Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 6511307 | Method for producing a vacuum by a pumping-ejection system A method for producing a vacuum, which includes feeding an ejecting vaporous medium into the gas ejector, evacuating an ejected gaseous medium by the ejecting vaporous medium, mixing of the vaporous and gaseous mediums and forming a mixture of the two, ev... | 01/28/2003 |
| 6146115 | Piston pump A piston pump which is intended particularly for use in a slip-controlled hydraulic vehicle brake system. To increase a pumping volume of the piston pump at low pumping pressure, the piston pump includes a body embodied preferably as an annular body which... | 11/14/2000 |
| 6132188 | Dosing pump with magnetic control The invention relates to a metering pump comprising a pump chamber (2) having a longitudinal axis (3) and presenting an admission orifice (4) and a delivery orifice (5), a piston (6; 30) pierced by a pump orifice (7), a drive rod (8) for driving the pisto... | 10/17/2000 |
| 5927957 | Plunger device and method of making and using the same thereof New plunger having a cylindrical hollow body 20 or 20B, a handle 30, 30A, or 30B, an outlet hose 40, an outlet tip 42, and a valve or flap 50, 60, or 70 that is able to control the air flow within the hollow 25 of the cylindrical body 20 or 20B. Valve or ... | 07/27/1999 |
| 5829952 | Check valve with a reversible valve ball and seat A reversible valve ball assembly for use in a down-hole pump oil field check valve. The reversible valve ball can be removed, inverted and reinserted into the check valve to provide a new valve ball sealing surface. The reversal of the valve ball is perfo... | 11/03/1998 |
| 5407333 | Subsurface pump with pump rod connected valve ball A rod-driven, downhole pump is disclosed, the pump including a traveling barrel contained within a pump housing, a central pump rod extending axially within the barrel, a valve ball located at the lower end of the pump rod, a valve seat near the barrel lo... | 04/18/1995 |
| 5326237 | High volume pump with valve tube A pump for moving a fluid includes an outer chamber having a first end wall portion containing a fluid entrance port and a second end wall portion containing a fluid exit port, a valve tube slidably contained within the chamber and having a first edge wit... | 07/05/1994 |
| 5292236 | Positive displacement pump with pivot piston valve The pump comprises a cylinder delimiting a pumping chamber in which a piston is mounted to slide between an admission orifice and a delivery orifice, the piston including a pumping orifice which is associated with a closure member mounted to pivot about a... | 03/08/1994 |
| 5139398 | Neutralizer valve for a downhole pump A neutralizer valve that is for use in conjunction with one or more reciprocating pumps of a tubing string that is operated in an oil well for recovery of crude oil. The neutralizer valve takes the place of a regular traveling valve in a rod pump, which i... | 08/18/1992 |
| 4930670 | Pumping mechanism for dispensing lotion in bottle/container A pumping mechanism for a bottled lotion is constructed so that lotion is prevented from flowing out of the bottle if the bottle is inadvertently not placed upright. The pumping mechanism includes a hollow cylindrical member, a piston member, a hollow ope... | 06/05/1990 |
| 4878819 | OTR safety urinal pumps A tie rod type cylinder valved at its lower plate and having a receiver on its upper plate. A rod-less trunk-like piston containing an inlet valve with a stem projecting out of the cylinder and connected with an actuator. The piston face having an opening... | 11/07/1989 |
| 4813485 | Gas and oil well pumping or swabbing device and method The pumping or swabbing device and apparatus of the invention utilizes an elongate barrel slidable upwardly and downwardly on an axial rod which carries a valve element for closing on a valve seat provided interiorly of the barrel to close passage through... | 03/21/1989 |
| 4781547 | Gas equalizer for downhole pump A gas equalizer device for use in conjunction with a reciprocatory pump located downhole in a wellbore. The device of the present invention avoids a condition commonly known in the pumpjack art as "fluid pounding", which is brought about when compressible... | 11/01/1988 |
| 4770614 | Apparatus for transferring fluid medium An apparatus for transferring a fluid medium comprises a housing (1) having an interior (4) in the top portion (2) thereof communicating through selector valves (5,9) with the atmosphere and with an intake line (6), the bottom portion 3) of the housing (1... | 09/13/1988 |
| 4758131 | Apparatus for displacing high viscous substances An apparatus for displacing a high viscous substance, such as grease, which comprises a positive displacement-type pump. The chamber of the pump is in communication with a second chamber defined by a tubular sleeve that is slidably displaceable on the bod... | 07/19/1988 |
| 4740141 | Plunger with composite retention valve A pump is disclosed comprising a piston plunger with a valve disposed in it. The ratio of the flow area on either side of the valve is optimized.... | 04/26/1988 |
| 4708597 | Plunger with simple retention valve A fluid pump is disclosed having a plunger reciprocating within a working cylinder and a standing intake retention valve. The plunger comprises a stem having affixed to it a plug and a stop, a body being slidably engaged to the cylinder an located on the ... | 11/24/1987 |
| 4697993 | Fluid medium compressor and user apparatus A fluid medium pump includes a piston having a hollow interior for receiving a connecting rod adapted to open and close a passage through the piston selectively in accordance with the sense of movement of the rod. The connecting rod includes a groove that... | 10/06/1987 |
| 4662831 | Apparatus for fracturing earth formations while pumping formation fluids Oil and other fluids are pumped from a well drilled into chalk or other difficult-to-produce formations by applying a back pressure to the formation concurrently with pumping fluid from the formation. One embodiment a pump suitable for performing the meth... | 05/05/1987 |
| 4631003 | Fluid medium compressor and user apparatus A fluid medium pump includes a piston having a hollow interior for receiving a connecting rod adapted to open and close a passage through the piston selectively in accordance with the stroke of the rod. User apparatus includes the pump and various pump he... | 12/23/1986 |
| 4629402 | Valve assembly An improved submersible pump valve assembly, actuated by the reciprocating movement of a sucker rod extended from surface equipment to a downhole traveling valve located in a tubing string, the valve assembly comprising a rotatable fluid port assembly sup... | 12/16/1986 |
| 4591316 | Piston with simple retention valve A positive displacement pump particularly useful in pumping viscous fluids which may or may not contain gases, including water vapor, and/or suspended solids in which the actual flow equals the theoretical maximum flow through a check valve associated wit... | 05/27/1986 |
| 4591315 | Piston with composite retention valve A positive displacement pump particularly useful in pumping viscous fluids which may or may not contain gases, including water vapor, and/or suspended solids in which the actual flow equals the theoretical maximum flow through a check valve associated wit... | 05/27/1986 |
| 4504199 | Fluid pump A fluid pump for raising petroleum fluids through production tubing in completed oil wells includes two mechanically actuated valves, one of which moves longitudinally within the pump housing, and the other valve which rotates within the pump housing.... | 03/12/1985 |
| 4014629 | Pump for pumping both low viscosity and high viscosity fluids An improved pump for pumping both low viscosity and high viscosity fluids, which contains therein a body with three cavities, a hollow cylinder fitting in the first cavity and attached at its lower end, a hollow cylinder head containing therein a first va... | 03/29/1977 |
