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| Number | Title | Issue Date |
| 8038414 | Rinsing device and method for the operation thereof A rinsing device, in particular for endoscopy, comprising an electrically driven pump, in particular a peristaltic roller pump, as well as a method of operating such a device. A control device is provided to detect and/or adjust a flow rate. In order to avoid an exc... | 10/18/2011 |
| 7828528 | Occlusion sensing system for infusion pumps Some embodiments of an infusion pump system may include an occlusion sensor system that communicates with control circuitry to detect the presence of an occlusion. In some embodiments, the occlusion sensor system includes first components that are located within a d... | 11/09/2010 |
| 7437880 | Pump bypass control apparatus and apparatus and method for maintaining a predetermined flow-through rate of a fluid through a pump A bypass control apparatus is used with a pump pumping a fluid therethrough. A bypass flow line circulates fluid about the pump. A bypass valve is interposed in the bypass flow line and moves between an opened state to permit the fluid to circulate through the bypas... | 10/21/2008 |
| 7358635 | Magnetic power transmission devices for oilfield applications A method and apparatus relates to incorporating a magnetic coupling for use in oilfield applications. The magnetic coupling is operatively coupled to an oilfield machine to provide a controlled operational speed. The magnetic coupling may be operatively connected to... | 04/15/2008 |
| 7350399 | Leakage detecting device for evaporating fuel processing apparatus A leakage detecting device is connected to an evaporating fuel processing apparatus to detect leakage of evaporating fuel in a ventilation apparatus that includes an electric pump, a fuel tank, and a filter. The electric pump includes a pump portion and a motor port... | 04/01/2008 |
| 7341413 | Self-piercing blind fastener A self-piercing blind fastener comprising a mandrel having an elongate cylindrical shell mounted on a stem of such mandrel and which extends co-axially about a central elongate axis of the blind fastener, the shell having a radially extending flange at one end and a... | 03/11/2008 |
| 7338260 | System and method for controlling current provided to a stepping motor A system and method is disclosed for controlling the input electrical current to an infusion pump stepper motor based on predetermined torque requirements. The system can include a motor controller and a non-volatile memory containing expected load torque values thr... | 03/04/2008 |
| 7325478 | High pressure low volume pump A piston carrier supports an elongated, slender piston rod for reciprocation in a pump cylinder to pump fluid into and out of the cylinder. The piston rod is made of a material such as sapphire or zircon and has a diameter less than about ten millimeters, and the pu... | 02/05/2008 |
| 7291114 | System and method of determining an individualized drug administration protocol A system and method for determining an individualized drug dosage is provided. The system includes a metabolic rate sensing means for sensing the metabolic rate of the individual. The system also includes a computing device having a processor, a memory, an input dev... | 11/06/2007 |
| 7278836 | Metering pump A metering pump that is capable of delivering a constant, rate of fluid over a wide range of viscosities at infinitely variable delivery rates. Two identical pumping chambers are provided with one operating in the suction mode, and the other in the discharge mode wi... | 10/09/2007 |
| 7270088 | System and method for storage and delivery of a fuel additive to a fuel tank A system for storage and delivery of a fuel additive to a fuel tank includes a reservoir in fluidic communication with a volumetric pump, through a tubular member such as a steel-braided hose. The pump is in further fluidic communication with the fuel return line of... | 09/18/2007 |
| 7237440 | Flow measurement apparatus having strain-based sensors and ultrasonic sensors A flow measurement apparatus is provided that combines the functionality of an apparatus that uses strain-based sensors and ultrasonic sensors to measure the speed of sound propagating through a fluid flowing within a pipe, and measure pressures disturbances (e.g. v... | 07/03/2007 |
| 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 |
| 7188639 | Storage tank for easily polymerizable compound and method of storage A storage tank for an easily polymerizable compound has acceptance piping and delivery piping with a circulation line directly connecting the acceptance piping to the delivery piping or with circulation lines respectively connecting the acceptance piping to the stor... | 03/13/2007 |
| 7156873 | Methods for detecting an abnormal condition of a blood pump system The present invention provides methods for detecting an abnormal condition of a blood pump system based on the power consumption of the pump actuator. By plotting differentiated power consumption of the pump actuator over time against the power consumption, a plot p... | 01/02/2007 |
| 7150711 | Method for controlling an assist pump for fluid delivery systems with pulsatile pressure Method for controlling an assist pump for fluid delivery systems with pulsatile pressure. If for example a heart assist pump is driven with a constant number of revolutions, it is achieved, that the blood is also delivered through the assist pump, even when the hear... | 12/19/2006 |
| 7144500 | Variable speed waste removal system The invention is directed to a system for removing waste material from a fluid flowing in a channel. This system may incorporate the use of a trap for collecting the waste material while allowing the fluid to pass; a rake for removing the waste material away from th... | 12/05/2006 |
| 7128539 | Method for improved cleaning of a pumping system Improved method for cleaning a pump, fluid hose, and spray gun is provided by, for example, repeatedly changing the flow rate of the cleaning fluid pumped through the system to generate turbulence or increased turbulence and increased frictional resistance for enhan... | 10/31/2006 |
| 7118347 | Method for activating an electric motor and a metering pump by supplying predetermined pulse intervals to supply predetermined fluid quantities The methods serves for activating an electric motor of a metering pump with which the fluid quantity (Vnom) to be delivered is set by an external impulse trigger, wherein a predetermined delivery quantity (Vnom) is allocated to each impulse (t)... | 10/10/2006 |
| 7117120 | Control system for centrifugal pumps A control system for the operation of a centrifugal pump which may be used for production of gas and/or oil from a well. The control system includes vector feedback model to derive values of torque and speed from signals indicative of instantaneous current and volta... | 10/03/2006 |
| 7111491 | Portable differential pressure generator A dual range dynamic pressure differential generator for use at low pressures using a differential over a variable valve for a first stage pressure differential and the differential over a flow accelerator for a second stage pressure differential. The differential o... | 09/26/2006 |
| 7096719 | Apparatus for measuring parameters of a flowing multiphase mixture An apparatus 10 is provided that measures the speed of sound propagating in a multiphase mixture to determine parameters, such as mixture quality, particle size, vapor/mass ratio, liquid/vapor ratio, mass flow rate, enthalpy and volumetric flow rate of the fl... | 08/29/2006 |
| 7083392 | Pump and pump control circuit apparatus and method A method and apparatus for a pump and a pump control system. The apparatus includes pistons integrally formed in a diaphragm and coupled to the diaphragm by convolutes. The convolutes have a bottom surface angled with respect to a top surface of the pistons. The app... | 08/01/2006 |
| 7080975 | Integrated pump and ceramic valve A pump apparatus is provided which comprises a displacement pump and a ceramic valve construction formed of a ceramic rotor and a ceramic stator having flat surfaces which are positioned in sealing relationship. The displacement pump comprises a reciprocating piston... | 07/25/2006 |
| 7070393 | Method for regulating a compressor installation with a dryer and compressor installation used therewith The invention relates to a method for regulating a compressor installation with at least one compressor element (6) driven by a motor and, in the pressure conduit (11) thereof, a dryer (2) of the type comprising a pressure vessel (24) wit... | 07/04/2006 |
| 7063785 | Pump for liquid chromatography The invention provides a pump for liquid chromatography excellent in feeding liquid stably at an extremely low flow rate with high accuracy and in discharging bubbles at startup. At startup, a first plunger feeds solvent at a large flow rate to discharge bubb... | 06/20/2006 |
| 7063513 | Liquid chromatograph pump with dual cylinders and dual plungers In a pump for feeding a liquid for chromatography, first and second plungers form first and second volumes respectively together with first and second chambers, the first plunger is prevented from changing the first volume sufficiently for feeding the liquid between... | 06/20/2006 |
| 7040868 | Pumping system for controlling pumping speed during discharge pressure fluctuations The pressure downstream of a pump is measured and the speeds of the engine and pump are controlled in response to pressure changes downstream of the pump by a controlling element overriding a governor of the engine. The speed of the engine and the pump are connected... | 05/09/2006 |
| 7033147 | Centrifugal fluid pump assembly with flow rate calculating section A centrifugal fluid pump assembly includes a body section and a control mechanism 6. The body section includes a housing, an impeller rotatable within the housing, and a motor for rotating the impeller. The pump assembly includes a motor current flow rate-related da... | 04/25/2006 |
| 6960063 | Vortex attractor without a backplate A vortex generating apparatus has the capability of attracting and removably adhering one or more solid objects. The apparatus comprises an impeller housed within a shell. The vortex attractor generates a vortical fluid flow generally in the form of a helical or spi... | 11/01/2005 |
| 6955650 | Metabolic calorimeter employing respiratory gas analysis An indirect calorimeter for measuring the metabolic rate of a subject includes a respiratory connector configured to be supported in contact with the subject so as to pass inhaled and exhaled gases as the subject breathes, a flow pathway, and a hygiene barrier posit... | 10/18/2005 |
| 6939109 | Pump control system The present invention provides a system which comprises primary supply pumps and secondary supply pumps and controls pressurized water supply systems, air-conditioning systems, or the like that supply chilled water or hot water using these pumps. In the present inve... | 09/06/2005 |
| 6938498 | Hydrocarbon gas flow rate adjusting method and apparatus An object of the present invention is to provide a hydrocarbon gas flow rate adjusting method and apparatus, which suppress deterioration of an elastic foamed body with the passage of time and enables a stabilized adjustment of the flow rate for a long period by com... | 09/06/2005 |
| 6939111 | Method and apparatus for controlling medical fluid pressure A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a method of controlling pressure in a medical fluid pump is provided. The method includes the steps of controlling a pump member acceleration during a first portion... | 09/06/2005 |
| 6935356 | Underground storage tank metering system in a service station environment A meter coupled in close proximity to an underground storage tank fuel pipe that delivers fuel from the underground storage tank to fuel dispensers in a service station environment. The meter measures the total amount of fuel drawn from the underground storage tank.... | 08/30/2005 |
| 6929018 | Underground storage tank metering system in a service station environment A meter coupled in close proximity to an underground storage tank fuel pipe that delivers fuel from the underground storage tank to fuel dispensers in a service station environment. The meter measures the total amount of fuel drawn from the underground storage tank.... | 08/16/2005 |
| 6905296 | Peel-type blind rivet A peel type blind rivet for securement in an aperture of one or more workpieces, the rivet having a tubular shell a flange abutting one side of the workpieces, together with a mandrel with a stem extending through the shell and forming an enlarged head adjacent to t... | 06/14/2005 |
| 6866483 | High-pressure cleaning device High-pressure cleaning device with an electric motor and a pump for conveying a cleaning fluid, with a plunger, which is displaceable by the cleaning fluid in dependence on its pressure or its flow rate, and with an electric switch, which is actuable by the plunger ... | 03/15/2005 |
| 6860723 | Slurry flow control and monitor system for chemical mechanical polisher A system for controlling and monitoring a rate of flow of a fluid, such as a CMP slurry, comprising a pump for pumping the slurry; a flow meter for monitoring the rate of flow of the slurry; and a controller operably connected to the flow meter and the pump. The con... | 03/01/2005 |
| 6844094 | Gas-supplying apparatus for fuel cell A gas-supplying apparatus for a fuel cell, which generates electric power due to an electrochemical reaction between oxygen and hydrogen, during which water is produced, and which has respective gas passages within the duel cell according to the present invention co... | 01/18/2005 |
