Bizarre Patents
A banana protective device for storing and transporting a banana carefully.
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 |
| 8167587 | Pump assembly with reversible one-way valves A pump assembly includes a housing and first and second valves. The housing has a fluid inlet port and a fluid outlet port. The first and second valves are substantially identical valves both including a mounting portion, a valve seat and a valve body. The mounting ... | 05/01/2012 |
| 7360601 | Submersible well pump installation procedure A method of installing an electrical pump assembly in a subsea wellhead member avoids having to run the pump assembly through the wellhead member after removing the wear bushing. The operator first lowers the pump assembly on a string of tubing at least through the ... | 04/22/2008 |
| 7189325 | Method and device for desalting water The invention pertains to a method and a device for desalting water by reverse osmosis, particularly for desalting seawater, in which saltwater is introduced under a first pressure into a pressure-compensation device and conducted from pressure-compensation device a... | 03/13/2007 |
| 7165951 | High-pressure generating device A high-pressure fluid is continuously generated with high efficiency without causing pulsation of pressure by reciprocally moving a piston having first, second and third chamber sections under the control of an actuator including an operating pressure source and a d... | 01/23/2007 |
| 7163359 | Device for conveying powder and method for operating the same Transport system with several devices (1) for transporting powder, where each device (1) has a transfer chamber (3) into which a supply line (6) and a discharge line (8) for the powder open, and means to generate a negative pressur... | 01/16/2007 |
| 7147442 | Automatic oil pump, with a valved pumping piston and a valved driving piston unit An automatic oil pump includes a drive chamber, having a reciprocal driving device, and an oil chamber, having a sucking device, located on two sides of a main body. The reciprocal driving device has a piston unit having a valve chamber at its center and a balance v... | 12/12/2006 |
| 6929454 | Thick matter pump In a thick matter pump, especially for delivering concrete, comprising two delivery cylinders, it is known to provide two position sensors in one of the two cylinders for control of the pistons. However, leakage of hydraulic fluid can lead to an imbalance of the two... | 08/16/2005 |
| 6733253 | Hydraulic air compressor having an automatic water valve regulation mechanism An improved air compressor powered by water having an automatic water valve regulation mechanism. The air compressor includes a resiliently biased piston within a liquid chamber and a ram within a compression chamber, the ram being conjoined with the piston. Inlet a... | 05/11/2004 |
| 6676387 | Metering pump with a rotary valve responsive to electrical signals from the contact between a fluid responsive shuttle and dual probes A metering device contains a rotor which defines elongate chamber, there being a shuttle contained within the chamber movable between two terminal end positions. Frusto-conical surfaces defined on the rotor cooperate with annular members defining correspo... | 01/13/2004 |
| 6558134 | Fluid intensifier pump system An intensifier pump system includes a supply pump for delivering fluid products at an intermediate pressure. The products are delivered to one or more intensifier pumps that take advantage of hydraulic intensification to expel the product at high pressure... | 05/06/2003 |
| 6206658 | Organic substance processing system and organic substance processing apparatus Fluid containing organic substances, which has not processed yet, is fed to a plurality of cylinders, using a slurry pump. A free piston is included in each cylinder, the fluid which has not yet been processed is introduced into one of two chambers in the... | 03/27/2001 |
| 5934392 | Pressure converter Pressure amplifier mounted at the lower end of a drill pipe for deep drilling to generate an increased fluid pressure. A piston with a pressure stroke and a return stroke between end positions in a cylinder has a large piston area which during the pressur... | 08/10/1999 |
| 5782612 | Hydraulic gas compressor A gas compressor includes a housing, a separating element in the housing, and a piston guided for movement along the separating element by a drive mechanism between two dead center positions. Gas is compressed in a three-stage compression cycle by the pis... | 07/21/1998 |
| 5353870 | Well purging and sampling pump The disclosed well purging and sampling pump has a hydraulically actuated rim driven cylindrical pumping piston assisted by an internal precharged gas return spring all mounted coaxially within a pump housing cylinder suitable for being lowered into and s... | 10/11/1994 |
| 5302090 | Method and apparatus for the utilization of the energy stored in a gas pipeline A method for supplying at different pressures natural gas from a gas field under control of a continuous gas flow and the field pressure thereof and an apparatus for carrying out the method. The gas flow is received directly in and contained in two separa... | 04/12/1994 |
| 5249645 | Pressure fluid actuated lubricator A pressure fluid actuated lubricator having a housing (46), a pressure fluid channel (43, 42, 21) leading from an inlet opening (2) to an outlet opening (7), a reservoir (44) for a lubricant and a discharge device (19) for the lubricant. The reservoir (44... | 10/05/1993 |
| 5018350 | Long stroke deep well pumping unit A long stroke deep well pumping unit which employs a fluid motor connected with a polish rod by using a plurality of belts, fixed at either end, to reciprocate the sucker rod through repeated long strokes with a minimum of stress and shock to the sucker r... | 05/28/1991 |
| 4983103 | Annular plunger pump A pump is adapted for discharging a very small quantity of a liquid and has a discharge port opening and shut valve, discharge element and liquid drawing passageway opening and shut valve. The discharge port opening and shut valve includes a rod-shaped el... | 01/08/1991 |
| 4895492 | Double acting and automatically reversing pressure intensifier A double acting and at the limit positions automatically reversing pressure intensifier. A case has a first bore hole and a second bore hole. A pressure intensifier piston slides in the first bore hole of the case and subdivides the first bore hole into t... | 01/23/1990 |
| 4846634 | Water to emulsion transformer Disclosed is a device for converting pressure fluid input of one fluid to pressure fluid output of a second fluid without contaminating either fluid. The transformation is accomplished by a unique H section piston which cooperates the internally protrudin... | 07/11/1989 |
| 4818192 | Reciprocating pump The invention concerns a reciprocating pump whose plunger (10) is connected with a plunger rod (12) that runs in a stuffing box (13) coordinated with the pump cylinder (9) cap and is reciprocated hydraulically, where the cylindrical walls of the pump cyli... | 04/04/1989 |
| 4776774 | Hydraulic double-acting hydropneumatic pressure multiplying device In a hydraulic double-acting hydropneumatic pressure multiplying device suited for generating hydraulic pressure, and comprising a cylinder within which a piston is slidably mounted. The multiplying device is capable of generating hydraulic pressure in bo... | 10/11/1988 |
| 4756673 | Turbocharger In a turbocharger of the type in which a turbine and a compressor are disposed in back-to-back relationship and bearings are disposed on the suction side of the compressor, the turbine and the compressor are isolated thermally from each other; the service... | 07/12/1988 |
| 4738599 | Well pump A well pump, for pumping well fluid up a tubing string, the pump having inner and outer housings, inner and outer barrels, and upper and lower valves. A hydraulic fluid line extends downward through the casing, outside of the tubing string, from the surfa... | 04/19/1988 |
| 4735051 | Double admitting pressure intensifier A double admitting pressure intensifier which automatically reverses at its end positions is provided. The pressure intensifier comprises a pressure intensifier piston and a control slider running parallel to the pressure intensifier piston, each disposed... | 04/05/1988 |
| 4726743 | Hydraulically driven downhole pump A hydraulically powered reciprocating downhole pump having improved means for reliable and efficient operation is disclosed in which a reversing valve (8) is hydraulically shifted past center position so as to effect a smooth continuous operation. Inlet v... | 02/23/1988 |
| 4627794 | Fluid pressure intensifier A fluid pressure intensifier characterized by unitary construction of a bistable control mechanism, and a reciprocating assembly within a main cylinder providing unrestricted flow and optional modes of operation.... | 12/09/1986 |
| 4523895 | Fluid intensifier A fluid intensifier characterized by a bistable control mechanism which "remembers" the point in the operating cycle it is in. The bistable control mechanism controls the movement of a reciprocating assembly located within a main cylinder assembly. The re... | 06/18/1985 |
| 4478561 | Hydraulic intensifier A hydraulic intensifier comprising a stationary working fluid plunger connected to a power fluid cylinder and piston arrangement disposed around the plunger. The power fluid piston is disposed around and integral with a working fluid cylinder member which... | 10/23/1984 |
| 4392792 | Lineal multi-cylinder hydraulic pumping unit for wells The present invention provides a hydraulic pumping unit, which is capable of pumping oil and other fluids from the downhole of a well. The pumping unit includes a frame and multi-cylinder system which is attached to the frame in such a manner that it is g... | 07/12/1983 |
| 4353683 | Stirling cycle engine and fluid pump A Stirling cycle engine is provided with a variable volume displacer piston for displacing a working fluid alternately between the hot and cold ends of the engine. The drive shaft for the displacer piston is hollow and communicates with the interior varia... | 10/12/1982 |
| 4345880 | Multi-stage, reciprocating, positive displacement compressor A multi-stage, reciprocating, positive displacement compressor, in which the various stages are coaxial one with the other. The compressor has a double acting, monorod, hydraulic jack and at least one piston guided to slide hermetically in a cylindrical c... | 08/24/1982 |
| 4213298 | Self-reversing hydraulic control system and self-reversing pump incorporating such system A self-reversing hydraulic control system for use with a device to be driven in opposite directional modes, especially a self-reversing pump driven by such a device. The system depends upon a flow sensing element disposed to sense flow associated with mov... | 07/22/1980 |
