Did You Know...
...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7381036 | Motor-pump unit A motor-pump unit is provided that has at least two internal gearwheel pumps axially aligned that are driven off of the rotor of the electric motor. The rotor of the electric motor is U-shaped and is concentrically disposed about the pump. The web of the U-shape is ... | 06/03/2008 |
| 7367787 | Pumping unit for a liquid medium A pumping unit is provided with a pump that is partially disposed in a stator of an electric motor. The rotor is at an opposite end from the pump and is connected to the pump shaft to drive it for fluid flow. The pump shaft can be positioned in a central bore of the... | 05/06/2008 |
| 7314352 | Electric pump An electric pump comprises a case in which a core being enwound by a coil is embedded, a permanent magnet formed in a cylindrical shape, having a central axis being identical to that of the core, and positioned so as to face an inner peripheral side of the core, an ... | 01/01/2008 |
| 7235894 | Integrated fluid power conversion system A fluid power conversion apparatus serving fluid pumping and/or power-generation functions, comprising: an impeller having an impeller hub and a periphery; a housing around the impeller; a diffusor having (a) an outer wall attached to the housing, (b) a diffusor hub... | 06/26/2007 |
| 7230359 | Electric motor with poles shaped to minimize cogging torque An electric motor has a rotor (36) and a stator (28) having a lamination stack formed with slots (126). The slots have a predetermined slot pitch (τs), and a multi-phase stator winding is arranged in them. The rotor (36) has salient pole... | 06/12/2007 |
| 7229258 | Streamlined unobstructed one-pass axial-flow pump A blood pump has an impeller rotatably disposed and magnetically suspended within a cavity of a stator by a plurality of magnetic bearings (passive permanent and active electromagnetic) having impeller magnets on the impeller and stator magnets or coils/poles on the... | 06/12/2007 |
| 7200198 | Recirculating target and method for producing radionuclide An apparatus for producing a radionuclide includes a target chamber, a particle beam source operatively aligned with the target chamber, and a regenerative turbine pump for circulating a target fluid through the target chamber via first and second liquid transports.... | 04/03/2007 |
| 7131825 | Spindle-motor driven pump system The present invention is a compact pump that is powered by a brushless DC spindle-motor, as used in disk drives and CD-ROM drives. A hard drive type spindle-motor is a brushless DC motor that is highly balanced, very reliable, available at low cost, and is capable o... | 11/07/2006 |
| 7118356 | Fluid pump with a tubular driver body capable of selective axial expansion and contraction A fluid pump for pumping fluid. The fluid pump includes a driver having a substantially tubular shaped body defining a body axis and, a number of elements circumferentially spaced around the body. Each element is responsive to a signal to so as cause a corresponding... | 10/10/2006 |
| 7091643 | Polyphase electric motor An electric motor has a stator (28) and a rotor (36′) separated therefrom by an air gap (39). The rotor has a plurality of salient poles with pole shoes (260A) facing toward the air gap, and a yoke (200). The pole shoes serve to ... | 08/15/2006 |
| 7086843 | Cooling fan hub assembly A hub assembly includes an axle having one end mounted fittingly in a metal socket member. A hub body includes a cylindrical wall formed integrally with a base wall and extending uprightly from an inner surface of the base wall, and a coupling tube formed integrally... | 08/08/2006 |
| 7074018 | Direct drive linear flow blood pump A ventricular assistive device (VAD) based on a progressive cavity pump includes a pump housing having an inlet and an outlet, a pump stator contained within the pump housing, a pump rotor rotatably disposed within the pump stator, a motor including a motor rotor co... | 07/11/2006 |
| 7066718 | Liquid ring compressor The invention relates to a liquid ring compressor and/or pump, comprising a rotating compressor casing (1), a shaft journal (10) eccentrically located relative to the compressor casing's axis of rotation, with a surrounding bearing (15). One or ... | 06/27/2006 |
| 7011508 | Micro paddle wheel pump for precise pumping, mixing, dispensing, and valving of blood and reagents An apparatus and method for making a microscopic paddle wheel coupled inductively by an external electromagnet and used for valving and active pumping so that the actual pumping mechanism is completely isolated from the electromagnetic driver. The paddle wheel is in... | 03/14/2006 |
| 6946766 | Permanent magnet machine An interior permanent magnet machine including a rotor stack defining at least two adjacent magnet retention slots and a plurality of permanent magnets positioned within the interior of the rotor, wherein the radial thickness of the rotor that is above a given magne... | 09/20/2005 |
| 6919663 | Internal rotor motor A low-ripple multi-phase internal rotor motor has a slotted stator (28) separated by an air gap (39) from a central rotor (36). The rotor has a plurality of permanent magnets (214), preferably neodymium-boron, arranged in pockets (204 | 07/19/2005 |
| 6896492 | Magnetically driven air moving apparatus, with magnetically tipped fan blades and a single field coil and core An improved air moving device that is scalable for use in a variety of applications requiring different fan sizes. The fan includes a number of fan blades, each having a discrete magnet mounted thereon. The orientation of each magnet is such that the direction of th... | 05/24/2005 |
| 6884043 | Fluid circulation path for motor pump A fluid pump includes a pump head having an inlet for receiving fluid at a first pressure and an outlet for outputting fluid at a second pressure greater than the first pressure. Pressurized fluid is directed through a first passage to the outlet without the pressur... | 04/26/2005 |
| 6585498 | Motor-pump unit with pump shaft pinion enmeshed with motor rotor A motor-pump unit including an electric motor and a pump. The pump is concentrically surrounded by the rotor/stator of the motor. The rotor of the electric motor is U-shaped, viewed in an axial section. The cross-piece of the "U", in the region of the com... | 07/01/2003 |
| 6554584 | Inline type pump An inline type pump in which a rotor having an axial flow vane is arranged inside the cylindrical stator. The fluid is discharged from the discharging port after a rotating kinetic energy of the fluid transferred by the axial flow vane toward the discharg... | 04/29/2003 |
| 6527522 | Heat dissipation fan structure A heat dissipation fan structure includes a base plate provided with an air outlet which is provided with a bottom plate. The bottom plate is provided with a drive circuit control member. The base plate is provided with a plurality of poles of an even num... | 03/04/2003 |
| 6527521 | Magnetically driven axial-flow pump A magnetically driven, axial flow pump comprises an electromagnetic unit arranged about the periphery of a pipe. A cylindrical rotor is accommodated within the pipe and is equipped with permanent magnets mounted on the periphery. A spiral, hollow vane is ... | 03/04/2003 |
| 6499966 | Motor driven pump A motor driven pump comprises a motor stator (30), a motor rotor (10) operable to rotate around the outside of the stator (30) and a pump mechanism (40, 50) driven by the motor rotor (10) and disposed at least partly inside the motor stator (30).... | 12/31/2002 |
| 6386838 | Combustion engine A reciprocating rotating engine having a combustion chamber and a pumping chamber is provided with two sets of free pistons and pumps vanes each set having two pistons and two pump vanes. The two sets of pistons and pump vanes define four separate combust... | 05/14/2002 |
| 6386839 | High performance radiator fan A high performance radiator fan includes an axial fan and a centrifugal fan. The axial fan has a plurality of arched-shaped blades located between a protrusive circular hub and a closed motor shell for drawing airflow from the upper end of the axial fan t... | 05/14/2002 |
| 6270322 | Internal combustion engine driven hydraulic pump A reciprocating rotating engine having a combustion chamber and a pumping chamber is provided with two sets of free pistons and pumps vanes each set having two pistons and two pump vanes. The two sets of pistons and pump vanes define four separate combust... | 08/07/2001 |
| 6234767 | Rotor having permanent magnet and mechanism for cooling the same A laminating a plurality of permanent magnets embedded in storage pores, characterized in that each permanent magnet is inserted in each of said storage pore so as to form gaps at the both ends of the storage pore of the field core, thereby to form air pa... | 05/22/2001 |
| 6193473 | Direct drive compressor assembly with switched reluctance motor drive A centrifugal compressor assembly, especially one having two or more stages, has a first compressor casing having a fluid inlet and a fluid outlet and a first impeller rotatable within the first compressor casing. A second compressor casing provided havin... | 02/27/2001 |
| 6056518 | Fluid pump A fluid pump includes a housing having a passage therethrough with an inlet and an outlet. An impeller is positioned within the housing and includes an impeller axis, an inlet side and an outlet side. The impeller is axially supported only at the outlet s... | 05/02/2000 |
| 5938412 | Blood pump having rotor with internal bore for fluid flow A pump for transferring fragile and aggressive fluids such as human blood and comprising a pumping chamber along with a fluid inlet port disposed on the chamber, and one or more outlet ports arranged transversely and medially of the inlet ports. A shroude... | 08/17/1999 |
| 5484266 | High speed electrically driven axial-flow pump and boat driven thereby An axial-flow pump combined with an electric motor coaxially arranged therearound. The rotor (1) and stator (2) are common to both the electric motor and the pump. The rotor comprises a central tubular portion (11) defining a central channel (14) with a w... | 01/16/1996 |
| 5332377 | Compressor with oversized blade A fluid compressor comprises a cylinder, a cylindrical piston eccentrically disposed inside the cylinder so that the periphery of the piston is partly in contact with the inner face of the cylinder, the piston being movable relative to the cylinder, a spi... | 07/26/1994 |
| 5316449 | Motor-driven pump with reaction turbine The invention relates to motor-driven pumps (1) with turbine, driven by a fluid at high pressure, and more specially intended for the pumping of liquids and of laden liquids. The motor-driven pump (1) according to the invention comprises a rotating sleeve... | 05/31/1994 |
| 5158440 | Integrated centrifugal pump and motor An integrated centrifugal pump and motor is provided by an impeller disk which contains permanent magnets and functions as the rotor for a brushless DC motor. The rotor is supported by non-contacting radial bearings and is hydrodynamically balanced agains... | 10/27/1992 |
| 4913631 | Turbine-driven rotary pump The invention relates to a motor-driven pump intended for the pumping of liquids and driven by a pressurized motive fluid. The motor-driven pump (1) has a rotary sleeve (12) mounted in line between two stationary connections (8, 10). Mounted on the periph... | 04/03/1990 |
| 4639202 | Gerotor device with dual valving plates Apparatus responsive to fluid pressures and capable of providing fluid under pressure to provide a unit which may selectively be used as a fluid motor or a fluid driven motor pump unit depending upon fluid directing and control structures and with minimal... | 01/27/1987 |
| 4526517 | Circular centrifugal pump with arcuate input and output sections In a centrifugal pump, a pumping section comprising a circular conduit has an input section subtending an arc on the circle. A plurality of channels connect the input section to an input conduit subtending an arc of a circle smaller than and concentric wi... | 07/02/1985 |
| 4504196 | Rotary turboengine and supercharger A fluid driven turbine having a stator member and a turbine member rotatable on an axis and supporting turbine blades and with a fluid compression section is described. The fluid compression section is provided along the axis of rotation of and inside the... | 03/12/1985 |
| 4008983 | Tip turbine inflating device with motor-actuated closure at inlet A tip turbine type fan particularly adapted for use to effect a substantially instantaneous inflation of an emergency lifesaving device such as an escape slide or life raft. It features a housing having an improved unitized construction which defines an a... | 02/22/1977 |
| 3977816 | Mechanically driven compressor for air conditioning devices, particularly in vehicles A mechanically-driven hermetically sealed compressor for air-conditioning devices where the compressor is driven by a magnetic torque transmission arrangement which has a pole ring disposed outside the hermetically sealed compressor housing and one inside... | 08/31/1976 |
