Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7128276 | Method for mixing fluids The use of a turbulent contactor to absorb a selected gas component from a gas stream. The invention particularly applies to a method of distributing a liquid into a gas stream which comprises providing a liquid to an annulus at the periphery of a pipe in which a ga... | 10/31/2006 |
| 7069716 | Cooling air distribution apparatus An apparatus for the distribution of cooling air having a cooling air distribution housing having an exterior wall, an interior wall, an inlet end and an outlet end defining a substantially circular passage therethrough, a cooling air providing assembly provides coo... | 07/04/2006 |
| 7044730 | Device for improving gas fuel burning The invention concerns a device for bringing together a gas fuel and an oxidant in proportions providing optimal burning, so as to obtain, in particular for a fuel gas supplied with low pressure level and containing hydrocarbons, a smokeless burning. Said dev... | 05/16/2006 |
| 6942801 | Apparatus and process for aerobic digestion of organic sludge An apparatus for treating organic sludge by aerobic digestion has an aerobic digestion tank 1, a circulation line 6 provided with a pump for pumping circulated sludge, a liquid/gas ejector 7 for aspirating an oxygen-containing gas, which has bee... | 09/13/2005 |
| 6582199 | Multi-stage ejector pump A multi-stage ejector pump having an ejector nozzle system with the nozzles situated coaxially behind each other and axially set apart from each other by a spaced distance. The ejector a nozzle system is made up of a set of individual nozzles and nozzle s... | 06/24/2003 |
| 6471489 | Supersonic 4-way self-compensating fluid entrainment device A self-compensating, energy saving heat transfer unit to provide an efficient means to transfer energy from steam to water in a central heating system. The steam enters a mixing chamber and creates a negative pressure environment. Water in a backwater pip... | 10/29/2002 |
| 6422828 | Cyclonic ejection pump A cyclonic ejection pump is designed for large flow rates, for example, applicable to the so-called "Oceanic Thermal Energy Conversion," normally abbreviated to OTEC, an energy generating system developed for utilizing the potential thermal oceanic energy... | 07/23/2002 |
| 6171068 | Vacuum pump A hybrid vacuum pump comprising an ejector type compressed air-operated vacuum pump. Such pump comprises a housing having an inlet for compressed air, a second inlet connectable to the enclosure to be evacuated, and a discharge outlet. The incoming compre... | 01/09/2001 |
| 5746583 | Vacuum boost device A vacuum boost device is connected in line with a vacuum suction line. The boost device includes a housing connected in said vacuum line and an inlet through which air of a liquid is directed to enter into the vacuum stream to assist in the vacuum and to ... | 05/05/1998 |
| 5694989 | Apparatus for establishing negative air pressure in a fluid-containing tank A nozzle for attachment to a fluid-containing tank which is capable of applying negative air pressure to and establishing negative air pressure within the interior of the tank by forcing compressed air flow through the nozzle is provided by the present in... | 12/09/1997 |
| 5647221 | Pressure exchanging ejector and refrigeration apparatus and method A novel ejector, an ejector-refrigeration system, and a method of refrigeration are disclosed. The system is particularly well suited for the utilization of energy sources such as waste heat from automobile engines and solar collectors. Further, the syste... | 07/15/1997 |
| 5628623 | Fluid jet ejector and ejection method A fluid jet ejector and ejection method wherein a plurality of high velocity jet streams of a primary fluid are discharged through a vacuum chamber into a convergent-divergent diffuser or nozzle to draw a secondary fluid into the chamber in such manner th... | 05/13/1997 |
| 5537813 | Gas turbine inlet air combined pressure boost and cooling method and apparatus The operational capacity and efficiency of a combustion turbine is increased by treating the turbine inlet air to increase its density. The inlet air treatment is achieved in a columnar tower with the inlet air being drawn in at the top of the tower. Trea... | 07/23/1996 |
| 5417550 | Submersed jet pump for generating a stream of water An apparatus for generating a stream in a body of water has at least one cylinder installed under water, and a water-jet pump housed in the cylinder. The pump draws water in through one end of the cylinder and produces a stream of water accelerated by a d... | 05/23/1995 |
| 5312231 | Slurry conveyor device The objects of the invention are to prevent the backflow of slurry by first enclosing it in a closed space and then using air to force it along a discharge channel, and at the same time to ensure the smooth throughput of the slurry by causing any foreign ... | 05/17/1994 |
| 5207249 | Vapor recovery system and pump A liquid jet gas pump is connected to a vapor return line for a plurality of liquid dispensing nozzles. The jet pump has a multi-jet orifice plate and a single diffuser tube is coaxially aligned with the orifices in the plate, all of the jets entering the... | 05/04/1993 |
| 5173030 | Jet pipe A jet pipe comprises a housing having a suction inlet for the medium to be taken in and an outlet, a conical tubular portion following the suction inlet towards the outlet and a section adjacent to the suction inlet provided with discharge openings arrang... | 12/22/1992 |
| 5169293 | Ejector with high vacuum force in a vacuum chamber An ejector includes a nozzle through which a first fluid is ejected to produce a vaccum in a vacuum chamber. The vacuum chamber includes an opening through which a second fluid is introduced. The vacuum chamber further includes an inlet through which a th... | 12/08/1992 |
| 5080560 | Dryrite borehole dewatering system Apparatus for extracting water comprises an air compressor, a diaphragm type suction pump, a jet pump for insertion into a borehole and a suction line connecting the jet pump to the diaphragm pump. Air to accelerate water through the jet pump and into the... | 01/14/1992 |
| 5054688 | Foam producing nozzle A nozzle assembly for aerating a pressurized liquid stream to produce a discharge of foam includes a plurality of arcuate venturi throats in a circular arrangement around the center of the nozzle together with a radial air inlet to each throat which is ad... | 10/08/1991 |
| 4842777 | Pressurized mixing injector The invention relates to a multiple liquid injector composed of several identical elementary injection tubes 2, disposed in a rim around a central tube. Each tube 2 has an inlet conduit 3, itself comprising a converging truncated cone 6 and a cylinder 7, ... | 06/27/1989 |
| 4815942 | Axially-symmetric, jet-diffuser ejector An axially symmetric jet difuser ejector having attached primary injection nozzles without protruding outside the ejecting structure and being spaced around the ejector inlet. The primary nozzles have been specially designed to optimize the conveyance of ... | 03/28/1989 |
| 4776731 | Method and apparatus for conveying solids using a high velocity vacuum A method and apparatus for pneumatically conveying solid materials such as soil, stones and the like. A hollow bored tube having an inlet end, a discharge end and an intermediate injector section is provided with at least one nozzle of the converging/dive... | 10/11/1988 |
| 4725203 | Liquid-gas ejector device and method used to produce a diphasic flow A method for producing a flow of fluid comprised of at least phases from at least two primary flowing fluids, one of which has at least one liquid phase, and the other at least one gaseous phase, wherein the two primary fluids flow out respectively throug... | 02/16/1988 |
| 4718835 | Mining apparatus and jet pump therefor This disclosure relates to deep sea mining apparatus, comprising a relatively straight lift pipe, the lift pipe being adapted to extend substantially vertically from the floor of a body of water upwardly to a ship on the surface of the water. A plurality ... | 01/12/1988 |
| 4702676 | Liquid driven pump or propulsive apparatus The apparatus relates to a jet pump or apparatus which displaces a main fluid by a pressurized driving liquid. The apparatus has a duct to receive the main fluid, and a driving liquid manifold cooperating with the duct to receive the pressurized driving l... | 10/27/1987 |
| 4696625 | Ejector and method of fabrication An ejector device consists of a number of ejector units each of which includes a suction chamber. The individual units are positioned in a common housing. For making the ejector the housing is produced and the suction chambers are produced therein. These ... | 09/29/1987 |
| 4580948 | Hydrokinetic amplifier with high momentum transfer coefficient A hydrokinetic amplifier 10 increases the vapor momentum transfer coefficient by directing an annular liquid jet 20 into an acceleration chamber 13 and impinging high velocity vapor streams on both the interior and exterior surfaces of annular liquid jet ... | 04/08/1986 |
| 4487553 | Jet pump A Jet pump for transporting fluid by drawing in the fluid through utilization of a jet stream under high pressure includes a path for transporting the fluid, a plurality of nozzles surrounding the path for supplying high pressure fluid and a plurality of ... | 12/11/1984 |
| 4419074 | High efficiency gas burner A burner assembly provides for 100% premixing of fuel and air by drawing the air into at least one high velocity stream of fuel without power assist. Specifically, the nozzle assembly for injecting the fuel into a throat comprises a plurality of nozzles i... | 12/06/1983 |
| 4400138 | Multiple jet eductor An improved multiple jet eductor assembly is described consisting of two parts: (1) a manifold ring with a pressurized water inlet and a plurality, preferably four, of radially-spaced, forwardly- and convergingly-directed jet nozzles, and (2) a tube havin... | 08/23/1983 |
| 4379679 | Supersonic/supersonic fluid ejector An ejector for pumping a low pressure, supersonic driven stream to a high pressure is disclosed. Effective pressure recovery in a relatively short axial length is sought. The low pressure driven stream is flowed at supersonic velocities into the ejector. ... | 04/12/1983 |
| 4368009 | Aspirator An aspirator used to inflate flexible structures such as aircraft evacuation slides, rafts, or the like comprises a tubular housing an atmospheric air inlet at one end of the housing, a nozzle within the housing for introduction of high pressure gas downs... | 01/11/1983 |
| 4358249 | Vacuum chamber with a supersonic flow aerodynamic window A supersonic flow aerodynamic window, whereby a steam ejector situated in a primary chamber at vacuum exhausts superheated steam toward an orifice to a region of higher pressure, creating a barrier to the gas in the region of higher pressure which attempt... | 11/09/1982 |
| 4332529 | Jet diffuser ejector A jet diffuser ejector constructed and defined for maximizing thrust augmentation with minimal length. The ejector is provided with primary injection nozzles arranged in a preselected spaced relationship with the inlet section of the ejector and at a pres... | 06/01/1982 |
| 4322897 | Airlift type dredging apparatus The dredging apparatus includes a vertical hollow body arranged to be lowered to the ocean floor and incorporating a venturi entrance at a bottom opening converging to a throat and thence widening abruptly to define an annular step facing upwardly. The di... | 04/06/1982 |
| 4310288 | Method and apparatus for improving erosion resistance of the mixing chamber of a jet pump To improve the erosion resistance of the mixing chamber of a jet pump employed to pump particulate containing fluids, this invention contemplates directing a pressurized source of clean fluid through an annular jet-type orifice, thus providing an annular ... | 01/12/1982 |
| 4297084 | Gas anchor A gas anchor for an oil and gas producing well; the gas anchor includes an elongate fluid gas conducting coupling with upper and lower ends; the upper end of the coupling is engaged in the lower end of a production tubing entering the well; an elongate ve... | 10/27/1981 |
| 4274812 | Jet pump In a jet pump suitable for pumping liquids, gases, or particulate solids, the primary and secondary flows both pass through the pump in-line, i.e. in the same axial direction. This is achieved by mounting the nozzle head (from which the primary flow issue... | 06/23/1981 |
| 4245961 | Ejector utilizing a vortex flow An improved ejector utilizing a vortex flow for pumping a fluid. The ejector includes a funnel shaped fluid chamber circumscribing a longitudinal axis and converging from a wide end to a narrow end. A venturi-like throat circumscribing the longitudinal ax... | 01/20/1981 |
