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| Number | Title | Issue Date |
| 7407372 | Progressing cavity pump or motor A progressing cavity pump or a motor includes, in one embodiment, an outer tube 12, an inner tube 14, and a plurality of apertures 16. A pair of annular seal glands 18 seal the stator material to the outer tube. The stator material is inj... | 08/05/2008 |
| 7316548 | Stator for an eccentric screw pump or an eccentric worm motor operating on the Moineau principle The invention relates to a stator for an eccentric screw pump or an eccentric worm motor having a stator, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space, in the shape of a double or multiple spiral, ... | 01/08/2008 |
| 7293955 | Supersonic gas compressor A gas compressor based on the use of a driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary sidewall. I... | 11/13/2007 |
| 7264439 | Evacuating device A device (1), for evacuating a chamber to pressures in the high vacuum range includes a suction-side vacuum pump (2) and an atmospheric-pressure-side vacuum pump (3). The suction-side vacuum pump (2) is a mechanical kinetic vacuum pump wi... | 09/04/2007 |
| 7240682 | Washing fluid pump The invention concerns a washing fluid pump (1) for windows and/or headlamp cleaning installations on motor vehicles including at least one motor, at least one pump housing (2) with at least one impeller (11) arranged therein, at least one intak... | 07/10/2007 |
| 7165933 | Screw pump for transporting emulsions susceptible to mechanical handling A screw pump for transporting a viscous product is described comprising a cylindrical housing connected to a removable bottom piece in one end and a removable cap in the opposite end, a rotor having one or more screw blades connected to a driving motor, an inlet and... | 01/23/2007 |
| 7131827 | Stator for an eccentric screw pump or an eccentric worm motor operating on the moineau principle The invention relates to a stator for an eccentric screw pump or an eccentric worm motor, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space or cavity, in the shape of a double or multiple spiral, for ac... | 11/07/2006 |
| 7018170 | Ribbon drive pumping apparatus and method with added fluid A ribbon drive pumping apparatus and method for substantially incompressible fluids, such as liquids, is disclosed. The pump has an extended tube having an intake at a first end and an outlet at a second end. A ribbon formed of helical coils is mounted in the tube f... | 03/28/2006 |
| 6960063 | Vortex attractor without a 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... | 11/01/2005 |
| 6835043 | Hydraulic turbine feed tank An installation comprising a turbine equipped with a wheel rotatable about an axis (X-X′), and a tank feeding the turbine. The feed tank having, projecting on a plane globally perpendicular to the axis (X-X′), an external spiral shape. The feed tank forms a heli... | 12/28/2004 |
| 6626638 | Ribbon drive power generation for variable flow conditions The ribbon drive generation apparatus is comprised of a ribbon-like curved shape, composed either of metal or other suitable material, attached to a central axle with the complete apparatus being contained in a tube having a constant diameter for the leng... | 09/30/2003 |
| 6612804 | Swirling compressor A swirling compressor comprises a number of swirling tubes and a motor, each swirling tube has a fixture at a center portion with a flange bulging out from one side and a hole at the other end of the center portion opposing the flange, an aperture is form... | 09/02/2003 |
| 6554799 | Biological precision screw pump The present invention provides a suction and injection pump capable of transferring a sufficient amount of viscous liquid even with a very thin suction and injection pipe, thereby enabling suction or injection of a viscous liquid while minimizing invasion... | 04/29/2003 |
| 6419444 | Screw groove type vacuum pump, complex vacuum pump and vacuum pump system A screw groove-type pump has a rotor member mounted for undergoing rotation, a stator member arranged so as to be coaxial with the rotor member and having a peripheral wall disposed opposite to and spaced-apart from a circumferential wall of the rotor mem... | 07/16/2002 |
| 6375413 | Vacuum pumps A vacuum pump for pumping gas from a pump inlet to a pump outlet, comprising a rotor and a stator body in which the rotor is adapted for rotation and including at least two molecular drag stages each comprising adjacent stationary and rotating Holweck cyl... | 04/23/2002 |
| 6367247 | Air engine Apparatus for supplying high pressure gas to an engine, to operate the engine, including in combination a gas pressurizer having a low gas pressure inlet to receive inlet gas, as for example discharge gas from the engine, and a high gas pressure outlet to... | 04/09/2002 |
| 6357997 | Ribbon drive power generation apparatus and method A ribbon drive power generation system and method is disclosed. The system is equipped with an extended tube having an intake at a first end and an outlet at a second end. A ribbon formed of helical coils is mounted in the tube for rotation and the freque... | 03/19/2002 |
| 6273673 | Ball turbine A turbine method and apparatus having a stator and rotor mounted for rotation relative to the stator. The stator has at least one groove facing the rotor and the rotor has at least one groove facing the stator, the direction of each rotor groove intersect... | 08/14/2001 |
| 6227796 | Conical stacked-disk impeller for viscous liquids One or more improved pump impellers are provided and are rotationally supported in a pump having one or more stages. The improved impeller comprises a fluid induction core of flow passages spiraling axially about the impellers rotational axis and a stack ... | 05/08/2001 |
| 6013140 | Laser hardening of screw forms A harden screw form and methods of making same for use with, for example, positive displacement rotary axial screw pumps are disclosed. The methods include the use of a CNC machine with a laser and a special, newly developed optic for selectively hardenin... | 01/11/2000 |
| 5893702 | Gas friction pump A gas friction pump including a rotor located in the pump housing and formed of a plurality of coaxial first cylindrical elements, and a stator located in the housing and formed of a plurality of second cylindrical elements coaxial with the first cylindri... | 04/13/1999 |
| 5885057 | Method and apparatus for using nucleate steam bubbles in steam and/or gas compression A turbine apparatus having a stator and a rotor mounted for rotation relative to the stator. The stator has at least one groove facing the rotor and the rotor has at least one groove facing the stator, the direction of each of the rotor grooves intersecti... | 03/23/1999 |
| 5878808 | Rotating heat exchanger A rotating heat exchanger (10) has a first air turbine (16) connected to a first end of an axle (20). The second end of the axle (20) is connected to a second air turbine (18). A heat pipe (30, 40, 42, 44) extends from the first air turbine (16) to the se... | 03/09/1999 |
| 5694771 | Drive mechanism The variable speed drive mechanism includes an input member (17) and an output member (18), each rotatable within a housing (11) filled with fluid. The input and output members each have helical vanes (26) that are in a close running fit with sleeves (21,... | 12/09/1997 |
| 5632597 | Thread groove type vacuum pump A thread groove type vacuum pump in which the gap between a rotor and a stator is not subjected to any influence of the rotor temperature and thus the pumping performance does not deteriorate during plasma combustion in a nuclear fusion reactor. The threa... | 05/27/1997 |
| 5312224 | Conical logarithmic spiral viscosity pump A rotary viscosity pump is provided that has a housing and an impeller. The housing has a conical chamber with an outlet at a narrow end of the chamber. The impeller has a conical section with a logarithmic spiral groove along its exterior. The spacing be... | 05/17/1994 |
| 5297925 | Water column floating pump This new invention, the water column floating pump, is a fluid pump which uses a rotationally symmetric container to pump fluid from an inlet reservoir to the outlet end of the rotationally symmetric container. The rotationally symmetric container is adap... | 03/29/1994 |
| 5281086 | Pump for viscous fluids The invention is directed to a pump for pumping a viscous fluid. The pump includes a stator body and a rotor body rotatably mounted in the stator body so as to be coaxial therewith. The stator body has a wall structure having a spiral slot formed therein ... | 01/25/1994 |
| 5275091 | Apparatus for aseptically processing a food product An apparatus for continuously aseptically processing a food product comprising delicate food chunks of fruit, vegetables or the like immersed in a liquid. The apparatus comprises a heating enclosure into which the food product and a nonsterile gas are int... | 01/04/1994 |
| 5102294 | Screw pump A screw pump for feeding highly viscous material such as mixed concrete and the like. Plural projections engage the helical screw of the screw pumps to facilitating removal of the material such as gravel caught in the screw pump. Further for preventing ex... | 04/07/1992 |
| 4978276 | Pump stage for a high-vacuum pump A high-vacuum pump includes a plurality of pump stages, each of which has a rotor and a stator. In one of the pump stages, either the rotor or the stator is provided with a structure that effects the gas conveying includes radially extending webs whose pi... | 12/18/1990 |
| 4910973 | Portable ice cream machine A machine for making ice cream and the like, having a receptacle for receiving liquid ingredients to be used for making the ice cream. A mixing chamber is provided which has an egress from which the ice cream exits. A cooling chamber surrounds the mixing ... | 03/27/1990 |
| 4830865 | Method for aseptically processing a food product A method and apparatus are disclosed for continuously and gently aseptically processing a food product comprising delicate food chunks of fruit, vegetables or the like immersed in a liquid. The apparatus comprises a heating enclosure into which the food p... | 05/16/1989 |
| 4789299 | Liquid and air pump B A compressor pump for conveying fluids is provided and consists of an electric motor driving a cone-shaped impeller within a stationary casing affixed to a stationary stand in which fluids entering the casing and through the impeller are compressed to exi... | 12/06/1988 |
| 4770606 | Centrifugal compressor A centrifugal compressor having a rotor driven by a motor for rotation about a shaft which is provided at its one end with an inlet opening of the gas to be compressed and on its opposite end with an outlet opening. The rotor has radial centrifugal compre... | 09/13/1988 |
| 4684317 | High-vacuum molecular pump The invention relates to a high-vacuum molecular pump of the kind comprising at least two coaxial elements (1 and 2) mounted rotatably with respect to each other and at a small distance from each other, wherein a side of one of the elements (1) positioned... | 08/04/1987 |
| 4481020 | Liquid-gas separator apparatus A centrifugal liquid-gas separator apparatus which is particularly adapted for use downhole with a submergible pump comprises an elongated hub having disposed on its periphery helical blades defining a screw-type inducer for pressurizing a liquid-gas flui... | 11/06/1984 |
| 4456437 | Refrigerant compressor A refrigerant compressor for use in refrigerators, air conditioners, heat pumps or the like apparatus. The refrigerant pump has a casing which encases a combination of a compressor and an electric motor. A spring guide has an attaching base portion fixed ... | 06/26/1984 |
| 4449895 | Refrigerant compressor A refrigerant compressor suitable for use in refrigerators, air conditioners, heat pumps or the like apparatus. The refrigerant compressor has a closed casing which encases a driving electric motor section and a compressor section constructed as a unit. T... | 05/22/1984 |
| 4245949 | Archimedean screw pumps An improved form of archimedean screw pump is disclosed comprising a pump cylinder having an internal helicoidal vane portion affixed to the said pump cylinder by its circumferential helical edge and a partial core portion affixed to and extending from th... | 01/20/1981 |
