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"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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| Number | Title | Issue Date |
| 7074020 | Sanitary pump and sanitary valve A sanitary pump and sanitary valve is provided employing a dual action piston for providing a constant pressure metering and delivery of fluids utilizing a drive shaft positively driven and controlled by a drive motor for sanitary applications. The sanitary pump may... | 07/11/2006 |
| 6692237 | Rotary piston cylinder device with radially extending cylinder chambers intersecting at a rotary axis A rotary cylinder apparatus which prevents a fluid from leaking from a contact portion of a piston and a cylinder member and consequently enables efficient rotation. The rotary cylinder apparatus comprises: a rotary cylinder member 2 which has cylinder ch... | 02/17/2004 |
| 6634871 | Suction-discharge device for fluids comprising a piston within a rotating inner tube and a plurality of suction and discharge holes An object of the present invention is to provide a suction-discharge device for fluids capable of sucking fluids continuously and discharging fluids continuously under fixed flow rate and pressure, without substantially bringing about pulsations of even o... | 10/21/2003 |
| 6511306 | Zero leakage valveless positive fluid displacement device A Positive Fluid Displacement Device (PFDD) with single piece double-ended pistons connected to a crankpin for circular motion. Pistons are nested together to maintain all pistons in the same plane perpendicular to the axis of the crankshaft. Cylinders ar... | 01/28/2003 |
| 6357233 | Air switch operator A pneumatic operator for an air switch is provided. The operator is used to deliver at pulse of relatively high pressure air to an air switch, such as an air switch which would be commonly used in a spa bath or spa pool installation to operate a pump. The... | 03/19/2002 |
| 6283723 | Integrated compressor expander apparatus Fluid displacement apparatus with a set of opposing pistons in traveling chambers and a set of opposing pistons in stationary bores; a second embodiment with all pistons in traveling chambers; a third embodiment with all pistons in stationary bores. In ea... | 09/04/2001 |
| 6220487 | Dispensing apparatus A dispensing pump includes first and second sleeve assemblies. Each sleeve assembly includes a rotary valve having an input and output position and a longitudinally displaceable piston that moves between a first position abutting the valve and a second po... | 04/24/2001 |
| 6162030 | Zero leakage valveless positive fluid displacement device A Positive Fluid Displacement Device (PFDD) with a removable Fluid Displacement Module (FDM) having two opposing pistons connected to a drive block. The drive block slides over a crankpin bearing in assembly to provide orbital piston motion. Opposing cyli... | 12/19/2000 |
| 6152113 | High-pressure injector for a diesel engine A high-pressure fuel injector of a diesel engine includes a nozzle body, a pressure chamber body and a pressure piston. The nozzle body has a cavity in a central region thereof and a closed top end formed integrally thereon, the nozzle body includes a sol... | 11/28/2000 |
| 5993172 | Method and apparatus for pressure processing a pumpable substance An improved method and apparatus for pressure processing a pumpable substance are shown and described. In a preferred embodiment, a valve is coupled to a source of a pumpable substance and a pressure vessel, the valve being movable to a first, second and ... | 11/30/1999 |
| 5746413 | Fluid metering valve A fluid metering valve adaptable for outputting a fixed volume of lubricating oil from a diesel engine into an engine fuel system includes a sleeve slidably disposed in a body and a piston valve slidably disposed within the sleeve. A spring resiliently bi... | 05/05/1998 |
| 5593288 | Liquefied gas pump A liquefied gas pump includes a piston and a cylinder which form a pump chamber into which a liquefied gas entrance path and a liquefied gas discharge path open. Relative upward and downward motion between the piston and cylinder provides a repetition of ... | 01/14/1997 |
| 5044900 | Positive displacement shuttle pump A positive displacement shuttle pump having a cylinder with axially displaced and mutually isolated inlet and outlet portions; a shuttle piston having a reservoir for accepting pressurized feed from the inlet port in the feed cycle and for dispensing feed... | 09/03/1991 |
| 5005296 | Plotter and ink pressurizing pump A pen plotter includes a means for applying pressurized air to the ink reservoir supplying the pen with ink. A pressure sensor associated with the pressurized air space provides an out-of-ink signal when the reservoir and pen become empty and the air pres... | 04/09/1991 |
| 4902208 | Pump having piston and cylinder rotatable respectively about spaced axes transverse to the reciprocating axis A pump assembly (10) including a piston (12) connected to a rotating wheel (30) by a pin (32) radially offset from the axis of rotation of the wheel and a cylinder (14) in reciprocating telescoping relationship with the piston (12) and supported by a holl... | 02/20/1990 |
| 4767294 | Power conversion device A power conversion device which can efficiently convert between fluid pressure and rotary motion. The device includes a piston plate, which is surrounded by an array of pressure chambers and engageable with a shaft and its accompanying gear assembly. Mani... | 08/30/1988 |
| 4687408 | Lock for the transport of bulk material In a lock for the transport of bulk material between chambers being under different pressure a lock chamber (4) is guided tightly and driven by a reciprocal movement in a preferably horizontal guide tube (2), which comprises on different sides of its wall... | 08/18/1987 |
| 4672989 | Flow conditioned nutation valving apparatus and method of operation Structure and method are disclosed for providing timed valving in which a nutating plate having an opening defined therethrough moves relative to at least one other nominally static plate having a complementary opening defined therethrough, the nutating p... | 06/16/1987 |
| 4615661 | Magnetic pump A magnetic pump having a housing or block with three compartments and a port for supplying fluid into the center compartment. A pair of receivers are mounted in the center compartment and have check valves to allow fluid to flow into the receivers and out... | 10/07/1986 |
| 4610609 | Sealing apparatus for device having variable volume chambers A sealing apparatus is disclosed for a device having variable volume chambers formed by the walls of a case and a piston. The device includes a piston assembly having an outer piston structure with an inner piston structure therein. The inner piston struc... | 09/09/1986 |
| 4597403 | Nutation valving apparatus and method of operation Structure and method for providing timed valving in which a nutating plate having an opening defined therethrough moves relative to at least one other nominally static plate having a complementary opening defined therethrough, the nutating plate at one po... | 07/01/1986 |
| 4443163 | Fluid motor or pump A fluid motor or pump that has a front wall, four corner conduits, two lateral conduits, a chamber, two pistons, a piston rod and a crank, in which the rotary motion of the crank is transformed to a vertical sliding motion of the chamber and a horizontal ... | 04/17/1984 |
| 4173451 | Downhole pump An improved downhole pump includes a pump body connected to the lower end of tubing extending inside a well. Pumping is effected below the standing valve by a plunger reciprocating within a slidable barrel. In one embodiment, the ported barrel is magnetic... | 11/06/1979 |
| 4160628 | Positive displacement machine A positive displacement machine has a housing bounding an elongated interior compartment, a flat displaceable part-circular element in said compartment subdividing the latter into a pressure chamber and a suction chamber and having a recess in a periphery... | 07/10/1979 |
