| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 417066000 | Contact or entrainment within rotary impeller | 26 |
| 20110123358 | VACUUM PUMP - A vacuum pump, in particular a turbomolecular pump or a multi-inlet pump, includes a rotor shaft ( | 05-26-2011 |
| 20120275932 | Centrifugal Fan Device - A dispensing device includes a housing, a fan, and an annular reservoir. A compound is disposed within the reservoir. The dispensing device further includes a permeable substrate in communication with the annular reservoir for releasing the compound in a first passive state. The compound is released from the permeable substrate according to a uniform diffusion profile. Rotation of the fan causes air to pass over the permeable substrate to release the compound in a second active state. | 11-01-2012 |
| 20130243615 | PUMP | 09-19-2013 |
| 20150078921 | AIR TREATMENT CHEMICAL DISPENSER HAVING ANGLED DISPERSION OF CHEMICALS - A device for dispensing an air treatment chemical includes a housing having an inlet for permitting air to enter into an interior space of the housing and an outlet for permitting air mixed with air treatment chemical to exit the interior space of the housing. A substrate positioned within the housing bears the air treatment chemical. A power supply mounted within the housing powers a motor mounted within the housing. The motor is connected to an impeller mounted within the housing. The impeller moves air from the inlet adjacent the substrate to mix the air treatment chemical into the moving air and deliver the mixture of air and air treatment chemical through the outlet to outside of the housing. The housing includes a transitional body defining a convergent-divergent channel for compressing the mixture at the converging section and expanding the mixture at the diverging section. | 03-19-2015 |
| 417067000 | Passage in impeller shaft for pumped or motive fluid | 1 |
| 20080286121 | Ejector-type rotary device - A centrifugal-type ejector machine of the invention comprises a sealed housing with a rotating rotor. The interior of the housing is filled with a liquid. The rotor has a central axial opening and is provided with a plurality of radial channels leading to the outer periphery of the rotor in a substantially tangential direction to the rotor periphery. The device operates as a compressor or a vacuum chamber based on the principle that difference of speeds between the periphery of the rotating rotor and stationary liquid created a negative pressure at the exit of radial channels of the rotor connected to the source of gas, which is extracted from the channels of the rotor into liquid and is removed through the outlet port of the compression chamber. In case the device works as a vacuum chamber, evacuation occurs through the aforementioned radial channels and the hollow shaft of the rotor. | 11-20-2008 |
| 417068000 | Liquid ring | 19 |
| 20080260543 | LIQUID RING COMPRESSOR - Liquid ring compressor, characterized by an eccentric inner rotor ( | 10-23-2008 |
| 20090185918 | Fluid Transfer Using Devices with Rotatable Housings - A liquid ring pump includes an external housing enclosing a volume including a lower fluid reservoir. A rotatable inner housing is within the volume of the external housing, the inner housing enclosing an inner fluid chamber. A pitot tube provides fluid communication between the lower fluid reservoir and the inner fluid chamber. The housings and pitot tube are adapted so that when the inner housing rotates, fluid flows from the lower fluid reservoir through the pitot tube into the inner fluid chamber to develop a liquid ring within the inner fluid chamber such that an inner radial wall of the liquid ring is just radially outward from a point where the pitot tube enters the inner fluid chamber. | 07-23-2009 |
| 20090290993 | Liquid Ring Compressor - A liquid ring rotating casing compressor (LRRCC), including a shaft, an impeller having a core and a plurality of radially extending vanes rotatably coupled to the shaft, a tubular casing having an inner surface and an outer surface eccentrically rotatably disposed with the impeller and disc-shaped portions laterally coupled to the vanes and/or to the core. The casing defines with the impeller a compression zone, wherein edges of the vanes rotate in increasing proximity to an inner surface of the casing and an expansion zone and edges of the vanes rotate in increasing spaced-apart relationship along an inner surface of the casing. An inlet port communicates with the expansion zone, an outlet port communicates with the compression zone, and there is also provided a drive for rotating motion to the casing. | 11-26-2009 |
| 20110243758 | LIQUID RING PUMP WITH GAS SCAVENGE DEVICE - A liquid ring pump having a channel including a first opening which opens into a first bucket formed by rotor blades. The first opening is located along an arcuate path between a closing edge of an inlet port and a leading edge of a discharge port The inlet port and discharge port are in a port plate of the liquid ring pump. The channel has a second opening which opens into a second bucket formed by rotor blades The second opening is on an arcuate path between a closing edge of the discharge port and a leading edge of the inlet port. A fluid pathway interconnects the first and second openings. At least a portion of the liquid ring pump forming the channel is disposed in a circumferential cylindrical cavity, wherein the cavity is formed from a plurality of axially extending rotor blade ends. | 10-06-2011 |
| 20110300005 | LIQUID RING VACUUM PUMP FOR DEGASSING MOLTEN PLASTIC - A liquid ring vacuum pump ( | 12-08-2011 |
| 20120076671 | METHOD OF CONVERTING LIQUID RING PUMPS HAVING SEALING LIQUID VENTS - Converting a liquid ring pump which vents sealing liquid (compressant) from the working chamber of the pump to a liquid ring pump having a gas venting system by retasking a selected passage of the liquid ring pump. The passage is selected from a group of passages consisting of ( | 03-29-2012 |
| 20120087808 | LIQUID RING COMPRESSORS FOR SUBSEA COMPRESSION OF WET GASES - The present disclosure is directed to liquid ring compressors that can be employed to remove liquid from a wet gas and/or to compress a wet gas. In one embodiment, a liquid ring compressor includes a shaft, a main body inner casing disposed about the shaft to form a chamber between the shaft and the main body inner casing, and an inlet configured to remove a portion of liquid from a wet gas and to direct the wet gas into the chamber. The liquid ring compressor also includes an impeller rotatably disposed within the chamber and configured to direct a remaining portion of the liquid in the wet gas out towards the main body inner casing to form a liquid ring within the chamber to compress the wet gas. | 04-12-2012 |
| 20140079565 | HELICAL IMPELLER TYPE LIQUID RING COMPRESSOR - A helical impeller liquid ring compressor includes a compressor body cooperating with first and second cover plates to define a compression chamber for receiving a helical impeller and a liquid. The compressor body has a compression section. The first cover plate seals a suction end of the compression chamber, and has an air inlet in fluid communication with the compression chamber. The second cover plate seals a pressure end of the compression chamber, and has an air outlet in fluid communication with the compression chamber. The impeller extends through the compression chamber, and includes a shaft rod and at least one helical blade. Upon rotation of the impeller, a liquid ring is generated from the liquid, and cooperates with the shaft rod and the blade to form air chambers. | 03-20-2014 |
| 20140119955 | PORT PLATE OF A FLAT SIDED LIQUID RING PUMP HAVING A GAS SCAVENGE PASSAGE THEREIN - A liquid ring pump includes a port plate coupled to a pump head. The port plate has an opening with a first end at a first section and a second end at a second section. The first section opens through a portion of a surface forming a first face of the port plate. The second section opens at the second end into a shaft receiving aperture of the port plate. The first and second sections are continuous. The first section is angularly between the closing edge of a port plate outlet and leading edge of a port plate inlet. A length measured from the first section to the inlet's leading edge is less than a length measured from the first section to the outlet's leading edge. The first section does not open into the outlet or inlet. | 05-01-2014 |
| 20140286797 | Liquid-Ring Vacuum Pump and Impeller for a Liquid-Ring Vacuum Pump - A liquid-ring vacuum pump comprises a pump casing and an impeller that is eccentrically mounted in the pump casing. The impeller is made of a material having a modulus of elasticity of less than 4000 N/mm | 09-25-2014 |
| 20140294609 | GAS PUMPING AND TREATMENT DEVICE - A device for pumping and treating gases is disclosed. The device features a stator having a plurality of pumping stages connected in series one after another between a suction side and a delivery side by the inter-stage ducts. The device also includes an inner tube and a blind outer tube, the tubes inserted one inside the other and made of ceramic material, the inner tube connected to the delivery side of the rotor housing of a pumping stage and the outer tube connected to the stator and communicating with at least one inter-stage duct formed in the stator, the tubes defining a path for the pumped gases. The device also includes a plasma source located outside the stator to generate a plasma in the path of the pumped gases. | 10-02-2014 |
| 20140322039 | Liquid-Ring Vacuum Pump - A liquid-ring vacuum pump comprises a pump casing and a shaft eccentrically mounted in the pump casing. An impeller and a rotor of a drive motor are connected to the shaft. A disk cam is arranged parallel to the impeller. A first main bearing for the shaft is arranged between the impeller and the rotor of the drive motor, on the plane of the disk cam. The impeller is arranged between the first main bearing and a second main bearing. The arrangement of the bearings prevents the shaft from bending, thus allowing the leakage gap between the impeller and the disk cam to be kept small. | 10-30-2014 |
| 20150017027 | LIQUID RING COMPRESSOR - A liquid-ring, rotating-casing compressor comprises a shaft carrying an impeller having a core and a plurality of radially extending vanes rotatably coupled to the shaft for rotation around a first axis, and a tubular casing mounted for rotation relative to the impeller around a second axis that is parallel to and offset from the first axis. The casing and impeller define a compression zone wherein edges of the vanes rotate in increasing proximity to an inner surface of the casing and an expansion zone wherein edges of the vanes rotate in increasing spaced-apart relationship along an inner surface of the casing. An inlet port communicates with the expansion zone, an outlet port communicates with the compression zone, and a drive imparts rotating motion to the casing. The eccentricity ecr of the casing relative to the impeller is between about (1−c)/4 and (1−c)/9, preferably less than half (1−c)/3. | 01-15-2015 |
| 20150093260 | LIQUID RING PUMP WITH MODULAR CONSTRUCTION, AN INTER-STAGE BYPASS AND OVERLOAD PROTECTION - A modular liquid ring pump has a liquid ring overload protection system including a passage from a working chamber directly to the pump discharge passage and a mechanical relief valve configured to release liquid from the working chamber during compressor overload. The liquid ring pump, when configured to have two stages, has an inter-stage by-pass system that includes an opening in an inter-stage passage and a pressure sensitive mechanical valve that allows the discharge of a first stage compressor to flow directly to the pump discharge at start up or during low pressure operation. The liquid ring pump's modular construction may be easily configured from a single stage pump to a two-stage pump and vice versa by using the same bearings, head, and drive system and only changing the body, cone, and rotor. | 04-02-2015 |
| 20150345495 | METHOD OF CONVERTING LIQUID RING PUMPS HAVING SEALING LIQUID VENTS - A conical member for a pump head of a liquid ring pump, the conical member including a body, the body defining a first body opening on a first end positioned to abut a first pump opening, a second body opening on the first end positioned to abut a second pump opening, and a port. The conical member further includes a radially outer lip arranged about the first end and positioned to abut a pump aperture. A sealing liquid introduction path is arranged to introduce sealing liquid to a working chamber, the sealing liquid introduction path arranged at least partially between the second body opening and an outlet, and a gas vent passage is arranged to vent gas from the working chamber, the gas vent passage arranged at least partially between the port and the first body opening. | 12-03-2015 |
| 20150354573 | SIDE-CHANNEL PUMP WITH ASYMMETRICAL CROSS-SECTIONS OF THE SIDE CHANNELS - The invention relates to a side-channel pump that allows a reduced wear. The side-channel pump has a housing which encloses a pump chamber ( | 12-10-2015 |
| 20160177952 | MOBILE SLUDGE EXHAUSTER AND METHOD | 06-23-2016 |
| 417069000 | With diverse pump | 2 |
| 20110008183 | PUMP SYSTEM WITH VACUUM SOURCE - A self priming pump system that includes a motor coupled to a centrifugal pump for driving the centrifugal pump. A separator having a reservoir is provided for storing a limited amount of pumped fluid in advance of the centrifugal pump. A vacuum source provides a vacuum suction to the reservoir to draw pumped fluid into the reservoir to prime the pump. To increase the reliability of the vacuum pump system, a deflector and/or extension may be provided in the reservoir to help prevent pumped fluid from entering the vacuum pump input. Also, the configuration of a tank used to store liquid for the vacuum pump system may be configured to separate and collect sediments near a drain port, which then can be easily drained. For positive head pressures, one or more valves may be used to prevent pumped fluid from escaping the reservoir, if desired. | 01-13-2011 |
| 20130280107 | PUMP DEVICE - The invention relates to a pump device for operating vacuum drainage systems and for pumping sewage, in particular on watercrafts. This pump device comprises a drive device having a drive shaft that comprises a first shaft end and a second shaft end and can be rotated by means of the drive device. The pump device further comprises a centrifugal pump which has at least one impeller that is connected in a torque-proof manner to the drive shaft in the region of the first shaft end. | 10-24-2013 |
| 417070000 | Peripheral motive fluid inlet | 1 |
| 20160008827 | PORTABLE MISTING FAN | 01-14-2016 |
| 417071000 | Axial inlet for pumped fluid | 1 |
| 417072000 | Peripheral pumped fluid outlet | 1 |
| 20140369860 | TUBE PUMP FOR TRANSFERRING MOLTEN METAL WHILE PREVENTING OVERFLOW - A tube pump for transferring molten metal includes a refractory tube having upper and lower end portions. A motor is disposed near the upper end portion of the refractory tube. A refractory shaft extends in the refractory tube and is connected to the motor near the upper end portion of the refractory tube. A refractory impeller is connected to the shaft in the lower end portion of the refractory tube. An upper outlet extends from upper end portion of the refractory tube through which molten metal flows upon rotation of the impeller. The refractory tube is enclosed at its upper end portion. A gas source flows gas into the refractory tube at or near its upper end portion under a pressure which prevents overflow of the molten metal above the outlet. Flux may be directed into the refractory tube alone or with gas. | 12-18-2014 |
