With Cutter Or Comminutor For Debris In Working Fluid Patents (Class 415/121.1)
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Patent number: 7950974Abstract: A device for cutting weeds carried by water inducted into a housing includes an intake, an outlet, an impeller for pumping water from the intake to the outlet as the impeller rotates about an axis, the impeller including a blade formed with a leading edge facing the intake, and a baffle secured against movement and including a cutting edge located adjacent the leading edge when the leading edge rotates to the location of the cutting edge.Type: GrantFiled: August 27, 2007Date of Patent: May 31, 2011Assignee: Surfango, Inc.Inventor: Yuting Rui
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Patent number: 7927066Abstract: A reflecting device that enables to prevent infiltration of particles into a processing chamber. The reflecting device is disposed in a communicating pipe. The communicating pipe allows the processing chamber of a substrate processing apparatus and an exhaust pump to communicate with each other. The exhaust pump has at least one rotary blade. The reflecting device comprises at least one reflecting surface. The at least one reflecting surface is oriented to the exhausting pump.Type: GrantFiled: March 2, 2006Date of Patent: April 19, 2011Assignee: Tokyo Electron LimitedInventors: Tsuyoshi Moriya, Takahiro Murakami, Yoshiyuki Kobayashi, Tetsuji Sato, Eiichi Sugawara, Shosuke Endoh, Masaki Fujimori
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Publication number: 20110046322Abstract: The pump assembly includes an impeller rotatably mounted in a pipe of the reactor having blades that generate a flow of fluid slurry through the pipe, a nosecone protruding in an upstream direction in front of the impeller blades that rotates along with the blades, and a plurality of stationary guide vanes connected to the housing upstream of the impeller blades and having free ends that are radially spaced apart from the nosecone. The leading edges of the stationary vanes are shaped to direct any stringy material into the radial gaps between the free ends of the stationary vanes and the rotating nose cone to be shredded and thus prevent fouling and clogging of the pump assembly when such stringy material is generated during the polymerization process.Type: ApplicationFiled: July 2, 2010Publication date: February 24, 2011Inventors: Robert G. DePierri, Norman F. Cook, III
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Publication number: 20100327096Abstract: A grinder includes a generally vertical, rotatable shaft having at least one set of cutter blades driven thereby and a fan assembly mounted on the shaft below the cutter blades in position to receive output therefrom. The fan assembly includes a fan disc secured to the shaft and rotatable therewith. A plurality of fan blades are secured to the fan disc in a generally radial orientation. Each fan blade includes a bottom flange secured to a top surface of the fan disc, a web extending upwardly from the bottom flange and a top flange extending outwardly from the web in a direction of rotation of the fan disc. The fan blades are preferably moveably mounted to the fan disc such that the angle of the fan blades relative to a true radial orientation can be adjusted.Type: ApplicationFiled: June 29, 2009Publication date: December 30, 2010Applicant: GREEN MACHINE SHREDDERS, INC.Inventor: Kyle T. Watts
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Publication number: 20100322756Abstract: A pump is provided including a cutter plate disposed at a pump inlet including a plurality of holes. Multiple embodiments provide that the pump includes a rotatable cutter blade disposed substantially adjacent to the cutter plate. Embodiments include those wherein the plurality of holes are angled in a direction of rotation of the cutter blade. In some embodiments, the cutter blade has at least one relief hole and at least one cutting edge. Additional embodiments include those wherein a ring extends outward from the pump inlet for channeling material toward the pump inlet in a substantially perpendicular approach with respect to the cutter plate.Type: ApplicationFiled: March 29, 2010Publication date: December 23, 2010Inventors: William Schmidt, P.E., Bryan Schilling, Charles Carroll
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Patent number: 7841827Abstract: A blade set for masserating effluent solids in a sewage pump is composed of a cutter ring and a wheel blade adapted to attach to an effluent water inlet at the lower base. Particularly, the cutter ring has an inner wall and multiple recesses defined on the inner wall to accept enhancing blocks made of tungsten carbide. Correspondingly, the wheel blade has multiple blade strips and each blade strip has a cutout defined at edge to combine with an enhancing corner also made of tungsten carbide. By having the structure made of tungsten carbide, the cutter ring and the wheel blade has excellent wearing resistance and less abrasion loss to keep the operational efficiency to masserate the effluent solids and to extend the lifespan of the sewage pump.Type: GrantFiled: October 2, 2007Date of Patent: November 30, 2010Inventor: Robert M. Keener
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Patent number: 7841826Abstract: A grinder pump assembly includes at least one grinder pump stage that has a diffuser and an impeller. The grinder pump assembly also includes a diffuser cap that includes cap contact surfaces. The impeller includes a plurality of upper vanes and lower vanes. The diffuser includes a plurality of lower contact surfaces, a plurality of diffuser vanes and plurality of upper contact surfaces. The upper vanes of the impeller are configured to rotate in proximity with the lower contact surfaces on the diffuser. The lower vanes of the impeller are configured to rotate in proximity with the cap contact surfaces. Multiple grinder pump stages may be used within a single grinder pump assembly.Type: GrantFiled: March 21, 2007Date of Patent: November 30, 2010Assignee: Wood Group ESP, Inc.Inventor: Harold Leon Phillips
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Patent number: 7811051Abstract: Pump having a cutting impeller (38), counter knives (40) associated therewith, and a pre-chopper (48) which is driven by a shaft portion (46) that projects axially from the cutting impeller (38), characterised in that the counter knives (40) carry a cutting edge (52) that extends in longitudinal direction of the shaft portion (46).Type: GrantFiled: February 16, 2006Date of Patent: October 12, 2010Assignee: Brinkmann Pumpen K.H. Brinkmann GmbH & Co. KGInventor: Peter Wagner
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Publication number: 20100143098Abstract: The invention refers to a pump assembly, and more specifically to a chopping pump assembly comprising a cutting wheel mounted on a drive shaft in coaxial and co-rotational relation with a pump wheel, and a cutting plate stationary mountable in a pump housing between the cutting wheel and the pump wheel, the cutting plate having perforations forming passages there through for a liquid to be transported by the pump wheel in rotation, the cutting wheel and cutting plate in co-operation providing a shearing interface effective for cutting solid matter which may be entrained in the liquid. An axial clearance between the cutting wheel and cutting plate is established at all times by eliminating an axial play in a threaded engagement between the cutting wheel and the drive shaft. The invention also refers to a method by which an operative shearing action is securable in the pump assembly.Type: ApplicationFiled: May 7, 2008Publication date: June 10, 2010Applicant: ITT Manufacturing Enterprises Inc.Inventor: Bengt Södergärd
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Patent number: 7712158Abstract: Disclosed herein is a non-clog shredder that is used to shred solid matter entrained in a non-homogenous liquid-solid feed. In one embodiment of the invention, the shredder is located at the bottom of a toilet bowl and is used to shred solid disposable products such as napkins and diapers that are discarded in the toilet bowl. The shredder comprises a generally cylindrical cup that is open at one end, with a circular end-cap at the other end. The end-cap has an axial opening that allows the feed to pass through the cup. In one embodiment of the invention, the opening has recesses and/or teeth on the periphery of the opening. An impeller disposed against the circular end plate creates suction for transfer of the waste through the shredder. A cutting blade on the impeller assembly projects axially through the opening in the end-cap.Type: GrantFiled: November 7, 2005Date of Patent: May 11, 2010Inventor: Vinod Kumar Mehta
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Publication number: 20100092276Abstract: A pump for chopping solid material in a liquid stream having a volute housing, a rotating cutter with at least one blade parallel to a rotational axis of the rotating cutter, an impeller arranged at an outer circumference of the rotating cutter, and a stationary cutter having at least one blade parallel to the rotational axis of the rotating cutter. The stationary cutter is concentric with the rotating cutter, and the stationary cutter, the rotating cutter and the impeller are all at least partially housed within the volute housing. Typically, the rotating cutter has a different number of blades than the stationary cutter. Optionally, the pump, further comprises an inspection cover that is removably attached to the pump, and has an opening large enough to remove the stationary cutter and the rotating cutter from the volute housing.Type: ApplicationFiled: September 30, 2009Publication date: April 15, 2010Inventors: John Cartwright, Eddie Cottrell, David Oswalt
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Patent number: 7695243Abstract: A hollow turbine airfoil includes a tip cap bounding an internal cooling circuit between opposite pressure and suction sidewalls. The tip cap includes an internal dome surrounding a dust hole, and the dome is inclined inwardly toward the airfoil root both transversely between the opposite sidewalls and chordally between opposite leading and trailing edges of the airfoil.Type: GrantFiled: July 27, 2006Date of Patent: April 13, 2010Assignee: General Electric CompanyInventors: Ching-Pang Lee, Tingfan Pang, Brian Alan Norton, Jan Christopher Schilling, Aspi Rustom Wadia
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Patent number: 7686574Abstract: A housing includes a major component. The major component has a planar section. The planar section has an aperture constituting an inlet. The major component has a generally cylindrical peripheral section. A tangential extension is provided. The aperture constitutes an outlet. The housing also includes a minor component. The minor component has a planar section. The planar section has an aperture. The aperture constitutes an outlet. A tangential extension is adapted to overlie the major component for creating a chamber. A rotatable assembly includes an annular plate. The annular plate has an aperture. Spaced impeller segments are provided. A propeller is also provided. The propeller has an axial bore. Propeller blades are provided. Openings are provided between the blades. The bore is adapted to receive a drive shaft of a motor. In this manner the propeller and the annular plate and the impeller segments are rotated.Type: GrantFiled: August 16, 2007Date of Patent: March 30, 2010Inventors: Frank L. Airosa, Brad D. Myrick
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Publication number: 20100028136Abstract: The disclosed solid waste pump is a chopper pump, and preferably a chopper pump having a small rated motor and a semi-open impeller design. Particularly, a chopper pump having an impeller, at least one pump-out vane, an end plate, and a back plate including at least one cutting rib is disclosed. The impeller includes a back shroud and cutting vanes sharpened on a first edge extending opposite the back shroud and fixed on a first surface of the back shroud. The at least one pump-out vane is preferably fixed to a second surface of the back shroud opposite the first surface, while the end plate includes a surface adjacent to and facing the first edge of the cutting vanes and at least one internal cutting rib fixed to the end plate surface for shearing operation in combination with the sharpened edge of the cutting vanes of the impeller.Type: ApplicationFiled: July 29, 2008Publication date: February 4, 2010Inventors: Glenn Robert Dorsch, Kent Harrison Keeran
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Publication number: 20100003124Abstract: A pump includes a cutting impeller (38) and a pre-chopper (50) driven by a shaft portion (46) that projects axially from the cutting impeller (38), with the pre-chopper (50) being surrounded by an intake port (22) of the pump, the intake port having, at least on a part of its length, in the vicinity of the pre-chopper, a non-circular internal cross-section.Type: ApplicationFiled: July 1, 2009Publication date: January 7, 2010Applicant: BRINKMANN PUMPEN K.H. BRINKMANN GMBH & CO. KGInventors: Peter Wagner, Dirk Wenderott
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Patent number: 7607884Abstract: A centrifugal pump with a mechanical seal cartridge is disclosed. The pump has a pump casing, a rotatable drive shaft extending into the casing from the rear side, and an open impeller mounted on the drive shaft, this impeller having radially extending vanes with leading and trailing edges. The seal cartridge is mounted in a back plate structure of the casing so as to seal a central seal chamber formed by the back plate structure and extending around the drive shaft. This seal chamber has a circumferential wall extending around at least a forward portion of the seal mechanism and spaced therefrom so as to form an open annular space for circulation of fluid which lubricates and cools the mechanical seal.Type: GrantFiled: July 10, 2006Date of Patent: October 27, 2009Assignee: Hayward Gordon LimitedInventor: Carlos Cohen
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Publication number: 20090232639Abstract: A wear plate for use in a centrifugal pump is structured with at least one cutting element positioned at the inner bore of the wear plate, the cutting element or elements being positioned to impact the cutting edge of the vanes of an impeller and oriented in a direction relative to the rotation of the impeller so that the wear plate cutting element or elements can capture the solids in a processed fluid and hold them in place until the solids can be cut by the impeller vane or vanes, the wear plate cutting elements further being structured to be self-sharpening.Type: ApplicationFiled: September 4, 2008Publication date: September 17, 2009Inventors: Kim M. Arnold, James Northrup, Kenneth Sessum, SR.
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Publication number: 20090169365Abstract: The invention relates to a pump for pumping contaminated liquid including solid matter, comprising a pump housing provided with a rotatable impeller (3) having at least one vane (9) and an impeller seat (4), the impeller seat (4) presenting at least one recess (13) in the top surface (11) thereof, a sheering/cutting action arising between an cutting edge (15) of said recess (13) and a lower edge (14) of the vane (9) as the impeller (3) rotates relative to the impeller seat (4). Furthermore, the pump also comprises means for guiding the solid matter towards said recess (13), the guiding means comprising at least one guide in and at least one projection (20), an upper surface (19) of the guide pin extending from a position contiguous to the most inner part of the vane (9) of the impeller (3) towards the impeller seat (4), and the projection (20) protruding from the impeller seat (4).Type: ApplicationFiled: June 5, 2006Publication date: July 2, 2009Applicant: ITT Manufacturing Enterprises Inc.Inventor: Patrik Andersson
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Publication number: 20090113661Abstract: To obtain a hand-held powered suction device, which secures a high suction performance by a lightweight fan while preventing a blade of the fan from being damaged or being broken due to a sucked object. Forming an air intake opening along a driving axis of a fan in a portable-type fan case and providing a fan protection member to be rotated at an upstream side in an air intake direction of the fan within the intake opening being attached so as to be integrally rotated with the driving axis, a shock absorbing surface that is perpendicular in an air intake direction of the intake opening is formed on the fan protection member.Type: ApplicationFiled: July 8, 2008Publication date: May 7, 2009Inventors: Yoshiki Nakayama, Masaki Takeda, Junichi Akaike
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Patent number: 7520454Abstract: The invention relates to a cutting tool pertaining to a centrifugal pump for liquids loaded with solids. Said cutting tool comprises a rotating cutting body comprising at least one opening forming a cutting edge and through which the liquid flows, the lateral surface of the cutting body facing the rotationally fixed opposite surface that also comprises at least one opening through which the liquid flows. The lateral surface of the cutting body, facing the opposite surface, is curved in a convex manner, and the opposite surface is curved in a correspondingly concave manner.Type: GrantFiled: January 11, 2005Date of Patent: April 21, 2009Assignee: WILO AGInventors: Manfred Zelder, Michael Müller
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Publication number: 20090092479Abstract: A pump having an axial impeller (40) with helical blades (38) for sucking liquid through an intake opening (38) formed at a bottom side of the axial impeller (40), in which the blades (38) are provided, at the bottom side of the axial impeller (40), with a first cutting edge (58) which, when the axial impeller (40) rotates, are in cutting relation with at least one second cutting edge (60) formed at the intake opening (36).Type: ApplicationFiled: November 11, 2005Publication date: April 9, 2009Applicant: BRINKMANN PUMPEN K.H. BRINKMANN GMBH & CO. KGInventor: Peter Wagner
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Patent number: 7510368Abstract: A screw-centrifugal pump (1) comprises a pump housing (3) having an inlet opening (3c) and also an impeller (2) arranged within the pump housing (3) and rotatable about an axis of rotation (2d) in a direction of rotation (4a). The impeller (2) has a spirally extending blade entry edge (2a) and a guide vane (5) projects into the interior space of the impeller (2) and is disposed in the region of the inlet opening (3c). A method of conveying a liquid permeated with solid additions using such a pump is also described and claimed.Type: GrantFiled: November 2, 2004Date of Patent: March 31, 2009Assignee: Frideco AGInventor: Martin Stahle
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Publication number: 20090067992Abstract: A sewage pump is to mount a blade set coaxially mounted between a water paddle disk and a first wheel blade within the blade chamber, wherein the blade set comprises a stationary annular blade base and a movable second wheel blade. The second wheel blade is within the annular blade base fixed to an inner wall of the blade chamber. Particularly, the stationary blade base and the second wheel blade respectively have blade sheets facing toward each other. When the sewage pump is driven by its motor, the water paddle disk, the first and second wheel blades are rotated to cause a suction force to drive precipitation flow into the blade chamber via the precipitation inlet. The first wheel blade cooperates with a gear ring to perform a first smashing stage and then the blade set performs a second smashing stage to improve the smashing efficiency of the sewage pump.Type: ApplicationFiled: September 6, 2007Publication date: March 12, 2009Inventor: Robert M. Keener
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Publication number: 20090061704Abstract: A device for cutting weeds carried by water inducted into a housing includes an intake, an outlet, an impeller for pumping water from the intake to the outlet as the impeller rotates about an axis, the impeller including a blade formed with a leading edge facing the intake, and a baffle secured against movement and including a cutting edge located adjacent the leading edge when the leading edge rotates to the location of the cutting edge.Type: ApplicationFiled: August 27, 2007Publication date: March 5, 2009Inventor: Yuting Rui
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Patent number: 7455251Abstract: A centrifugal pump of the chopper type is disclosed which is structured with a chopper plate and impeller that are configured with an open eye or “hubless” arrangement such that processing of solids through the pump does not result in clogging of solids at or near the center of the impeller, thereby producing a dead zone. Because the configuration of the chopper pump of the present invention avoids the development of a central dead zone or clogging of solids, and provides for flow of solids and fluid through the eye of the impeller, pump efficiencies are markedly improved.Type: GrantFiled: October 11, 2006Date of Patent: November 25, 2008Assignee: EnviroTech Pumpsystems, Inc.Inventors: Brandon R. Doering, James C. Harmon, James G. Shaw
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Publication number: 20080222799Abstract: A pumped shower draining device for a shower installation, comprises a housing having a waste water inlet and a waste water outlet, a pump element provided within the housing, a pump driving device for driving the pump element, and a variable-engagement clutch for providing variable driving engagement between the pump driving device and the pump element. An amount of engagement imparted by the in use clutch is determined by an amount of waste water flowing from a shower unit of the shower installation. Preferably, the clutch is self-regulating, so that the amount of engagement is determined by an amount of water in or at the clutch.Type: ApplicationFiled: March 12, 2008Publication date: September 18, 2008Inventors: Robert William Stimpson, Ian Felmeri
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Publication number: 20080152481Abstract: Pump having a cutting impeller (38), counter knives (40) associated therewith, and a pre-chopper (48) which is driven by a shaft portion (46) that projects axially from the cutting impeller (38), characterised in that the counter knives (40) carry a cutting edge (52) that extends in longitudinal direction of the shaft portion (46).Type: ApplicationFiled: February 16, 2006Publication date: June 26, 2008Applicant: BRINKMANN PUMPEN K.H. BRINKMANN GMBH & CO. KGInventor: Peter Wagner
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Publication number: 20080075581Abstract: A fan cover fastened to a cooling fan having a plurality of openings includes a fan cover body, a plurality of fasteners formed on the fan cover body and fastened into the openings, and a gripping portion formed on the fan cover body and extended outward, such that the cooling fan can be hot-plugged by gripping the gripping portion, without using any tool.Type: ApplicationFiled: September 22, 2006Publication date: March 27, 2008Applicant: Inventec CorporationInventor: Jui Lin Chen
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Publication number: 20080008577Abstract: A centrifugal pump with a mechanical seal cartridge is disclosed. The pump has a pump casing, a rotatable drive shaft extending into the casing from the rear side, and an open impeller mounted on the drive shaft, this impeller having radially extending vanes with leading and trailing edges. The seal cartridge is mounted in a back plate structure of the casing so as to seal a central seal chamber formed by the back plate structure and extending around the drive shaft. This seal chamber has a circumferential wall extending around at least a forward portion of the seal mechanism and spaced therefrom so as to form an open annular space for circulation of fluid which lubricates and cools the mechanical seal.Type: ApplicationFiled: July 10, 2006Publication date: January 10, 2008Inventor: Carlos Cohen
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Publication number: 20070264119Abstract: A fan cover integrated with a heat dissipating fan having a power line and a power line connector is disclosed. The fan cover includes a body combined with and covered on a side of the heat dissipating fan, and a fixing mount disposed on an outside region of the body. The fixing mount has a clip unit for clipping to the power line connector of the heat dissipating fan, allowing the power line connector to be detachably attached to the fixing mount. Therefore, the heat dissipating fan is detachable form the frame of the server in single step and overcome the drawbacks of the prior art.Type: ApplicationFiled: September 18, 2006Publication date: November 15, 2007Applicant: Inventec CorporationInventor: Linger Lin
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Patent number: 7234915Abstract: The invention concerns a sluice feeder comprising an inlet (1), an outlet (11), and a rotor (2), into which sluice feeder material to be fed from a first medium to a second medium sealed from the first medium is fed to the inlet (1). The inlet (1) is directed towards the centre portion of the rotor (2), the rotor (2) and a cooperating stator (7), respectively, show at least a radial opening (5, 8) each and are provided so that at least one pocket (9) is formed, which alternating opens and seals upon rotation of the rotor (2). The material is thrown radially outwards by the rotor (2) to the pocket (9) to finally be emptied from the pocket (9) to the outlet at the same time as the pocket (9) is sealed towards the inlet (1) by means of the stator (7).Type: GrantFiled: March 4, 2003Date of Patent: June 26, 2007Inventor: Lars Obitz
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Patent number: 7168915Abstract: Axial adjustment apparatus is provided in a centrifugal pump to effect adjustment of the impeller relative to adjacent pump elements. Specifically preferred is adjustment apparatus in a chopper pump that provides adjustment of the impeller relative to a chopper plate to facilitate continuous efficient cutting of solids by the pump. The adjustment apparatus may also include adjustment structure for providing axial adjustment between the impeller and a plate-like member positioned adjacent the drive side of the impeller to effect adjustment of cutting tolerances in cutting elements positioned between the impeller and plate-like member. The invention further includes a seal mechanism configured and positioned to retain the seal height of the seals throughout continuous adjustment of the impeller.Type: GrantFiled: July 20, 2004Date of Patent: January 30, 2007Assignee: Envirotech Pumpsystems, Inc.Inventors: Brandon R. Doering, James C. Harmon
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Patent number: 7159806Abstract: A cutting assembly for a grinder pump comprised of a rotary cutter rotatable against an opposing plate cutter. The cutting edges of the plate cutter include a plurality of V-slice cutting teeth, which create bridging spaces to pinch material which is being sucked in to ports and begin cutting along the V-slice and then for cut material to pass through and onward into the volute of the pump. The rotary cutter has a ground edge with a rake angle which shears the gathered material in cooperation with the cutting edges of the plate cutter. A grinder pump including the cutter assembly is also disclosed.Type: GrantFiled: January 18, 2005Date of Patent: January 9, 2007Inventor: Stephen T. Ritsema
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Patent number: 7134837Abstract: A line cutting device for use with a hydrodynamic propeller has a blade (5) fixed to a vessel having the propeller. Three rotating blades (22) extend from a hub fixed around the propeller's shaft. The fixed and rotating blades are arranged for line shearing action. Each of the rotating blades has four apertures (21) extending from front to back through the blade for passage of water therethrough towards a respective blade of the propeller. The apertures are arranged to alleviate cavitation on the propeller blades.Type: GrantFiled: August 6, 2002Date of Patent: November 14, 2006Inventor: Robin David Shaw
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Patent number: 7125221Abstract: An improved mechanism is provided for adjusting the clearance between the outer edges of impeller vanes of a centrifugal pump and the interior surface of an adjacent intake plate. The impeller having the vanes is mounted as an assembly to a back plate that can be secured to a casing or housing to which the intake plate is mounted. Threaded adjusters allow adjustment of the clearance between the impeller vanes and the intake plate. Additional modifications include a modified seal design to prevent material from clogging relatively rotatable seal components, a modified intake plate with a shallow recess to increase chopping effectiveness and pump efficiency, impeller vanes with a unique shape to achieve a high head, and a self-priming pump.Type: GrantFiled: April 5, 2002Date of Patent: October 24, 2006Assignee: Vaughan Co., Inc.Inventors: Glenn Dorsch, Kent H. Keeran, Arne E. Swenson
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Patent number: 7118327Abstract: A pump impeller and associated cutting elements are disclosed which are especially designed and positioned near the periphery of the impeller to reduce the size of entrained solids in a pumped fluid, or slurry, and to expel such solids from the impeller, drive shaft and associated sealing mechanisms.Type: GrantFiled: July 16, 2004Date of Patent: October 10, 2006Assignee: EnviroTech Pumpsystems, Inc.Inventors: Brandon R. Doering, James C. Harmon
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Patent number: 7114925Abstract: A pump impeller for use in industrial pumps of the centrifugal type is disclosed in which the vanes of the pump impeller are particularly configured to maintain pumping efficiency as the vane wears over continuous use or operation of the pump. The impeller vane is configured to continuously present an aggressive cutting surface at the leading edge of the vane even though the vane may become degraded and worn through continuous use.Type: GrantFiled: June 30, 2004Date of Patent: October 3, 2006Assignee: EnviroTech Pumpsystems, Inc.Inventor: James G. Shaw
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Patent number: 7080797Abstract: A centrifugal pump of the chopper type is disclosed which is structured with a chopper plate and impeller that are configured with an open eye or “hubless” arrangement such that processing of solids through the pump does not result in clogging of solids at or near the center of the impeller, thereby producing a dead zone. Because the configuration of the chopper pump of the present invention avoids the development of a central dead zone or clogging of solids, and provides for flow of solids and fluid through the eye of the impeller, pump efficiencies are markedly improved.Type: GrantFiled: June 25, 2004Date of Patent: July 25, 2006Assignee: EnviroTech Pumpsystems, Inc.Inventors: Brandon R. Doering, James C. Harmon, James G. Shaw
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Patent number: 7018171Abstract: A blower having an enclosure having side walls defining an internal chamber, an open end comprising a first inlet, a second inlet and an outlet. A flow separator plate extends across the internal chamber between the side walls defining a first scroll duct and a second scroll duct. The first scroll duct is in flow communication with the first inlet and the outlet, while the second scroll duct is in flow communication with the second inlet and the outlet. A blower wheel is rotatably mounted in the enclosure through an opening in the separator plate having a first wheel portion disposed in the first scroll duct and a second wheel portion disposed in the second scroll duct.Type: GrantFiled: January 23, 2004Date of Patent: March 28, 2006Assignee: Airex Inc.Inventors: Chun Wang, Enzo Iantorno
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Patent number: 6969018Abstract: A sanitary shredder includes at least a channel feeding water into a caisson (1), an electric motor whereof the axis has at its end a rotor pump (5) with blades (6), and shredding elements opposite the shredding chamber (3) provided with an inlet. The front surface (5a) of the rotor (5) is substantially planar and comprises a plurality of passages for water arranged substantially radially and emerging on the circumference of the rotor (5), each passage of the rotor (5) is extended by a channel delimited by the helical blades (6), the rotor (5) is housed in the pump body (8), its front surface (5a) being substantially in the plane of the pump body opening, shredding members (9) being arranged in axial projection relative to said front surface (5a).Type: GrantFiled: July 24, 2001Date of Patent: November 29, 2005Assignee: Societe Etex de Recherches TechniquesInventors: Santiago Gimenez Ibanez, Jean-Claude Pollet, Juan José Perez Salas
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Patent number: 6951445Abstract: Apparatus for use with a slurry pump, including a stationary part which includes a processing chamber having an inner side wall and a central axis, an inlet and an outlet to and from the processing chamber and a rotatable part at least partially disposed within the processing chamber and including an outer wall which is spaced from the inner wall of the processing chamber.Type: GrantFiled: June 7, 2002Date of Patent: October 4, 2005Assignee: Weir Warman LtdInventor: Kevin Edward Burgess
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Patent number: 6916152Abstract: A centrifugal sewage pump with two impellers includes a motor, a first impeller housing, a second impeller housing and a transfer tube. The first impeller housing is attached on one end of the motor and the second impeller housing is attached to the other end of the motor. A first impeller is attached to one end of a motor shaft of the motor and a second impeller is attached to the other motor shaft. Sewage is drawn into the first impeller chamber and pushed into the transfer tube with the first impeller. Sewage from the transfer tube enters the second impeller chamber through a transfer cavity and is pushed out with the second impeller. In a second embodiment, a grinder wheel and shredder ring are added to an inlet of the first impeller housing. A discharge head height is nearly twice that of a single impeller pump.Type: GrantFiled: June 13, 2003Date of Patent: July 12, 2005Inventor: Robert M. Keener
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Patent number: 6893212Abstract: A fan having an internal rotor motor with a rapid fixing device for a fan wheel, for both centrifugal and axial fans, including a casing (12) containing an electric motor with an internal rotor (13) connected to at least one fan wheel (14, 14?) and being enclosed by a protection grid (15) wherein a first coupling element (17, 17?), attached to one end of a motor shaft (16) of the electric motor (13) and a second coupling element (23, 23?) in one portion of at least one fan wheel (14, 14?), wherein the first and second coupling elements (17, 17?, 23, 23?) are complementary to each other and have a polygonal type section, and are fixed by means of reciprocal blocking means (26, 27, 29).Type: GrantFiled: February 20, 2003Date of Patent: May 17, 2005Assignee: Faber S.p.A.Inventor: Alvaro Galassi
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Publication number: 20040253094Abstract: A centrifugal sewage pump with two impellers includes a motor, a first impeller housing, a second impeller housing and a transfer tube. The first impeller housing is attached on one end of the motor and the second impeller housing is attached to the other end of the motor. A first impeller is attached to one end of a motor shaft of the motor and a second impeller is attached to the other motor shaft. Sewage is drawn into the first impeller chamber and pushed into the transfer tube with the first impeller. Sewage from the transfer tube enters the second impeller chamber through a transfer cavity and is pushed out with the second impeller. In a second embodiment, a grinder wheel and shredder ring are added to an inlet of the first impeller housing. A discharge head height is nearly twice that of a single impeller pump.Type: ApplicationFiled: June 13, 2003Publication date: December 16, 2004Inventor: Robert M. Keener
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Publication number: 20040234370Abstract: An impeller assembly, chopping pump, method of operation, and method of converting an existing pump into the chopping pump. The chopping pump includes a pump housing for enclosing a pumping chamber, the pump housing having an inlet flange through which a fluid is to be introduced into the pumping chamber at a first pressure, and an outlet flange through which the fluid is to be discharged from the pumping chamber at a second pressure, the pump further including a rotatable shaft that is to be operatively coupled to a pump driving device. The impeller assembly includes a cutter bar to be coupled to the pump housing adjacent to the inlet flange, and an impeller for imparting a centrifugal force on fluid entering the pumping chamber, the impeller being mountable on the shaft at a distance from the cutter bar when the cutter bar is coupled to the pump housing to form a clearance between the impeller and the cutter bar.Type: ApplicationFiled: September 26, 2003Publication date: November 25, 2004Inventors: Mark Simakaski, Edward Belcak
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Patent number: 6814539Abstract: One or more particle arrestors are mounted in a curved radial flow portion of a gas turbine starter annular flow passage, between a fluid inlet and a fluid outlet. The one or more arrestor rings block line of sight paths between the turbine wheel and the annular flow passage outlet. Thus, the one or more arrestor rings substantially inhibit relatively high energy particles from exiting the turbine housing, thus substantially inhibiting collateral damage to surrounding equipment and structure.Type: GrantFiled: December 10, 2002Date of Patent: November 9, 2004Assignee: Honeywell International, Inc.Inventors: Gary A. Farnsworth, Glenn H. Lane, Douglas C. Smith
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Patent number: 6799944Abstract: According to the invention the pump impeller comprises a hub (4) having one or several vanes swept backwards within a pump housing (1). The latter is provided with one or several relief grooves (8) on the inside of the pump housing wall. One or several radially directed scraping apparatus (10) are attached to the pump housing creating narrow slots at the leading edges (6) of the impeller vanes and causing pollutants on said edges to be fed into the grooves (8).Type: GrantFiled: February 25, 2003Date of Patent: October 5, 2004Assignee: ITT Manufacturing Enterprises, Inc.Inventor: Patrik Andersson
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Publication number: 20040191057Abstract: A cooling fan with dust-filtering function is provided. The cooling fan at least comprises a fan base, a fan module, a filter frame and a filtering unit. The fan bas has an air inlet and an air outlet. The fan module is set up within the fan base. The filter frame is detachably attached to the fan base and the filtering unit is set up within the filter frame such that the filtering unit covers the air inlet. A user is free to remove the filter frame along with the filtering unit for a cleanup and assemble the filter frame onto the fan base thereafter. Hence, the filtering unit can be cleaned and reused to provide the cooling fan with a constant cooling capacity and a longer working life.Type: ApplicationFiled: August 22, 2003Publication date: September 30, 2004Inventors: Nick Lee, Arthur Shen
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Patent number: 6790016Abstract: A motor and its blade unit include a blade unit made of a conical fundamental body and a plurality of blades formed around the surface of the conical fundamental body. The blades of the blade unit are multi-sectioned ones of different sizes. These blades increase water flowing speed with help of the centrifugal force produced by rotating of the blade unit, and quickly guide water to flow along the outer wall of a motor and out of the motor, not to flow reversely back to a shaft. At the same time these blades can cut impurities in water preventing the motor from clogged by impurities, increasing water flowing-out speed, lowering motor load and electricity consumption and saving motor horsepower to prolong its service life, and also possible to be combined with various types of motors for extensive use.Type: GrantFiled: February 4, 2002Date of Patent: September 14, 2004Inventor: Ching-Yuan Chiang
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Patent number: 6746206Abstract: A centrifugal pump wherein a threaded ring is secured in its position by way of a pressure body which presses it against the axial abutment of a pump shaft and which is screwed axially to the end of the pump shaft. The threaded ring is seated loosely on the pump shaft and by a thread which is provided in a front hub region of the pump impeller and into which the thread of the threaded ring is screwed.Type: GrantFiled: September 19, 2002Date of Patent: June 8, 2004Assignee: Grundfos A/SInventors: Steffen Madsen, Peter Lindberg