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| Number | Title | Issue Date |
| 8181666 | Switch valve A switch valve having a long span of life is provided. The switch valve 70 of the present invention has a low-melting-point metal 76 having a surface on which a blocking member contacts, with the low-melting-point metal 76 melted, thereby a clos... | 05/22/2012 |
| 7354363 | Magnetorheological fluid V-ribbed belt tensioner with through shaft A tensioner for a power transmitting belt is provided having a base, an arm pivotably attached to the base, a pulley rotatably attached to the arm and a spring operatively connected to the arm and the base for urging the arm in direction to tension the belt. A hydra... | 04/08/2008 |
| 7334630 | Closed-loop microchannel cooling system Apparatus and methods according to the present invention utilize micropumps that are capable of generating high pressure and flow without moving mechanical parts and the associated generation of unacceptable electrical and acoustic noise, as well as the associated r... | 02/26/2008 |
| 7329535 | Apparatus for circulating carrier fluid Provided are an apparatus for circulating a carrier fluid having two or more chambers or sections, an apparatus for amplifying a nucleic acid using the same, and a chip containing the same. The apparatus for circulating a carrier fluid includes two or more chambers ... | 02/12/2008 |
| 7323140 | Moving microdroplets in a microfluidic device The present invention relates to a system and method for moving samples, such as fluid, within a microfluidic system using a plurality of gas actuators for applying pressure at different locations within the microfluidic. The system includes a substrate which forms ... | 01/29/2008 |
| 7310965 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 12/25/2007 |
| 7302964 | Housing for a liquid seal vacuum and pressure relief valve apparatus A housing and a method of using a liquid for controlling vapor flow through a valve apparatus between a canister and atmospheric conditions. The housing includes a container and a first partition that projects from the housing into the liquid and divides the vapor c... | 12/04/2007 |
| 7300260 | Special fluids for use in a hydrostatic transmission A positive displacement piston unit is provided that utilizes a magnetorheological (MR) or electrorheological (ER) fluid as the transmission fluid. Each cylinder of the invention has an intake port connected to the suction port of the hydrostatic pump and an output ... | 11/27/2007 |
| 7270786 | Methods and systems for processing microfluidic samples of particle containing fluids The present invention relates to a microfluidic system for processing a cell-containing liquid. The system includes a microfabricated substrate having an enrichment channel to prepare an enriched cell sample from the cell-containing liquid. A flow through member is ... | 09/18/2007 |
| 7204264 | High pressure capillary micro-fluidic valve device and a method of fabricating same A freeze-thaw valve and a method of micro-machining the freeze-thaw valve is provided and includes a valve housing, wherein the valve housing defines a housing cavity and includes a housing inlet, a housing vent, a capillary tubing inlet and a capillary tubing outle... | 04/17/2007 |
| 7195036 | Thermal micro-valves for micro-integrated devices The movement and mixing of microdroplets through microchannels is described employing silicon-based microscale devices, comprising microdroplet transport channels, reaction regions, electrophoresis modules, and radiation detectors. The discrete droplets are differen... | 03/27/2007 |
| 7192557 | Methods and systems for releasing intracellular material from cells within microfluidic samples of fluids The present invention relates to a microfluidic system for processing a cell-containing liquid. The system includes a lysing zone to receive the cell-containing sample and a positioning element to position the cell-containing sample in a lysing position in the vicin... | 03/20/2007 |
| 7185697 | Electroosmotic microchannel cooling system Apparatus and methods according to the present invention preferably utilize electroosmotic pumps that are capable of generating high pressure and flow without moving mechanical parts and the associated generation of unacceptable electrical and acoustic noise, as wel... | 03/06/2007 |
| 7159412 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 01/09/2007 |
| 7077154 | Apparatus for controlling the pressure of gas by bubbling through a liquid, such as bubble CPAP Apparatus for effecting bubble CPAP. The apparatus includes a hollow vessel holding a liquid, a cap, and a positionable tube assembly. The positionable tube assembly comprises a guide tube and a positionable tube. The positionable tube is arranged to have a gas intr... | 07/18/2006 |
| 7073346 | Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 07/11/2006 |
| 6973938 | Liquid column pressure and vacuum vent A pressure and vacuum vent utilizing a column of liquid to open and close the vent at predetermined pressure and vacuum levels. A column of liquid is constrained in connection with internal and external passages coupled between a pair of expansion chambers. The exte... | 12/13/2005 |
| 6959723 | Oil sealant-preserving drain odor trap Improvements in retention of the oily liquid sealant (20) in a oil-sealed odor trap (10B-10M), for drain applications such as a waterless urinal or anti-evaporation floor drain, are accomplished by minimizing turbulence in the oil sealant, such ... | 11/01/2005 |
| 6942018 | Electroosmotic microchannel cooling system Apparatus and methods according to the present invention preferably utilize electroosmotic pumps that are capable of generating high pressure and flow without moving mechanical parts and the associated generation of unacceptable electrical and acoustic noise, as wel... | 09/13/2005 |
| 6823895 | Magnetorheological fluid device The disclosure describes a magnetorheological fluid control valve. The magnetorheological fluid control valve comprises an electromagnetic coil having a first end and a second end. A first arm is magnetically coupled to the first end of the electromagnetic coil. A s... | 11/30/2004 |
| 6718789 | Pipe freezer with defrost cycle A compact, inexpensive pipe freezer with defrost cycle for forming a frozen ice plug in a section of pipe to be repaired, and, after the repair operation has been completed, defrosting the pipe freezer's evaporator and freeze heads so that the pipe freezer can be re... | 04/13/2004 |
| 6653245 | Method for liquid phase deposition A method for liquid phase deposition, including the steps of providing at least two raw materials from at least two supply devices of a saturation reaction system into a mixture trough and stirring until saturation occurs, filtering out unnecessary solid-... | 11/25/2003 |
| 6575188 | Methods and systems for fluid control in microfluidic devices The present invention relates to a valve for use in a microfluidic system. The valve includes a substrate defining an upstream channel and a downstream channel joined by a passage, wherein the passage comprises a first opposed wall disposed at an angle to... | 06/10/2003 |
| 6568415 | Storing device for easily polymerizable and coagulating liquid substance and method for pressure control thereof A storing device is disclosed having a gas-sealing device and/or a heating device provided for a pipe connecting a storing tank for an easily polymerizable and/or coagulating liquid substance and a liquid sealing implement-protecting device. A method for ... | 05/27/2003 |
| 6557575 | Fluid flow control freeze/thaw valve for narrow bore capillaries or microfluidic devices Methods and devices for the management of fluid flow within nanoscale analytical systems, comprising a freeze thaw valve having differing geomentries to constrict a frozen plug within the freeze thaw segment. The freeze thaw valve is directed to use in hi... | 05/06/2003 |
| 6495374 | Fluid sampling device comprising a thermal control valve Fluid sampling device comprising a sampling cell (1) provided with a thermal control valve having a plug (21) made from a solid low-melting temperature material that is made permeable to the fluid by temporary heating. The device comprises an intermediate... | 12/17/2002 |
| 6450203 | Sealed microfluidic devices A method of controlling flow of a driven fluid in a channel, the channel being defined by an encircling wall, the method comprising the steps of sealing the channel with a sealing fluid immiscible in the driven fluid blocking the channel at an initial pos... | 09/17/2002 |
| 6415821 | Magnetically actuated fluid handling devices for microfluidic applications Magnetically actuated fluid handling devices using magnetic fluid to move one or more fluids (gases or liquids or both) through microsized flow channels are provided. Fluid handling devices include micropumps and microvalves. Magnetically actuated slugs o... | 07/09/2002 |
| 6408884 | Magnetically actuated fluid handling devices for microfluidic applications Magnetically actuated fluid handling devices using magnetic fluid to move one or more fluids (gases or liquids or both) through microsized flow channels are provided. Fluid handling devices include micropumps and microvalves. Magnetically actuated slugs o... | 06/25/2002 |
| 6321766 | Electromagnetic flow control valve for a liquid metal with built-in flow measurement An electromagnetic flow control valve for an electrically conductive liquid having a plurality of coils and yokes surrounding a non-metallic, such as alumina, tube through which an electrically conducting liquid, such as liquid metal, flows. Direct curren... | 11/27/2001 |
| 6302134 | Device and method for using centripetal acceleration to device fluid movement on a microfluidics system This invention provides methods and apparatus for performing microanalytic and microsynthetic analyses and procedures. Specifically, the invention provides a microsystem platform for use with a micromanipulation device to manipulate the platform by rotati... | 10/16/2001 |
| 6199577 | Pressure relief system for chemical storage tanks A system for regulating pressure in a sealed chemical storage tank. The system includes a vent passage connected to the tank, through which gas may pass into and out of the tank. The vent passage includes a first enclosed region having a first volume and ... | 03/13/2001 |
| 6186176 | System and method for controlling the flow of a gaseous medium through a fluid A method and system for controlling the flow of a gaseous medium through a fluid are described. The method includes providing a rheologic fluid through which a gaseous medium can be conducted, and controlling the viscosity of the rheologic fluid to contro... | 02/13/2001 |
| 6049031 | Magnetic valve system for a musical instrument A magnetic valve uses neodymium magnets to maintain itself in a state, either closed or open. Upon applying electrical signals to a coil, the valve state is changed. In the open state fluid may readily flow through the valve, whereas the closed state uses... | 04/11/2000 |
| 6044858 | Electromagnetic flow control valve for a liquid metal An electromagnetic flow control valve for an electrically conductive liquid having a plurality of coils and yokes surrounding a non-metallic, such as alumina, tube through which an electrically conducting liquid, such as liquid metal, flows. Direct curren... | 04/04/2000 |
| 6044866 | Gas flow valve A gas flow valve comprises at least one gas inlet, at least one gas outlet, a flow path between said gas inlet and said gas outlet, a magnetic fluid in the valve arranged in the flow path and means for application of a magnetic field to the magnetic fluid... | 04/04/2000 |
| 5988197 | Freeze valve and treatment enclosure controlled by at least one such valve A freeze valve for a substantially single-phase fluid contains a pipe designed to receive fluid in a flow area, a cold source and a heat source. The cold source and the heat source are placed in thermal contact with the pipe. The pipe is positioned in rel... | 11/23/1999 |
| 5752539 | Two flow control means using partially solidified plug Filtering apparatus includes two or more passages (2) acting in parallel, each having an extended filter (12) which passes through inlet and outlet ports (48, 49), flowable preferably sealed by solidified plugs of the flowable substance such as a polymer ... | 05/19/1998 |
| 5632305 | Apparatus for securing a pressure vessel against over pressure An apparatus for securing a pressure vessel against over pressure includes a shaped part connected to a pressure vessel and a valve assembly being disposed on the shaped part. The valve assembly includes a housing block, at least one safety valve having a... | 05/27/1997 |
| 5548965 | Multi-cavity evaporator An evaporator has an outer surface and inner chamber. The outer surface having at least two pipe receiving surfaces and a pair of ends. The evaporator has a bore extending from one of the ends to the inner chamber. A tube extends into the bore sealing the... | 08/27/1996 |
