In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7387112 | Jet pump, fuel feed apparatus having the same, and method for welding the same A jet pump is provided for supplying fuel from a fuel tank into a sub-tank, which is accommodated in the fuel tank. The jet pump includes a welded portion adapted to being welded to an outer wall surface of a bottom portion of the sub-tank. A swirl portion defines t... | 06/17/2008 |
| 7281904 | Transmission pump and filter The filter housing has a filter outlet portion with a central filter outlet passage. The outlet portion includes a terminal end portion defining a filter nozzle. The filter nozzle forms a nozzle passage between the filter nozzle and the pump housing. The nozzle pass... | 10/16/2007 |
| 7192257 | Jet pump for boosting pressure at an inlet supplied from a sump and second fluid source The automatic transmission for motor vehicles includes a positive displacement pump, a sump hydraulically connected by a passage to the pump inlet, a line pressure control valve having a high pressure outlet, a passage carrying fluid from the control valve through a... | 03/20/2007 |
| 7165948 | Ejector A nozzle (41) is made of a sintered metal, and a pressure increasing portion (a mixing portion (42) and a diffuser (43)) is manufactured by plastic-forming a metal pipe. Accordingly, the nozzle (41) can be manufactured in a short time whi... | 01/23/2007 |
| 7118336 | Pressurized oil supply for propeller engine system A system and method for providing pressurised oil during non-feathered in-flight shutdown conditions in a variable-pitch aircraft propeller engine. A secondary pump provides pressurised oil substantially independent of an engine main oil circuit. ... | 10/10/2006 |
| 6877961 | Vane pump with a bypass valve and passage arrangement for equalizing excess fluid flow through dual suction passages In a housing of a pump apparatus having a flow control valve to discharge a part of excess fluid in a deviated slanting way to a bypass pass 11, a pair of suction paths 19, 19′ is formed opposite to end portions 119, 119′ of the bypass path ... | 04/12/2005 |
| 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 |
| 6354807 | Method for generating vacuum and pumping-ejection apparatus for realizing the same 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... | 03/12/2002 |
| 6098600 | Fuel supply system A fuel supply system has a fuel tank in which a sub-tank and a jet pump are installed. The jet pump has a fuel supply passage into which fuel returned from an engine of a vehicle is supplied, and a fuel injection passage having an injection hole at a fuel... | 08/08/2000 |
| 6079951 | Bird bath fountain An animal watering system, such as a bird bath, incorporating a water reservoir, a means to automatically maintain the level of water in the reservoir by admitting fresh water thereto, an animal access basin positioned above the water reservoir whereby wa... | 06/27/2000 |
| 5967760 | Jet pump with filter for washing machines A clog resistant pump for washwater employs two water flow circuits. The first powered by a conventional motor-driven pump uses filtered washwater and drives a jet-pump discharging unfiltered washwater from the washing machine. The intake or discharged wa... | 10/19/1999 |
| 5896435 | Pressurized water supply device for a steam injector water source The injector (B) designed specifically to supply a steam generator (G) with water at high pressure when necessary, is supplied by steam that may originate from the generator itself, and by pressurized water from an ejector (C) supplied during the start up... | 04/20/1999 |
| 5511950 | Vacuum pumps for recovering condensates from steam-using apparatus A condensate recovering vacuum pump uses the condensate in a condensate tank as the boiler feed water. A circulating pump supplies the feed water to the feed-water ejection nozzle of a jet pump. The condensate collected from the steam trap of the steam-us... | 04/30/1996 |
| 5133324 | Ejector pump for vehicle fuel tank In an ejector pump provided within a saddle-shaped fuel tank for an automotive vehicle to feed fuel from a subchamber to a main chamber through a suction pipe due to a vacuum generated by fuel returned from an engine to the fuel tank via a return pipe, th... | 07/28/1992 |
| 4408961 | Jet pump with integral pressure regulator A combined pressure regulator and jet pump includes a valve member and cooperating nozzle defining member which are coaxial and independently movable. Both members are responsive to the difference in upstream and downstream pressures and each member will ... | 10/11/1983 |
| 4233116 | Nuclear reactor coolant transport system A system for transporting reactor coolant in nuclear reactors using a liquid coolant. The system diverts a portion of the output from the main circulating pump in the nuclear reactor primary flow system and introduces this diverted coolant back into the s... | 11/11/1980 |
| 4213741 | Variable flow ejector A variable flow ejector for use in controlling the amount of bypass flow in a fluid delivery system which includes a pump, a metering orifice and a bypass line for circulating a variable amount of flow from the pump outlet to the pump inlet to control the... | 07/22/1980 |
| 4033706 | Fluid delivery system with a jet pump booster and means to maintain a constant rate of flow through the jet nozzle A fluid delivery system and, more particularly, a system for delivering fuel to an aircraft engine. A positive displacement pump delivers fuel to the engine and is supplied by an ejector boost pump connected to a fuel tank and having a nozzle supplied wit... | 07/05/1977 |
| 3973879 | Liquid ring compressor In a liquid ring compressor with a liquid separator which has a liquid take-off point in its housing which is fed by the liquid ring co-rotating with the impeller and connected through connecting lines outside the housing to internal auxiliary liquid circ... | 08/10/1976 |