Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 7891943 | Stator cascade of turbo type fluid machine In the invention, stator blades are arranged in such a manner that respective intervals between the adjacent stator blades (SV) become unequal at least partly. If the stator blades are arranged as mentioned above, there are formed wave fronts having different moving... | 02/22/2011 |
| 7670110 | Sideload vanes for fluid pump A fluid pump assembly includes a rotatable component that can be rotated about an axis and a static vane assembly located adjacent to the rotatable component. The static vane assembly includes a circumferential surface axially spaced from the rotatable component, an... | 03/02/2010 |
| 7367775 | Apparatus and method for optimizing vibration of a gas turbine A rotor comprising several blades rotating together with the rotor, particularly running blades, and the blades forming at least one blade ring, is disclosed. The blades within the, or each, blade ring are arranged at a different distance from one another. ... | 05/06/2008 |
| 7305827 | Inlet duct for rearward-facing compressor wheel, and turbocharger incorporating same A turbocharger includes a compressor wheel having back-to-back impellers (i.e., a forward-facing impeller and a rearward-facing impeller) mounted on the same shaft. The two impellers are independently supplied with inlet air via separate inlet ducts and discharge pr... | 12/11/2007 |
| 7234914 | Apparatus and method for enhancing lift produced by an airfoil A compressor or pump employs principles of unsteady delayed stall to enhance the head increase produced by the compressor or pump. Plural airfoil-shaped lifting elements are spaced from each other in a cascade and the fluid is directed into the cascade by a device t... | 06/26/2007 |
| 7118331 | Stator vane assembly for a turbomachine A stator vane assembly for a turbomachine comprising a plurality of circumferentially arranged stator vanes (32), the axial position of the stator vanes (32) and/or the pitch angle circumferentially between adjacent stator vanes (32) is varied c... | 10/10/2006 |
| 7097420 | Methods and apparatus for assembling gas turbine engines A method of assembling a gas turbine engine includes providing a plurality of stator vane sectors that each include an equal number of stator vanes that are circumferentially-spaced such that a first circumferential spacing is defined between each pair of adjacent s... | 08/29/2006 |
| 7094027 | Row of long and short chord length and high and low temperature capability turbine airfoils A gas turbine engine turbine stage has an annular row of turbine airfoils including a first plurality of first airfoils having a first chord length and a second plurality of second airfoils having a second chord length shorter than the first chord length. At least o... | 08/22/2006 |
| 7029227 | Structure comprising a rotor and fixed perturbation sources and method for reducing vibrations in said structure A method of reducing vibration in a structure comprising at least one rotor (101j) and a fixed set of sources of disturbance (102j) liable to give rise to disturbances in the fluid flow (11) that cause the rotor to vibrate,... | 04/18/2006 |
| 6905303 | Methods and apparatus for assembling gas turbine engines A method of assembling a gas turbine engine includes coupling an inner engine casing to an outer engine casing such that an annular flow path is defined therebetween, coupling a plurality of circumferentially-spaced support struts between the inner and outer casings... | 06/14/2005 |
| 6439838 | Periodic stator airfoils A stator includes a row of airfoils extending inwardly from a casing. The airfoils are spaced apart circumferentially from each other at a spacing varying in turn around the perimeter of the casing for reducing vibratory excitation of a downstream rotor s... | 08/27/2002 |
| 6402458 | Clock turbine airfoil cooling A turbine includes three rows of airfoils which receive in sequence hot combustion gases during operation. The third row airfoils are clocked circumferentially relative to the first row airfoils for bathing the third row airfoils with relatively cool wake... | 06/11/2002 |
| 6203274 | Steam turbine The present invention is intended to implement a high-temperature, high-pressure, high-output, high/low-pressure integrated steam turbine provided with a turbine rotor formed as an integral rotor member. It is provided with a high-pressure turbine (3) to which... | 03/20/2001 |
| 6030286 | Centrifugal blower having a plurality of sub blades In a centrifugal blower in which the outer periphery of an intake opening is arranged outside of the inner edge of a main blade, a large number of sub blades are provided in the intake opening at a location corresponding to the main blade. The sub blades ... | 02/29/2000 |
| 6017191 | Axial ventilator housing This invention relates to an axial fan housing having a metallic shielding grating covering an air passage opening, wherein the grating is formed with a series of vane-like guide bars arranged in two or more concentric circular series. The number of guide... | 01/25/2000 |
| 6017186 | Rotary turbomachine having a transonic compressor stage A rotary turbomachine, and particularly a turbojet engine, has a compressor stage that is especially adapted for operation in the transonic region. The compressor stage includes a rotor (1) having a hub (2) and a plurality of compressor blades (3) extendi... | 01/25/2000 |
| 5984631 | Tandem turbine-blade cascade A tandem turbine-blade cascade for a turbine, turbo-engine or power engine includes at least two rows of blades disposed substantially directly in line with one another in the rotor or stator. The second row of blades has a larger number of blades than th... | 11/16/1999 |
| 5772395 | Vacuum pumps A vacuum pump assembly which comprises at least two cylinders of different diameters and arranged coaxially relative to each other to define an annular space therebetween and a helical member positioned within the space to define a helical path between th... | 06/30/1998 |
| 5470200 | Guide vanes for axial fans A guide vane arrangement for axial fans, intended to translate the rotational component of the gas flow velocity after passage through the impeller (1) into a substantially axial velocity, including a ring (2) of guide vanes disposed downstream of the fan... | 11/28/1995 |
| 5342167 | Low noise fan An axial flow fan includes blades mounted on a hub and extending radially outward to a shroud disposed around the hub. Pairs of stators are connected to the shroud at positions angularly spaced about the inner periphery of the shroud. Each pair of stators... | 08/30/1994 |
| 5123241 | System for deforming a turbine stator housing A system for deforming a turbine stator housing is disclosed which maintains a substantially uniform radial clearance between a stator and a rotor under all operating conditions of a turbojet engine. The system deforms the turbine stator housing so that i... | 06/23/1992 |
| 4780057 | Partial arc steam turbine An improved partial arc admission system for a high pressure steam turbine, the system having a plurality of nozzle blade groups the blade aspect ratio of blades in each group vary according to the maximum pressure drop across each nozzle blade group.... | 10/25/1988 |
| 4729714 | Built-in fan In an axial fan whose fan wheel is retained in a tubular member by spokes, the blade edges of the individual fan blades which face the spokes are constructed geometrically different from one another.... | 03/08/1988 |
| 4492518 | Gas turbine engine bearing support structure A gas turbine engine bearing support structure comprises a central hub which carries a bearing and which is supported by a plurality of spokes from a ring member. The majority of the spokes are radially extending so that each is perpendicular to an imagin... | 01/08/1985 |
