Entries |
Document | Title | Date |
20090098003 | MULTIPHASE SCREW PUMP - A twin screw pump includes a pair of rotors disposed inside a casing having an inlet and an outlet. Each rotor includes a set of threads disposed on a portion of an outer surface of a shaft. A first bearing is coupled at a first end of the shaft and a second bearing is coupled at a second end of the shaft. The first and second bearings are not separated by one or more seals. The first and second bearings are configured for being lubricated by the liquid medium of the process fluid when the twin screw pump is in an operational mode. | 04-16-2009 |
20090208358 | VARIABLE DISPLACEMENT GEAR PUMP - The variable displacement gear pump for a loading system in an industrial vehicle has main and sub gear pump portions, suction, discharge and bypass passages, and check and opening valves. The main gear pump portion has main drive and driven gears, and has suction and discharge side spaces. The sub gear pump portion has sub drive and driven gears, and has suction and discharge side spaces. The bypass passage returns hydraulic fluid in the discharge-side space of the sub gear pump portion to the suction passage. The check valve prevents hydraulic fluid in the discharge-side space of the main gear pump portion from flowing to that of the sub gear pump portion. The opening valve is used for opening and closing the bypass passage, and closes the bypass passage due to a pressure in a discharge conduit of the loading system increased by the load applied to the loading system. | 08-20-2009 |
20090304541 | GEAR PUMP, ESPECIALLY FOR A POWER STEERING SYSTEM - The invention relates to a gear pump, especially for a power steering system, having a housing, a first cover and a second cover, the first cover being integrated into the housing. | 12-10-2009 |
20110014080 | GEAR TYPE PERFORMANCE OIL PUMP - A high performance gear type oil pump for an internal combustion engine which has drive and driven gears which are, on one common side of the gears, respectively supported from the housing by a drive shaft and an idler shaft. In order to avoid cantilevering of the gears when generating pressurized oil, the other common side of the gears are each rotatable mounted on stub axles or pins which themselves are fixedly attached to the housing. In order to minimize wear, oil under pressure is supplied to the bearing surfaces of stub axles or pins which extend interiorly of the gears and also to the bearing surfaces of the housing which faces the common side of the gears where the stub axles are located, through oil supply passageways in the stub axles or pins. | 01-20-2011 |
20120020825 | DISPLACEMENT PUMP WITH SUCTION GROOVE - A displacement pump, including a pump chamber and a regulating chamber which are separated from each other by a piston, wherein the pump has a device with which fluid flowing from the pump chamber toward the regulating chamber can be drained. | 01-26-2012 |
20120093673 | SIX-BLADE BIAXIAL ROTARY POSITIVE-DISPLACEMENT PUMP - A six-blade biaxial rotary positive-displacement pump includes a casing formed with a suction port and a discharge port, a pair of rotors accommodated in the casing and having rotor shafts rotatably mounted on housings fixed to opposed ends of the casing, respectively. Each rotor is formed with six blades extending radially equiangularly about the rotor shaft. Each blade is formed so as to have a constant thickness in a rotational direction of each rotor. Each blade has an apex and a valley, and a distance between the apex and the valley is set so as to range from three to five times larger than the thickness of each blade. | 04-19-2012 |
20120195783 | Noise and shock reduction in rotary positive displacement blowers - A roots-style blower ( | 08-02-2012 |
20120219446 | INPUT SHAFT ASSEMBLY FOR GEAR PUMP - A shaft assembly includes a shaft with a first radial shoulder and a second radial shoulder. A retainer plate is located at least partially between the first radial shoulder and the second radial shoulder to avoid damage when an impact load is applied to the shaft. A spring assembly biases the shaft out of contact with the retainer plate during operation. | 08-30-2012 |
20120258006 | External Gear Pump for Hot Cooking Oil - An overhung external spur gear positive displacement pump for hot oil or deep fryer applications is disclosed. The external gear pump includes a casing that includes a through bore for accommodating a drive shaft that leads to a pump chamber that accommodates a drive gear and a driven gear. The casing further includes a recess connected to the pump chamber for accommodating a stationary pin. The casing also includes a proximal end coupled to a prime mover and a distal end coupled to a head. The gears are enclosed in the pump chamber by the head. The stationary pin is accommodated within the driven gear and the drive shaft is coupled to the drive gear. The head is provided in the form of a flat plate with a plurality of holes for accommodating fasteners that couple the head to the distal end of the casing. | 10-11-2012 |
20130004356 | GEARED HYDRAULIC MACHINE - A geared hydraulic machine destined to function as a pump or a motor, comprising at least a module ( | 01-03-2013 |
20140056747 | ROTATIONAL CLAP SUCTION/PRESSURE DEVICE - The present invention relates to a simple and straightforward positive displacement suction/pressure device (rotational clap suction/pressure device) for utilizing in general industrial flow machines, such as various positive displacement pumps, vacuum pumps, compressors, flow meters, and rotary internal combustion engines. The object of the present invention using a double non-uniform rotation is to provide a simple and durable mechanical device having improved efficiency, by replacing the existing linear contact between various types of rotors or between a rotor and a housing, which is a problem in existing positive displacement flow machines and rotary internal combustion engines, with a whole surface. | 02-27-2014 |
20140119975 | SCREW TYPE LIQUID RING PUMP WITH INTEGRATED MACERATOR - Screw type liquid ring pump ( | 05-01-2014 |
20140161656 | Gearbox Pump - What is proposed is a transmission pump ( | 06-12-2014 |
20140271313 | Toothed-Lobed Gear Pump - Toothed gears and lobed gears intermesh to create large volume pockets in gear sets of a given size. The pockets are larger than the pockets that exist in current tooth or lobe pumps and provide the benefit of a pump that better handles shear sensitive liquids. Preferably, the profiles of the teeth and of the lobes are involute-shaped to provide rolling contact and a fixed pressure angle between the teeth and lobes during engagement. The toothed gears and lobe gears improve upon standard spur and helical gear designs by omitting alternate teeth on the standard toothed gears and filling in corresponding gaps on the mating standard lobed gears. Additional tooth and lobed gear rotors may be added in tandem as additional pairs of gears to the shafts and circumferentially offset to provide driving tooth engagement between at least one pair of the toothed and lobed rotors at every point around the rotational circumference of the rotors. This spur gear or helical gear configuration eliminates the need for separate driving/synchronizing gears. | 09-18-2014 |
20140301882 | SELECTABLE FLOW HYDRAULIC GEAR PUMP - A selective flow hydraulic gear pump has an integral unit with a front pump section and a rear pump section. The front pump section has a pumping gear set, gear plate, and bearing plate housing. The rear pump section has a pumping gear set, gear plate, and cover housing. The integral unit has an inlet port common to both the bearing plate housing and the cover housing. Check valves and solenoid operated control valves are contained within the bearing plate housing and the cover housing and are associated with a first fluid conduit. A second fluid conduit is in communication with and extends between the bearing plate housing an outlet port in the cover housing. | 10-09-2014 |
20150017049 | OIL PUMP - An oil pump of the present invention includes a housing ( | 01-15-2015 |
20150023825 | VOLUMETRIC SCREW COMPRESSOR - The present invention concerns a compression device ( | 01-22-2015 |
20150023826 | SCREW COMPRESSOR - Screw compressor with a compression chamber that is formed by a compression housing, in which a pair of meshed helical compressor rotors in the form of a screw are rotatably mounted and with a drive motor that is provided with a motor chamber formed by a motor housing, in which a motor shaft is rotatably mounted, and this motor shaft drives at least one of the aforementioned two compressor rotors, whereby the compression housing and the motor housing are connected directly together to form a compressor housing, whereby the motor chamber and the compression chamber are not sealed off from one another and whereby the rotor shafts of the compressor rotors, as well as the motor shaft, extend along axial directions that are oblique or transverse to the horizontal plane. | 01-22-2015 |
20150030491 | COMPRESSOR DEVICE AS WELL AS THE USE OF SUCH A COMPRESSOR DEVICE - Compressor device that is at least provided with a screw compressor with a compression chamber that is formed by a compression housing, with a drive motor that is provided with a motor chamber formed by a motor housing and with an outlet for the discharge of compressed air that is connected to a pressure vessel via an outlet pipe, whereby the compression housing and the motor housing are connected directly to one another to form a compressor housing, whereby the motor chamber and the compression chamber are not sealed off from one another and whereby the outlet pipe between the pressure vessel and the screw compressor is free of closing means. | 01-29-2015 |
20150086407 | ROTARY PISTON ENGINE WHICH ACTS AS A PUMP, CONDENSER OR MOTOR FOR A FLUID - The invention relates to a rotary piston engine ( | 03-26-2015 |
20150132172 | MICROPUMP, BEARING ELEMENT FOR A MICROPUMP, AND WORKING METHOD - The invention relates to a micro pump, comprising an inner rotor arranged on a shaft and an outer rotor, which form a rotor unit including a delivery chamber for fluid, wherein the pump comprises a multi-functional bearing member for the shaft with improved lubrication, to a bearing member for a micro pump and to an operating method. | 05-14-2015 |
20150345497 | COMPRESSOR SYSTEM WITH RESONATOR - In one form, a compressor system includes a compressor, and an annular ring disposed downstream of the compressor and structured to reduce pressure fluctuations in the pressurized air discharged by the compressor. The annular ring may include an internal passage for conducting the pressurized air. The annular ring may include at least one resonator in fluid communication with the internal passage. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith. | 12-03-2015 |
20160047462 | Gear Wheel with Meshing Teeth - The invention concerns a gear wheel ( | 02-18-2016 |
20160053757 | METERING PUMP MADE OF PLASTIC - The invention relates to a disposable metering pump made of plastic for products having solid fractions. Said disposable metering pump has two rotors ( | 02-25-2016 |
20160108911 | Dual-screen movement converter - A dual-screw movement converter, in which a movement converter between a drive organ includes a screw fixed in translation and driven in rotation, having threads, a nut connected in translation to the receptor organ, having first threads engaging with the threads of the screw and second threads. A sleeve coaxially surrounds the nut, fixed in rotation and translation with respect to the screw and having threads with which the second threads of the nut engage. To the nut, slaved by its second threads to the threads of the sleeve, screw communicates a combined movement of rotation and translation whose translation component along an axis is transmitted to the receptor organ. | 04-21-2016 |
20170234312 | GEAR PUMP | 08-17-2017 |