve body. | 02-10-2011 |
20120119130 | DIAPHRAGM VALVE WITH IMPROVED SEALING PERFORMANCE AND LEAK DETECTION - Diaphragm valve with internal leak detection and improved external leak sealing performance. In diaphragm valves comprising diaphragms that have shields and backings, a rigid seal plate interposed between the shield and backing prevents peripheral regions of the shield from cold-flowing into the backing, despite the compression forces produced by tightening the fasteners that secure the diaphragm to the valve's bonnet assembly and body. An access port passing through the seal plate provides an interface between a void located between the shield and the backing and a breach detector. The breach detector is configured to detect pressure, volume, moisture or mass deviations in fluid disposed in the void, and the deviations indicate whether there's a rupture in the shield or the backing. The breach detector can be connected to an alarming device or signaling system to provide warnings and alerts to valve operators, process control panels or data communication networks. | 05-17-2012 |
20140027661 | Aseptic or Sanitary Diaphragm Valve - An aseptic valve or sanitary valve employs a floating plug situated within a cylindrical valve housing. The floating valve plug has a head that seats against an inlet opening, and has a stem and a generally conic foot that rests upon a diaphragm formed of a flexible, food-grade membrane. An actuator below the diaphragm urges the plug up to lodge against the inlet opening, and relieves force on the membrane and plug to open the valve. Spacer arms radiate from the stem or head of the plug, to keep the plug centered in the housing. | 01-30-2014 |
20140054488 | DIAPHRAGM VALVE HAVING SPHERICALLY-SHAPED VALVE BODY AND DIAPHRAGM SEALING SURFACE - Apparatus, including a diaphragm valve, is provided featuring a valve body configured with at least one spherically-shaped valve body sealing surface and a diaphragm configured with at least one diaphragm sealing surface, and also configured to respond to an applied force and provide sealing contact between the at least one diaphragm sealing surface and the at least one spherically-shaped valve body sealing surface. The valve body is configured with a spherical weir having a spherical weir sealing surface configured with polish marks substantially perpendicular to a weir leak path. The valve body also has a circular rim having a spherically-shaped peripheral sealing surface configured with polish marks, many of which are substantially perpendicular to a shell leak path. | 02-27-2014 |
20160144537 | METHOD FOR SHAPING A PLATE MADE OF A SINTERED AND RESTRUCTURED POLYTETRAFLUOROETHYLENE AND APPLICATIONS THEREOF - The invention relates to a method for shaping a plate made of a sintered and restructured polytetrafluoroethylene and to the applications thereof. | 05-26-2016 |
251335300 | Bellows | 5 |
20090194727 | VALVE ACTUATOR ASSEMBLY - An actuator assembly for actuating a valve includes an extensible bellow having an open end and a closed end, a stem operable to contact the closed end and to actuate a stopper mechanism, and a driver configured to move the bellow. The movement of the bellow effects movement of the stem to actuate the valve. In one embodiment, the driver acts to compress the bellow, the compression causing movement of the stem to open the valve. The bellow may be hermetically sealed to the valve housing, thereby allowing a higher range of fluid pressures. | 08-06-2009 |
20090194728 | Wide-Body Pneumatic Valve having Internalized Valve Actuator - A Wide-body Valve Having an Internalized Actuator is disclosed. The preferred valve provides exceptional conductance while also providing a compact valve and actuator package. The valve incorporates a geometry wherein the internal diameter of the valve is approximately 180% of the diameter of the valve's port. Furthermore, the stroke of the valve is preferably 30% or more of port diameter. Also, the valve actuator housing is designed to cooperate with the valve body housing such that the actuator housing is encapsulated within the valve body housing such that the valve part count and valve part volume is reduced over conventional valves. | 08-06-2009 |
20120217429 | BELLOWS SEAL ASSEMBLY AND BELLOWS VALVE EQUIPPED THEREWITH - A bellows seal assembly and bellows valve equipped therewith. The bellows seal assembly includes an internal bellows, an external bellows, a hollow upper bellows seat, a first hollow lower bellows seat, and a second hollow lower bellows seat. One end of the internal bellows is fixed to the upper bellows seat and the other end is fixed to the second lower bellows seat. One end of the external bellows is fixed to the upper bellows seat and the other end is fixed to the first lower bellows seat. The external bellows is sheathed around the internal bellows. The first lower bellows seat is sheathed around the second lower bellows seat. The bellows valve includes the bellows seal assembly. | 08-30-2012 |
20140239216 | FILLING VALVE - The invention discloses a valve including a valve body with a valve inlet and a valve outlet. The valve body is joined to a bellows between the valve inlet and the valve outlet, the bellows having an annular side wall formed in a concertina formation with inner and outer corners wherein the side wall has a non-constant thickness along its length, the side wall being thicker at the outer corners and thinner at the inner corners. The bellows further has an annular mounting base for attachment to the valve body. The valve body has an annular flange from which extends an upstanding collar, wherein the mounting base is clamped between the valve body and the collar. The mounting base has a width being wider than a gap formed between the valve body and the collar so that the mounting base is compressed when clamped between the valve body and the collar. | 08-28-2014 |
20160044878 | VALVE - A valve for controlling fluid flow from an inlet of a pipe fitting to at least one outlet of the pipe fitting at an angle to the inlet. The pipe fitting includes an inner collapsible bellows fixed at a position opposite the inlet. The bellows has a support annulus at the other end adjacent the inlet, whereby, in a closed position, the bellows prevents fluid flow from the inlet to the at least one outlet as the fluid is trapped within the bellows. In an open position, the fluid can flow from the inlet to the at least one outlet when the bellows is collapsed. | 02-18-2016 |