Matches 1 - 15 out of 15


Match Document Document Title
US20150219603 METHOD FOR HIGH PRESSURE GRADIENT CHROMATOGRAPHY USING PUMP STROKE CONTROL  
Described is a method of generating a flow having a composition gradient such as a mobile phase gradient for liquid chromatography. A pair of pumps is operated such that the initiations of pump...
US20100310384 System and Method for Servicing a Wellbore  
A method of servicing a wellbore, comprising establishing a pumping profile having a performance plan, operating a first pump according to a first pumping parameter value, and operating a second...
US20150184661 Transportable High Vertical-Lift Emergency Water Pumping System  
A transportable high vertical-lift emergency water pumping system moves emergency water from a water source at a low elevation to a higher elevation. The pumping system has a first pump having a...
US20120164001 VARIABLE CAPACITY OIL PUMP  
The invention relates to a wind turbine being provided with a fluid displacement means for ensuring a certain increased pumping capacity at a certain reduced rotational speed of the main shaft of...
US20150086387 METHOD AND APPARATUS FOR WARMING UP A VACUUM PUMP ARRANGEMENT  
A method for warming up a vacuum pump arrangement having a booster pump and a backing pump downstream of the booster pump for evacuating a process chamber includes setting the booster pump at a...
US20150211512 SYSTEM AND METHOD FOR DRIVING MULTIPLE PUMPS ELECTRICALLY WITH A SINGLE PRIME MOVER  
A converterless motor-driven pump system includes an off-grid prime mover. The prime mover includes a rotational driveshaft that operates in response to a throttle or fuel input controller to...
US20050244277 Fixed and variable compressor system capacity control  
A compressor control system includes at least one variable compressor, at least one fixed-capacity compressor, and a controller. The controller modulates the variable compressor based on a suction...
US20080247882 Split-Pressure Dual Pump Hydraulic Fluid Supply System for a Multi-Speed Transmission and Method  
A split-pressure, dual-pump system for supplying hydraulic fluid to a multi-speed transmission is provided. The system includes a low-pressure work circuit operatively connected to a fixed...
US20110236225 SYSTEM, APPARATUS, AND METHOD FOR RAPID PUMP DISPLACEMENT CONFIGURATION  
A system for changing a pump displacement configuration includes a blender that provides low-pressure fluid to a pump. The pump has a power end and fluid end, where the fluid end includes a number...
US20070154329 Refrigeration cycle system  
A refrigeration cycle system is provided with a two-cylinder type rotary compressor having one compression mechanism which includes a switching mechanism for switching a back surface side of a...
US20100193631 Hydraulic Drive, Hydraulic Supply Device, Airplane with a Hydraulic Supply Device and Method for Configuring a Hydraulic Supply Device  
A hydraulic drive for an aircraft includes: a gear, a first hydraulic pump and a second hydraulic pump, wherein the gear is installed in a gear housing and wherein the first hydraulic pump and the...
US20140301870 FLUID EJECTION DEVICE AND MEDICAL DEVICE  
A fluid ejection device includes a pulse generation unit that changes the volume of a fluid chamber using a volume changing section to eject pulsating flow; a fluid supply unit including a pump...
US20140341755 HORIZONTAL AND VERTICAL WELL FLUID PUMPING SYSTEM  
A pump system for producing fluids from a reservoir using a wellbore having a vertical section with a casing defining an annulus, a transitional section and a horizontal section, and a production...
US20130129529 PRECISION PUMP WITH MULTIPLE HEADS  
A pump for one or more different process fluids is provided including a pumping chamber having a process fluid inlet and outlet coupled to a process fluid valve on each pumping chamber for...
US20150337845 Multi-stage compressor system for generating a compressed gas  
A compressor system for generating a compressed gas having at least one main compressor to which pre-compressed gas is fed using at least one pre-compressor, wherein the at least one main...

Matches 1 - 15 out of 15