Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 7140833 | Integrated turbo/drag/regenerative pump with counter-rotating turbo blades The present invention relates to vacuum pumps and a method for creating and maintaining a high vacuum. A vacuum pump includes a regenerative section and a turbo-molecular section. A common first rotor carries forward-rotating elements of both the regenerative sectio... | 11/28/2006 |
| 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 |
| 7041580 | Laser annealing method and laser annealing device A laser-annealing method includes the steps of a first step of cleaning a non-monocrystal silicon film formed on a substrate, and a second step of laser-annealing the non-monocrystal silicon film in an atmosphere containing oxygen therein, wherein the first and seco... | 05/09/2006 |
| 6684658 | Vapor-compression evaporative air conditioning systems and components Novel vapor compression evaporative cooling systems which use water as a refrigerant are provided, as are methods for using same. Also provided are novel compressors, compressor components, and means for removing noncondensibles useful in such cooling sys... | 02/03/2004 |
| 6120252 | Gas separation control in a centrifugal pump/vacuum pump A centrifugal and vacuum pump combination in which the impeller of a centrifugal pump is disposed on the same shaft as a rotor of the vacuum pump, with a gas outlet extending between the centrifugal and vacuum pumps, is operated by positively controlling ... | 09/19/2000 |
| 5842833 | Gas separation control in a centrifugal pump vacuum pump A centrifugal and vacuum pump combination in which the impeller of a centrifugal pump is disposed on the same shaft as a rotor of the vacuum pump, with a gas outlet extending between the centrifugal and vacuum pumps, is operated by positively controlling ... | 12/01/1998 |
| 5733104 | Vacuum pump system A vacuum pump system for multi-stage gas inlet systems and including a pumping unit formed of a turbomolecular pump and one or several further pumps arranged downstream of the turbomolecular pump and the rotors of which are located on the same shaft as th... | 03/31/1998 |
| 5495715 | Engine fuel metering system The amount of fuel supplied by a low pressure pump and a high pressure pump to combustion means is controlled by a control unit. If most of the fuel delivered by the pumps is required by the engine a clutch engages to provide a direct mechanical drive bet... | 03/05/1996 |
| 5267836 | Madreporitic resonant pump A multiplicity of heaters 50 on the surface 10 of a hollow torus chamber 4 are employed to exobarically stimulate the fluid contained in the chamber to make a resonant traveling wave 20 which has its high pressure peaks 22 adjacent outlet ports 16 and its... | 12/07/1993 |
| 4614480 | Liquid pumping system The pumping system employs horizontal shaft pumping units, each of which may be vacuum primed by a priming chamber which is mounted on the discharge outlet of the pump volute at a position above the volute itself. Preferably, each of the pump volutes has ... | 09/30/1986 |
| 4205945 | Unitized fluid delivery system and method of operating same A centrifugal boost pump, a primary centrifugal pump and a dynamic machine are driven through a common drive shaft. At low speeds, such as during pump start-up, the elements are in the aforementioned fluid serial relationship such that the dynamic machine... | 06/03/1980 |
| 4035104 | Self-priming centrifugal pump A self-priming centrifugal pump including a priming piston disposed in a priming chamber which communicates with the pumping chamber to receive fluid therefrom. During priming, the priming piston is driven by the impeller shaft through an eccentric to dis... | 07/12/1977 |
| 4014305 | Fuel injection pumping apparatus A fuel injection pumping apparatus includes an injection pump for supplying fuel to an engine, feed pump for supplying fuel to the injection pump, and throttle means for controlling the amount of fuel supplied by the feed pump to the injection pump. Inter... | 03/29/1977 |
| 3994638 | Oscillating rotary compressor Rotary apparatus for compressing and discharging fluid within a container. The apparatus includes an oscillating rotor or cam-like projection of substantially constant thickness in the plane of the longitudinal axis of the housing which cooperates with a ... | 11/30/1976 |
| 3946551 | Pumping and metering system This invention relates to an electromechanical pumping and fuel metering means interfacing an electronic fuel control adapted for small engines. A centrifugal engine driven pump and electrically driven pump are combined such that the electrically driven p... | 03/30/1976 |
| 3941505 | Method and apparatus for pumping fuel Method and apparatus for pumping fuel to jet engines and the like utilizing at least two stages, the first of which is a main stage including a centrifugal pump, together with a secondary stage including a positive displacement pump. The two pump stages a... | 03/02/1976 |
