Class / Patent application number | Description | Number of patent applications / Date published |
417062000 | ALTERNATE SERIES OR PARALLEL OPERATION OF PLURAL PUMPS | 12 |
20080213102 | Fluid pump having multiple outlets for exhausting fluids having different fluid flow characteristics - A pump configured to receive fluids through an inlet and direct those fluids in two directions through two or more fluid discharge outlets, wherein the fluids are discharged with different fluid characteristics, such as different pressures or flow rates. In one embodiment, the pump may include first and second pumping chambers for pumping fluids from the pump with different pressures or flow rates, or both, eliminating the need for two pumps. The fluid may be exhausted from the pump through a first fluid discharge outlet and a second fluid discharge outlet of the pump. | 09-04-2008 |
20090297365 | FOOT AIR-EXTRACTING AND INFLATING MACHINE - A foot air-extracting and inflating machine includes a machine body having a support frame provided with a pivot support member for pivotally assembling a pedal having its underside disposed with two push-rod pivot support members. The machine body is installed inside with two pumps respectively provided with a piston having a push rod pivotally combined with the push rod pivot support member of the pedal. Each pump has its lower side juxtaposed with two one-way valves respectively positioned in the two-way direction and having its lower side bored with air holes covered with a valve plate. An air suction tube and an exhaust tube are assembled under each pump, respectively aligned to the one-way valves. An air suction manifold communicates the two air suction tubes and connected with an air suction outer tube, and an exhaust manifold communicates the two exhaust tubes and connected with an exhaust outer tube. | 12-03-2009 |
20100111715 | AIR SUPPLY MECHANISM FOR VENTRICULAR ASSIST SYSTEM - A pump system has a rotatory shaft and a rotatory drive arrangement coupled to the rotatory shaft for applying rotatory energy thereto. First through fourth pump arrangements are coupled to the rotatory shaft, each pump arrangement pumping a pulse of air during each rotation of the rotatory shaft, the first, second, third, and fourth pump arrangements pumping a corresponding pulse of air sequentially during each rotation of the rotatory shaft. The rotatory shaft has a first and second ends, and a central region therebetween where an electric motor is coaxially arranged. The first and third pump arrangements are coupled to the first end of the rotatory shaft, and the second and fourth pump arrangements are coupled to the second end of the rotatory shaft. Angularly displaced eccentric couplers couple the pump arrangements to the respective ends of the rotatory shaft. | 05-06-2010 |
20100183449 | HIGH-PRESSURE PUMP FOR SUPPLYING FUEL TO AN INTERNAL-COMBUSTION ENGINE - A high-pressure pump for supplying fuel to an internal-combustion engine has a pump body and an actuating shaft which extends along a longitudinal axis and which is supported rotatably about the longitudinal axis by the pump body. The shaft has an eccentric portion and a prismatic jacking end. A first pumping station has a gear engaged with the prismatic jacking end and a second pumping station has at least one piston. The piston is slidable relative to the pump body transversely with respect to the longitudinal axis and is actuated by the eccentric portion of the actuating shaft. The prismatic jacking end is made of a harder material than the material with which the remainder of the actuating shaft is made. | 07-22-2010 |
20100196169 | Pump apparatus | 08-05-2010 |
20120257988 | APPARATUS FOR MIXING AND PUMPING MANURE SLURRIES - An apparatus for mixing and pumping manure slurry from a manure pit comprises a pump unit having first and second mixing rotors and a pumping rotor. In operation, the first mixing rotor draws solids downwardly towards the pump unit while the second mixing rotor redirect a portion of the solids drawn by the first mixing rotor away from the pump unit, thereby allowing to control the ration of solid contents in the slurry pumped by the pumping rotor. A non-diverted flow distribution arrangement is also provided for selectively connecting the pump outlet in straight-through flow connection with either a drainage pipe or a re-circulation pipe. | 10-11-2012 |
20120308405 | MODULAR PUMP - A modular liquid pump operable as a liquid pump when used by itself and as a foam pump when combined with a modular air pump is disclosed herein. In one embodiment, the modular liquid pump includes a housing for forming a least a portion of a liquid pump chamber; an inlet valve for allowing liquid into the liquid pump chamber; an outlet valve for allowing liquid out of the liquid pump chamber; and an attachment mechanism configured to secure the liquid pump housing to a modular air pump. The modular liquid pump operates alone to output a liquid or operates in combination with an air pump to output a foam. One embodiment includes a modular air pump configured to be secured to the modular liquid pump. In such a combination, the modular liquid pump and the air pump operate together to output a foam. | 12-06-2012 |
20130164149 | Energy Saving Green Wastewater Pump Station Design - An energy saving three pump waste water pump station design that eliminates the high energy usage of traditional waste water pump stations, reduces maintenance costs to the pumps and increases the useful lives of the pumps by having a primary pump running continuously, a second pump mining during high demand periods and a third pump functioning primarily as a back up pump. Unlike conventional pump-station designs, the Energy Saving Green Pump Station Design utilizes a single float switch panel. Whereas independent float switches trigger start-stops in conventional pump station designs, the Green design incorporates a remote controllable panel for rotating the primary, secondary and third pumps on a schedule. This design also provides a process for determining in-flow rates for a pump station and efficiency operating points of pumps so that the most efficient pumps with the lowest horsepower can be selected. | 06-27-2013 |
20130177452 | MULTI-PRESSURE GAS COMPRESSOR HAVING SIMULTANEOUS RUNNING AND CHARGING SYSTEMS - A multi-pressure compressor that includes a roll-cage frame, first and second compressor assemblies mounted in the roll-cage frame, a tank coupler, which is in fluid communication with the second compressor and is configured to be coupled to an auxiliary tank that is rated for an internal pressure in excess of 2500 psi, a bracket that is coupled to the roll-cage frame and configured to receive the auxiliary tank therein, and at least one controller for operating the first and second compressor assemblies. | 07-11-2013 |
20130330210 | COMPRESSION DEVICE, AND THERMODYNAMIC SYSTEM COMPRISING SUCH A COMPRESSION DEVICE - The compression device according to the invention includes first and second compressors mounted in parallel and an oil level equalization line arranged to fluidly connect the oil sumps of the first and second compressors. The oil level equalization line includes at least one oil level regulating portion positioned near one of the first and second compressors and including a dam wall extending transversely to the longitudinal direction of said oil level regulating portion and a flow opening arranged such that, when the oil level in the oil sump of the compressor situated near the oil level regulating portion extends above the upper level of the dam wall, oil flows through the flow opening toward the other compressor. | 12-12-2013 |
20130330211 | SYSTEM AND METHOD FOR DIRECT DRIVE PUMP - A direct drive pump employs an on-off tool to attach the drive rod string to a floating pump drive shaft in both torsion and tension. The downward thrust on the drive shaft, as well as the weight of the drive rod string, is born by a thrust bearing in the drivehead at the surface. A floater pump is used with this direct drive pump to permit the free vertical movement of the drive shaft. When a tandem direct drive pump is employed a housing containing a tandem pump drive shaft connector connects the shafts in an upper and lower tandem pump to permit the two to freely move in the tandem direct drive pump. | 12-12-2013 |
20140286795 | GAS CONTROL APPARATUS - A gas control apparatus includes an upper housing to which a second piezoelectric pump is joined, a lower housing to which a first piezoelectric pump is joined, and a diaphragm. The upper housing includes a discharge hole through which gas is discharged. The lower housing includes introduction holes through which gas is introduced, an opening, a first valve seat, a second valve seat, and a third valve seat. The diaphragm is sandwiched between the upper housing and the lower housing, and is fixed to the upper housing and the lower housing so that the diaphragm contacts the first valve seat, the second valve seat, and the third valve seat. The diaphragm divides an inner space of the upper housing and the lower housing to define valve chests together with the upper housing and the lower housing. | 09-25-2014 |