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Class 415/58.2 - Radial flow runner portion guides re-entry working fluid (e.g., hub, back plate, etc.)


Subclass of Class 415 - Rotary kinetic fluid motors or pumps
Definition: Device wherein the working fluid* flows through
No. of patents: 35
Last issue date: 08/21/2007


NumberTitleIssue Date
RE39787Blower
A blower with the improved P-Q characteristics is provided. A blower comprising a shaft rotatably supported in a tubular casing, a cup shaped motor yoke 11 fixed to the shaft, and a body portion 15 of an impeller 14 comprising a large number of ...
08/21/2007
7229243Compressor
A compressor for compressing a gas comprises an impeller wheel (1) mounted within a housing (2) defining an inlet and an outlet (6). The inlet comprises an outer tubular wall (7) extending away from the impeller wheel in an upstream direc...
06/12/2007
7191519Method for the manufacture of a vaned diffuser
An improved method for manufacturing a vaned diffuser (101) of a turbocharger, preferably from aluminum or an aluminum alloy, where the vaned diffuser possesses at least one axis (115) suitable for separating the vaned diffuser from its rigid mold by t...
03/20/2007
7182570Centrifugal pump
Centrifugal pump, in particular drain pump for washing machines, comprising a casing (10) that defines a chamber (11) within which an impeller formed by a hub (14) and a disk (15) provided with blades (16) is capable of rotating.
02/27/2007
7179057Velocity profile impeller vane
In accordance with the present invention, an impeller for use in a centrifugal pump has at least one vane the radially outer terminal end of which is configured to produce a flow velocity profile that controls and reduces the wear caused by slurry fluid being expell...
02/20/2007
7175384Centrifugal pump
A centrifugal pump, the impeller (2) of the pump having one or more holes through the impeller adjacent to its hub. The hole or holes (7) are positioned between the vanes (3) of the impeller and closer to the hub than the periphery of the impell...
02/13/2007
7150600Downhole turbomachines for handling two-phase flow
Disclosed is a submersible pump assembly for handling two-phase flow. The pump assembly preferably includes a housing and a first stage. The first stage includes an impeller assembly and a diffuser assembly, which are collectively configured to produce a diagonal fl...
12/19/2006
7112033Hygienic mechanical seal flushing system for pure liquids in sanitary centrifugal pumps
A sanitary centrifugal pump with a hygienic mechanical seal flushing system. The pump has a housing with a pumping chamber defined therein. An impeller is at least partially contained in the housing and is connected to a shaft for rotation. The rotation of the impel...
09/26/2006
RE39117Blower
A blower with the improved P-Q characteristics is provided. A blower comprising a shaft rotatably supported in a tubular casing, a cup shaped motor yoke 11 fixed to the shaft, and a body portion 15 of an impeller 14 comprising a large number of ...
06/06/2006
6893207Impeller for gassy well fluid
A centrifugal pump pumps well fluid with a high gaseous content by utilizing an impeller design for use in gaseous liquids. The impeller has high discharge angles and large balance holes. The impeller has short and long vanes alternating with each other. The shorter...
05/17/2005
6881025Suction cup vortex attractor
A vortex generating apparatus has the capability of attracting and removably adhering one or more solid objects, with the improvement of being able to removably adhere to non-planar surfaces, e.g., concave or convex surfaces and/or inside and outside corners. Genera...
04/19/2005
6802693Vortex attractor with vanes attached to containing ring and 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...
10/12/2004
6676366Submersible pump impeller design for lifting gaseous fluid
A gas-handling centrifugal pump has impellers for pumping gaseous materials containing up to 50% by volume free gas. The impellers have split vanes with high exit angles up to about 90 degrees and preferably greater than 50 degrees. The split vanes define...
01/13/2004
6402461Pumps
A fluid pump (10) has a body housing (14) a fluid pumping chamber having a rotatable pumping member (16), a drive shaft (12) which passes through an aperture in the body into the pumping chamber to effect rotation of the pumping member in use, a seal (18)...
06/11/2002
6361270Centrifugal pump for a gas turbine engine
A centrifugal pump for a gas turbine engine, including a housing having a fluid inlet port for receiving fluid at an initial pressure and an interior chamber defining a central axis. An impeller disk disposed within the interior chamber of the housing and...
03/26/2002
6099243Centrifugal pump with seal cooling and debris flushing arrangement
A centrifugal pump of the type in which fluid enters radially includes a debris blocking shield over a space around a shaft seal with a channel to supply energized fluid to near the center of the pump impeller. Apertures in the impeller then pass the flui...
08/08/2000
6012909Centrifugal pump with an axial-field integral motor cooled by working fluid
An integral axial-field motor pump, includes a housing assembly having a working fluid inlet, a working fluid discharge, and a stationary shaft mounted therein. A motor stator is mounted in the housing assembly radially surrounding the stationary shaft an...
01/11/2000
5827041Pump and seal arrangement to prevent leakage due to fluid boiling and cavitation
A fluid pump having a pump body defining a pump cavity and a pump shaft rotatable on a bearing in the cavity, wherein the pump cavity contains a seal in a closed chamber between the pump body and the shaft, and the cavity is characterized by a first zone ...
10/27/1998
5735686Combustion blower shaft leakage relief
A method of operating a pre-mix power burner assembly. The method comprises the steps of: using a fan to supply and control combustion; mixing fuel gas and primary air together; introducing the mixture into secondary air in a combustion zone; and relievin...
04/07/1998
5713719Self flushing centrifugal pump
A self flushing centrifugal pump has a fluid flushing passageway disposed in a housing of the pump which directs flushing fluid flow from a volute passageway in the housing of the pump near an outlet port of the pump to a chamber in the pump near a pump s...
02/03/1998
5669756Recirculating diffuser
A centrifugal compressor having an impeller wheel mounted for rotation about a central axis and a diffuser for emptying compressed fluid into a collector chamber. A plenum chamber is located behind the impeller shroud and series of deswirl passages are lo...
09/23/1997
5628616Downhole pumping system for recovering liquids and gas
A downhole pumping system for recovering liquids and gas, comprising a first centrifugal pump having internal features for mixing introduced gas into introduced liquids, and a second centrifugal pump having an intake in fluid communication with a discharg...
05/13/1997
5542817Impeller for a rotary pump
Notches in the impeller cooperate with balancing holes therein, and a liquid-receiving slot, to direct liquid across the leading edges of impeller vanes to flush away any accreted substances therefrom. In addition, a large diameter deflector coupled to th...
08/06/1996
5525036Suction structure of a sirocco fan housing
This invention relates to a suction structure of a sirocco fan housing, the suction structure including a separate fluid suction guide, or a bellmouth member having a fluid suction guide integral therewith, disposed in a suction opening of the housing to ...
06/11/1996
5466118Centrifugal compressor with a flow-stabilizing casing
A centrifugal compressor with a flow-stabilizing casing includes an impeller (2) rotatably supported about a machine axis (7) and having a hub (9) with a plurality of impeller vanes (3) on its periphery; a compressor casing (4), which encloses the impelle...
11/14/1995
5427498High performance centrifugal pump having an open-faced impeller
The centrifugal pump with an open-faced impeller comprises at least one open-faced impeller having blades placed inside a casing defining both a delivery pipe and a suction pipe facing the base of the blades situated in the vicinity of a central shaft for...
06/27/1995
5277541Vaned shroud for centrifugal compressor
A centrifugal compressor impeller for gas turbine engines designed to efficiently operate at both part-speed and full speed design points includes slanted vanes in a secondary air inlet to the impeller. The vanes are tangentially slanted in the direction ...
01/11/1994
5156522Deflector means for centrifugal pumps
Improvements in centrifugal pumps are disclosed which minimize flow recirculation effects induced by wear ring leakage flow. The improvements may be used individually or in combination and comprise deflector means attached to the impeller, diverter means ...
10/20/1992
5059091Gas turbine engine compressor assembly
A compressor assembly (12,13) for a gas turbine engine (10) comprises a centrifugal compressor (12) having a variable cross-sectional area diffuser (13) located at its downstream end. When the cross-sectional area of the diffuser (13) is less than a maxim...
10/22/1991
4964783Device for emptying a liquid-collection tank in a water-conducting household appliance
An arrangement for emptying a liquid collection tank in household appliances that use water such as washing machines or dish washers. A centrifugal pump is provided with a housing and a floating impeller. An axial suction connection with a tubular connect...
10/23/1990
4778341Centrifugal pump particularly suitable for pumping fluids with a high gas content
A centrifugal pump for handling fluids with a high gas content, wherein the impeller is provided with a through-bore connected with the inlet of each outflow channel, as well as with at least one small bore inside each channel. The blades are not very div...
10/18/1988
4475866Liquid metal mechanical pump
An improvement in a liquid metal mechanical pump which includes a hydrostatic bearing immersed in liquid to rotatably support the lower end of a pump drive shaft and is constructed such that a part of liquid forced out of a diffuser is supplied to the bea...
10/09/1984
4255080Fans or the like
In a centrifugal fan or the like including an impeller housed in a casing, recirculation means are provided to recycle a portion of the gas discharge back to the blades of the impeller. Specifically these means comprise a radial passage between an impelle...
03/10/1981
4152092Rotary device with bypass system
A rotary fluid handling device, such as a turbine or a compressor, comprising a stationary body and a rotor rotatably mounted therein. The rotor has a flowway therethrough having a radially extending end. An annular seal coaxially surrounds the rotor with...
05/01/1979
4116171Cooling device for an internal combustion engine
A cooling device for liquid-cooled internal combustion engines, which device includes an annular radiator core or block which is traversed by the cooling air from the inside thereof toward the outside thereof, with a radial-flow fan or blower equipped wit...
09/26/1978
 
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