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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 8128345 | Centrifugal impeller/propeller pump system 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... | 03/06/2012 |
| 8109714 | Sewage pump 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 t... | 02/07/2012 |
| 8105017 | Centrifugal chopper pump with impeller assembly 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... | 01/31/2012 |
| 7967553 | Pump with cutting impeller 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 ax... | 06/28/2011 |
| 7841827 | Blade set for masserating effluent water in a sewage pump 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 wal... | 11/30/2010 |
| 7841826 | Slag reduction pump 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 dif... | 11/30/2010 |
| 7811051 | Pump with cutting impeller and pre-chopper 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 k... | 10/12/2010 |
| 7695243 | Dust hole dome blade 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 transverse... | 04/13/2010 |
| 7686574 | Centrifugal impeller/propeller pump system 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... | 03/30/2010 |
| 7607884 | Centrifugal pump with mechanical seal arrangement 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 le... | 10/27/2009 |
| 7510368 | Screw-centrifugal pump 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 o... | 03/31/2009 |
| 7275592 | Oil well pump apparatus An oil well pumping apparatus for pumping oil from a well to a wellhead provides a tool body that is sized and shaped to be lowered into the production tubing string of the oil well. A working fluid is provided that can be pumped into the production tubing. A prime ... | 10/02/2007 |
| 7241117 | Motor shaft assembly and method A method for assembling a motor shaft with a bearing, a motor housing, and an impeller is disclosed. A motor shaft extension is used to retain the impeller axially on the motor shaft and allows the motor shaft to drive an additional component, such as an impeller, l... | 07/10/2007 |
| 7234915 | Sluice feeder 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 ... | 06/26/2007 |
| 7234657 | Pump impeller and chopper plate for a centrifugal pump 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 ne... | 06/26/2007 |
| 7168915 | Apparatus for axial adjustment of chopper pump clearances 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 plat... | 01/30/2007 |
| 7159806 | Cutter assembly for a grinder pump 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... | 01/09/2007 |
| 7134837 | Cavitation alleviation and line cutting device 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 she... | 11/14/2006 |
| 7125221 | Centrifugal pump improvements 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 se... | 10/24/2006 |
| 7118327 | Impeller and cutting elements for centrifugal chopper pumps 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... | 10/10/2006 |
| 7114925 | Impeller vane configuration for a centrifugal pump 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 c... | 10/03/2006 |
| 7086473 | Submersible pumping system with sealing device A submersible pumping system includes a pump assembly that is connected to a motor assembly. The pump assembly includes a pump intake having an intake hole, a pump housing connected to the pump intake and a pump discharge head connected to the pump housing. An intak... | 08/08/2006 |
| 7080797 | Pump impeller and chopper plate for a centrifugal pump 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 ne... | 07/25/2006 |
| 7018171 | Blower with double inlet wheel 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 seco... | 03/28/2006 |
| 6969018 | Sanitary shredder 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 ... | 11/29/2005 |
| 6951445 | Apparatus for use in slurry pumps 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 ... | 10/04/2005 |
| 6921242 | Centrifugal slurry pump An apparatus and method for a slurry pump having improved erosion characteristics. The pump comprises a rotatable impeller having at least one impeller vane, an impeller shroud having an inlet for conveying slurry to the impeller and an outlet for discharging slurry... | 07/26/2005 |
| 6916152 | Centrifugal sewage pumps with two impellers 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... | 07/12/2005 |
| 6893212 | Fan having an internal rotor motor including a rapid fixing device for a fan wheel 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′... | 05/17/2005 |
| 6814539 | High energy particle arrestor for air turbine starters 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 flo... | 11/09/2004 |
| 6799944 | Rotary pump for pumping fluids, mainly sewage water 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 ... | 10/05/2004 |
| 6790016 | Motor and its blade unit 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 wa... | 09/14/2004 |
| 6746206 | Centrifugal pump 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 sha... | 06/08/2004 |
| 6629818 | Impeller for use with portable blower/vacuums An impeller for generating an air flow, for use in a device such as a blower/vacuum, the impeller having a hub structure for mounting the impeller on a rotatable shaft of the blower/vac and a plurality of air-flow generating vanes coupled to the hub struc... | 10/07/2003 |
| 6533541 | High energy particle arrestor for air turbine starters One or more particle arrestor rings are mounted in a curved radial flow portion of a gas turbine annular flow passage. The arrestor rings block line of sight paths between the turbine wheel and the annular flow passage outlet. Thus, the arrestor rings sub... | 03/18/2003 |
| 6471467 | Grinding device for a drain pump A grinding device for a drain pump on a dishwasher appliance includes moving elements that turn integrally with the impeller (5) of the pump (4) and fixed elements joined to the pump hydraulic body (2). The grinding is carried out by the combination of a ... | 10/29/2002 |
| 6464454 | Centrifugal pump A centrifugal pump pumps fluid containing large or long objects of solid material. Solid parts cause problems with centrifugal pumps in that they both stick to the edge of the vanes of the pump wheel and get in between the pump wheel and the housing and s... | 10/15/2002 |
| 6447245 | Rotodynamic pump A rotodynamic pump comprising a centrifugal impeller (11) provided within a volute body (7) and an emulsifier (17) provided in the region of an inlet of the volute body and rotatable with the centrifugal impeller for emulsifying material to be pumped.... | 09/10/2002 |
| 6406635 | Machine tool coolant system including a pump with chopping mechanism at inlet A coolant supply and recycle system and method for cleaning used machine tool coolant and returning it to the machine tools for reuse. A tank receives used coolant containing metal chips from one or more machine tools. A pump is in communication with the ... | 06/18/2002 |
| 6406255 | Apparatus and method for handling waste C-I-P II An apparatus for handing a waste material is disclosed. Generally, the apparatus comprises a pump mounted within a container. The container has disposed thereon a rail member. The apparatus also contains a trolley mounted on the rail. The trolley has oper... | 06/18/2002 |
