"The horse is here to stay, the automobile is only a novelty - fad."
President of Michigan Savings Bank ; 1903
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 |
| 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 |
| 7090460 | Pump embodied as a side channel pump A side channel pump, preferably a vacuum pump, includes a driven rotor (16) and a fixed stator (14). The rotor (16) and the stator (14) define a pump channel circulating in a peripheral direction. Blades are fixed onto the rotor, protrudi... | 08/15/2006 |
| 6592335 | Ribbon drive pumping apparatus and method The ribbon drive 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 for rotation and the frequency of the coils decreases from the first end to the second end of... | 07/15/2003 |
| 6527520 | Ribbon drive pumping with centrifugal contaminant removal A ribbon drive pumping apparatus and method for liquids is disclosed wherein the inherent centrifugal separation that occurs adjacent the pump inlet is used to remove contaminants. The pump has an extended tube having an intake at a first end and an outle... | 03/04/2003 |
| 6439834 | Oil field tool The oil field tool motor is particularly suited for use in the oil well shaft environment wherein the temperature within the shaft can climb to nearly 400° F. and wherein the temperature within the motor can drop to nearly -400° F. when liquid nitrogen ... | 08/27/2002 |
| 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 |
| 6357998 | Ribbon drive pumping apparatus and method A ribbon drive pumping apparatus and method for 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 for rotation and the frequency of th... | 03/19/2002 |
| 6036443 | Helical turbine assembly operable under multidirectional gas and water flow for power and propulsion systems A helical turbine assembly capable of providing high speed unidirectional rotation under a multidirectional ultra low-head fluid flow is disclosed. The assembly comprises an array of helical turbine units or modules arranged, vertically or horizontally, t... | 03/14/2000 |
| 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 |
| 5451137 | Unidirectional helical reaction turbine operable under reversible fluid flow for power systems A reaction turbine capable of providing high speed unidirectional rotation under a reversible ultra low head pressure and/or high velocity fluid flow is disclosed. The turbine comprises a working wheel with a plurality of airfoil-shaped blades mounted tra... | 09/19/1995 |
| 5366341 | Helical hydraulic pump A rotary pump capable of slow movement, for wave power applications. The pump is a helix formed of tubing whereby when the helix is rotated, the inlet end of the tubing scoops water and an outlet end of the tubing directed along the central longitudinal a... | 11/22/1994 |
| 5277542 | Turbine with spiral partitions on the casing and rotor thereof With a turbine of the present invention, a preferably spiral partition is formed upright on the outer periphery of a rotor carried rotatably in a casing. A large number of blades are mounted between turns of the partition at a predetermined interval on th... | 01/11/1994 |
| 5186602 | Turbine and turbocharger using the same With a turbine of the present invention, a preferably spiral partition is formed upright on the outer periphery of a rotor carried rotatably in a casing. A large number of blades are mounted between turns of the partition at a predetermined interval on th... | 02/16/1993 |
| 5167483 | Method for utilizing angular momentum in energy conversion devices and an apparatus therefore An energy conversion device which benefits from forces associated with angular momentum. A mass such as fluid is directed through a conduit from one elevation to a lower elevation with the conduit configured to conform to a decreasing cross-sectional area... | 12/01/1992 |
| 5098258 | Multiple stage drag turbine downhole motor A multistage drag turbine assembly is provided for use in a downhole motor, the drag turbine assembly comprising an outer sleeve and a central shaft positioned within the outer sleeve, the central shaft having a hollow center and a divider means extending... | 03/24/1992 |
| 4912924 | Rotary internal combustion engine and power plant A rotary internal combustion engine and a power plant having at least one such engine. The engine has a generally cylindrical rotor with one or more helical grooves on the outside rotatably mounted in a cylinder, means for introducing a combustible fuel-a... | 04/03/1990 |
| 4785631 | Waste-heat turbine unit A waste-heat turbine unit is equipped with a rotating cylinder that is formed as a hollow body that carries a blading on its exterior. The blading is subjected to the exhaust gases of an internal-combustion engine that is a component of a drive assembly, ... | 11/22/1988 |
| 4773818 | Turbine The turbine comprises a casing having a plurality of grooves spirally formed upon an inner circumference thereof and a rotor having a plurality of grooves spirally formed upon an outer circumference thereof, each groove of the rotor having a plurality of ... | 09/27/1988 |
| 4680844 | Method of manufacturing a rotor A method of manufacturing a rotor (70) for use in an air motor. A shaft (10) is machined to have bearing surfaces (16 and 18) and adjacent ends (12 and 14), respectively. A working surface (20) with helix grooves (22, 24 and 26) is machined into the shaft... | 07/21/1987 |
| 4668159 | Compressed rotative motor A compressed air rotary motor includes high and low pressure rotors having peripheral helicoidal threads. The rotors are sandwiched between a circular plate and end wall while an intermediate wall separates the two rotors. Fluid passageways in the plate a... | 05/26/1987 |
| 4629395 | Fluid-powered rotary motor A fluid-powered rotary motor, and method of operating the same. Pressured fluid is introduced to the annular clearance between a rotor and a second member, and reaches an outlet by travelling circumferentially within that clearance. The direction of motio... | 12/16/1986 |
| 4616974 | Wind driven power generating apparatus A wind driven power generating apparatus which is automatically vertically adjustable depending upon the wind velocity.... | 10/14/1986 |
| 4500254 | Gas expansion motor A gas-operated motor that comprises a divergent nozzle helically wrapped around a rotary support shaft to convey gas from a high pressure inlet chamber to a low pressure outlet chamber. The gas is progressively depressurized during its flow along the nozz... | 02/19/1985 |
| 4317330 | Water turbine generator system A water turbine generator system for use in a stream or river, said system having a catch basin formed by an end wall, a plurality of water chutes downstream of the catch basin and in communication with the catch basin by gates and closures and a pluralit... | 03/02/1982 |
| 4228658 | Method and apparatus for converting pressure into rotative motion A fluid engine comprising a coiled conduit having a fluid inlet and a fluid outlet and supported to rotate about its axis in a partially immersed condition within a first fluid which interfaces with a second fluid having a different fluid density. Rotatio... | 10/21/1980 |
| 4218175 | Wind turbine A wind turbine is provided consisting of a cone or the frustum of a cone, on which are mounted in a more or less helical fashion, a plurality of blades having a varying pitch angle. The blades are arranged in a manner to utilize the initial force of the w... | 08/19/1980 |
| 4178124 | Turbine apparatus Wind turbine apparatus is mounted on a stationary tower and disposed to intercept wind currents. An air intake member is mounted thereon having a frusto-conical shape for accelerating the velocity of the wind intercepted by the intake unit or member. A tu... | 12/11/1979 |
| 4155022 | Line flow electric power generator An electrical power generator employing a helically-vaned in-line rotor in a flow line as a prime mover means and as an integral part of the generator by effecting a cyclic variation in the density of permanent magnet generated flux fields which pass thro... | 05/15/1979 |