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Class 137/807 - Utilizing particular fluid


Subclass of Class 137 - Fluid handling
Definition: Device or system involving the use therein of a specific
No. of patents: 84
Last issue date: 08/23/2011


1      
NumberTitleIssue Date
8003062Microchannel for separating blood plasma
A microchannel has a substrate body; a separation channel which is formed within the substrate; at least two (first and second) connection ports which are formed at one end of the separation channel close to the thickness direction perpendicular to the longitudinal ...
08/23/2011
7412990Microfluidic control device and method for controlling microfluid
Provided is a microfluidic control device and method for controlling the microfluid, and a fine amount of fluid is controlled even with natural fluid flow and solution injection, wherein a pressure barrier of a capillary is removed by a surface tension change result...
08/19/2008
7300260Special 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
7293423Method and apparatus for controlling freezing nucleation and propagation
An apparatus and method of controlling freezing in a liquid system is disclosed. The apparatus includes a heat exchanger having a initial zone characterized by a surface area to volume ratio. The apparatus also includes means for initiating freezing of a fluid from ...
11/13/2007
7278549Remedies to prevent cracking in a liquid system
A liquid cooling system utilizing minimal size and volume enclosures, air pockets, compressible objects, and flexible objects is provided to protect against expansion of water-based solutions when frozen. In such a system, pipes, pumps, and heat exchangers are desig...
10/09/2007
7249604Medical devices for occlusion of blood flow
The present invention discloses a method for the occlusion of blood vessels or fluid vessels to stop the flow of blood or fluid during elective or emergency surgical procedures or following traumatic injury. This invention also encompasses a medical device or tool f...
07/31/2007
7216660Method and device for controlling liquid flow on the surface of a microfluidic chip
The invention is directed to a method and device for routing, mixing, or reacting droplets or liquid microstreams along the surface of a flat substrate. The flow of liquid microstreams or microdroplets along designated pathways is confined by chemical surface patter...
05/15/2007
7216671Microfabricated elastomeric valve and pump systems
A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the fir...
05/15/2007
7204263Flow control method for micro system
A method of simply controlling the flow of fluid in a micro system without using a complicated value structure, comprising the steps of adding the substance transformed from sol-gel by stimulation to the fluid flowing through the micro flow passage of the micro syst...
04/17/2007
7204581Magnetic actuator using ferrofluid slug
A magnetostatic actuator uses a ferrofluid slug confined in a cylindrical tube which is wrapped in a conducting coil. By applying a current to the coil, a magnetic field is generated inside the coil. The ferrofluid slug may be attracted to the interior of the coil b...
04/17/2007
7201012Remedies to prevent cracking in a liquid system
A liquid cooling system utilizing minimal size and volume enclosures, air pockets, compressible objects, and flexible objects is provided to protect against expansion of water-based solutions when frozen. In such a system, pipes, pumps, and heat exchangers are desig...
04/10/2007
7201214Remedies to prevent cracking in a liquid system
A liquid cooling system utilizing minimal size and volume enclosures, air pockets, compressible objects, and flexible objects is provided to protect against expansion of water-based solutions when frozen. In such a system, pipes, pumps, and heat exchangers are desig...
04/10/2007
7159618Electrically opened micro fluid valve
The invention relates to an electrically-opened micro fluid-valve. The inventive valve comprises: at least one planar support (12); at least one afferent microchannel (14); at least one efferent microchannel (16), said microchannels being arrang...
01/09/2007
7156117Method of controlling the movement of fluid through a microfluidic circuit using an array of triggerable passive valves
The present invention is directed to methods of controlling the flow of fluids through a microfluidic circuit and, more particularly, to methods of controlling the movement of fluid through a microfluidic circuit using one or more triggerable passive valves. In one ...
01/02/2007
7137412Relay
A relay long in service life aiming at higher reliability and lower cost is achieved by use of a technology of microelectromechanical•systems. The relay comprises a flow path having narrow chokes and wide chokes, formed by bonding two insulating members together, ...
11/21/2006
7077152Microfluidic metering systems and methods
Systems and methods for metering microfluidic volumes are provided. A discrete plug may be separated from a larger volume of first fluid by injecting a second fluid, such as a gas, into a channel containing the first fluid. The injection of the second fluid to isola...
07/18/2006
7069943Microfluidic system including a bubble valve for regulating fluid flow through a microchannel
A microfluidic system includes a bubble valve for regulating fluid flow through a microchannel. The bubble valve includes a fluid meniscus interfacing the microchannel interior and an actuator for deflecting the membrane into the microchannel interior to regulate fl...
07/04/2006
7070027Magneto-rheological damper
A magneto-rheological (MR) damper including a piston guided in a cylinder that is filled with a magneto-rheological fluid, its work volume being formed oblique relative to the piston axis between the piston and the cylinder. ...
07/04/2006
7059351Surface-tension-guided liquid transportation device
A liquid transportation device includes a working board, a working liquid, a liquid channel and a cover board, wherein the liquid channel is formed on a top surface of the working board, the covering board is fully covered the liquid channel, the liquid channel comp...
06/13/2006
7044435System for influencing the rheological properties of a transportable material
A system for influencing the rheological properties of a transportable material, especially a free-flowing, pasty or bulk product is associated, or can be associated, with a machine for processing or treating the transportable material in which the transportable mat...
05/16/2006
7032607Capillary reactor distribution device and method
A capillary reactor distribution device comprising first and second capillary pathways (2, 3) which meet at a junction (5) and a third capillary pathway (4) which leads away from the junction (5), the capillary pathways (2, 3, 4) b...
04/25/2006
7032471Control device for controlling machines by hand or foot
The invention relates to a control device for controlling machines, especially hydraulic machines, by hand or foot. The inventive device comprises an actuating element (1), especially a pedal or a control lever, which can be moved in several directions. The a...
04/25/2006
7021435Monotube strut with rebound cut-off feature
A suspension damper including a tube and a damping piston assembly disposed within the tube and slidably mounted therein for reciprocal movement in the tube. The suspension damper also includes a piston rod extending through the tube and connected to the damping pis...
04/04/2006
7007972Method and airbag inflation apparatus employing magnetic fluid
An airbag inflation apparatus includes a chamber for generating a gas to inflate an airbag. A valve, including a magnetic fluid and a source of magnetic field, preferably an electromagnet, is associated with the chamber for regulating the flow of the gas into the ai...
03/07/2006
7007710Microfluidic devices and methods
Microfluidic devices provide substances to a mass spectrometer. The microfluidic devices include first and second surfaces, at least one microchannel formed by the surfaces, and an outlet at an edge of the surfaces which is recessed back from an adjacent portion of ...
03/07/2006
7001294Method of using a motion sensor with a bicycle sprocket assembly
A method for shifting a bicycle transmission that includes a derailleur for shifting a chain among a plurality of sprockets. The transmission includes at least a first sprocket and a second sprocket, wherein at least one of the first sprocket and the second sprocket...
02/21/2006
6999221Bimorphic polymeric photomechanical actuator
A bimorphic polymeric photomechanical actuator, in one embodiment using polyvinylidene fluoride (PVDF) as a photosensitive body, transmitting light over fiber optic cables, and controlling the shape and pulse duration of the light pulse to control movement of the ac...
02/14/2006
6955589Delivery system for magnetorheological fluid
A magnetorheological fluid delivery system includes a mixing and tempering vessel. Fluid is admitted to the vessel via a plurality of tangential ports, creating a mixing of the fluid in the vessel and promoting homogeneity. Fluid may be reconstituted in the vessel b...
10/18/2005
6932580Electrohydrodynamic conduction pump
An electrohydrodynamic (EHD) conduction pump is provided for pumping dielectric liquids, and a particular adaptation for mass transport of isothermal and non-isothermal single phase liquids. The EHD conduction pump does not require direct injection of electric charg...
08/23/2005
6926089Downhole actuation system utilizing electroactive fluids
Downhole wellbore tools are actuated by electrically controllable fluids energized by a magnetic field, for example. When energized, the viscosity state of the fluid may be increased by a degree depending on the fluid formulation. Reduction of the controllable fluid...
08/09/2005
6910699Magnetorheological fluid brake and force-feedback system for a steering mechanism
A magnetorheological fluid brake utilizing a positive displacement fluid pump adapted to pump a magnetorheological fluid through a viscosity regulator. The viscosity regulator is adapted to controllably vary the viscosity of the magnetorheological fluid, altering th...
06/28/2005
6899137Microfabricated elastomeric valve and pump systems
A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the fir...
05/31/2005
6895983Method and apparatus for dividing the flow of a gas stream
An apparatus for dividing the flow of a gas stream and a method for controlling the flow division of a gas stream are disclosed, the apparatus including an inlet conduit for receiving the gas stream, outlet conduits in fluid communication with the inlet conduit for ...
05/24/2005
6886576Method of controlling the flow in a flow system
A method and flow system for controlling the flow of a liquid in a flow system, the liquid flow comprising particles and being led into a channel thereof. The method comprises the steps of enveloping the liquid flow by a flow of carrier liquid, hydrodynamically focu...
05/03/2005
6880576Microfluidic devices for methods development
Microfluidic devices with multiple fluid process regions for subjecting similar samples to different process conditions in parallel are provided. One or more common fluid inputs may be provided to minimize the number of external fluid supply components. Solid materi...
04/19/2005
6877528Microfluidic system including a bubble valve for regulating fluid flow through a microchannel
A microfluidic system includes a bubble valve for regulating fluid flow through a microchannel. The bubble valve includes a fluid meniscus interfacing the microchannel interior and an actuator for deflecting the membrane into the microchannel interior to regulate fl...
04/12/2005
6843272Conductance valve and pressure-to-conductance transducer method and apparatus
A device for interrupting or throttling undesired ionic transport through a fluid network is disclosed. The device acts as a fluid valve by reversibly generating a fixed “bubble” in the conducting solvent solution carried by the network. The device comprises a p...
01/18/2005
6725882Configurable micro flowguide device
Disclosed is a micro flowguide device comprising: a micro channel comprising at least one bubble trap to retard bubbles positioned in said bubble trap; an electrolytic bubble generating device to generate bubbles in said fluid by an electrolytic reaction; and a pres...
04/27/2004
6679279Fluidic valve having a bi-phase valve element
A fluidic valve (125, 300, 500, 900, 1000, 1100, 1200, 1300) switches a state of flow of a fluid in a fluid communication channel of a fluid guiding structure (505). Heating a bi-phase valve element (515, 1065, 1215) causes a change a state of the bi-phas...
01/20/2004
6675821Method of controlling the flow in a flow system
With a method of controlling the flow in a flow system where a liquid flow contains a particle concentration, the liquid flow is surrounded by a carrier liquid. The liquid flow and carrier liquid are led into a central channel in which there is provided a...
01/13/2004
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