Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8137062 | Turbomachine nozzle A turbomachine includes a housing, and a plurality of turbomachine nozzles. At least one of the plurality of turbomachine nozzles includes a body having a first surface and an opposing second surface that extend between a first end and a second end. At least one of ... | 03/20/2012 |
| 7901179 | Axial turbine An axial turbine includes a plurality of stages each comprising a plurality of stationary blades arranged in a row along the turbine circumferential direction and a plurality of moving blades in a row parallel to the stationary blades, each of the moving blade being... | 03/08/2011 |
| 7828520 | Fan A fan includes a fan blade wheel and a fan frame. A fan wheel seat is disposed at the center of the air outlet of the fan frame and the air outlet faces a heat generating component. An air inlet of the fan frame is disposed opposite to the air outlet. The fan wheel ... | 11/09/2010 |
| 7794202 | Turbine blade A turbine blade is provided, comprising a stator-side end located toward a stationary stator cylinder of the turbine, a rotor-side end located toward an axial rotor of the turbine, a leading edge located between the stator-side end and the rotor-side end, a trailing... | 09/14/2010 |
| 7566200 | HP turbine vane airfoil profile A single stage high pressure turbine vane includes an airfoil having a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoot... | 07/28/2009 |
| 7300247 | Axial flow turbine An axial flow turbine provided with a stage composed of a turbine nozzle and a turbine rotor blade arranged in an axial flow direction. Both end portions of a nozzle blade of the turbine nozzle are supported by a diaphragm inner ring and a diaphragm outer ring, and ... | 11/27/2007 |
| 7229248 | Blade structure in a gas turbine In the blade structure in a gas turbine, front-edge including angles are made large. As a result, a curve of a relative relationship between incidence angles ic1 and is1 and pressure loss becomes mild. Entrance metal angles are made small. As a result,... | 06/12/2007 |
| 7195456 | Turbine engine guide vane and arrays thereof An exit guide vane array for a turbine engine includes a set of guide vanes 28 having a solidity and defining fluid flow passages 74 with a chordwisely converging forward portion 80. The high solidity and convergent passage portion 80 res... | 03/27/2007 |
| 7181914 | Diffuser for gas turbine engine A gas turbine engine pre-diffuser 40 is generally annular, including radially inner and radially outer walls 40 and 42 and a generally cylindrical midline 48 defined between the walls. The pre-diffuser 40 includes a central member ... | 02/27/2007 |
| 7168918 | High performance cooling fan A cooling fan comprises a rotor configured to generate airflow. The cooling fan further comprises an outlet guide vane adapted to receive the airflow generated by the rotor and to orient the airflow in a substantially axial direction relative to the rotor. The cooli... | 01/30/2007 |
| 7121792 | Nozzle vane with two slopes A nozzle vane for a rotary disk of a turbomachine, the vane comprising pressure side and suction side surfaces extending radially between a base and a tip and longitudinally between a leading edge and a trailing edge, with a plurality of vane sections having centers... | 10/17/2006 |
| 7052237 | Turbine blade and turbine The pressure distribution curve of the blade suction-side surface excluding the leading edge portion and the trailing edge portion drops in two stages in the area from the leading edge to the minimum pressure point. ... | 05/30/2006 |
| 7048509 | Axial flow turbine In the axial turbine according to the present invention, a nozzle blade 1 and/or a movable blade 5 has a profile in which a throat-pitch ratio “s/t” is maximized at a blade-central portion in height, wherein “s” being a shortest distance betwee... | 05/23/2006 |
| 7025576 | Pump with axial conduit An air pump including an outer housing and an inner housing positioned within the outer housing, the inner housing and outer housing defining an air conduit therebetween, a motor positioned within the inner housing, a vane occupying a majority of the fluid conduit, ... | 04/11/2006 |
| 7021888 | Ultra-high speed vacuum pump system with first stage turbofan and second stage turbomolecular pump An ultra-high speed vacuum pump evacuation system includes a first stage ultra-high speed turbofan and a second stage conventional turbomolecular pump. The turbofan is either connected in series to a chamber to be evacuated, or is optionally disposed entirely within... | 04/04/2006 |
| 6948907 | Vane and/or blade for noise control Exemplary turbine blade outer edges, exemplary vane inner edges, exemplary systems and exemplary methods are disclosed that help to reduce noise in variable geometry turbines and optionally other turbines wherein a turbine blade interacts with an object. Other exemp... | 09/27/2005 |
| 6905307 | Stationary vanes for turbines and method for making the same The stator vane is provided with a leading edge which is cut into a different depth in dependence on a span-wise position so that a blade inlet angle may vary along a span-wise direction according to a prescribed pattern. By thus optimizing the depth of the cut alon... | 06/14/2005 |
| 6902373 | Sheet metal exhaust adapter for draft inducers An exhaust adapter for use with a draft inducer having a blower housing with a rectangular blower outlet. The exhaust adapter provides a transition from the rectangular outlet of the blower housing and a round exhaust pipe. The exhaust adapter includes a transition ... | 06/07/2005 |
| 6755612 | Guide vane for a gas turbine engine A guide vane is adapted to be mounted in an annular fluid-conveying duct of a gas turbine engine, and has an aerofoil part which extends radially across the duct when the guide vane is thus-mounted. On a transverse cross-section relative to the direction of intended... | 06/29/2004 |
| 6722849 | Propeller for tubeaxial fan A tubeaxial fan (10) broadly including a cylinder (12), a propeller (14) rotatably supported in the cylinder (12), and a drive assembly (16) operable to rotate the propeller (14) is disclosed. The propeller (14) inclu... | 04/20/2004 |
| 6709233 | Aerofoil for an axial flow turbomachine A turbine stator vane for use in an axial flow gas turbine. The vane has an aerofoil, the pressure face of which is convex between platform and tip regions in a plane which extends both radially of the turbine and transversely of the general working fluid flow direc... | 03/23/2004 |
| 6554569 | Compressor outlet guide vane and diffuser assembly A gas turbine engine outlet guide vane assembly has annular inner and outer end walls, a flowpath between the inner and outer end walls, outlet guide vanes radially disposed between the inner and outer end walls, and boundary layer energizing means for en... | 04/29/2003 |
| 6461109 | Third-stage turbine nozzle airfoil The third-stage nozzles have vanes comprising airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in inches in Table I wherein Z is a perpendicular distance from a plane normal to a radius of the turbine c... | 10/08/2002 |
| 6375419 | Flow directing element for a turbine engine A flow directing element, such as a vane for a turbine engine compressor, has a variable chord to improve compressor surge margin without compromising compressor efficiency. The vane has an airfoil section (70) with a leading edge (80), a trailing edge (8... | 04/23/2002 |
| 6368055 | Turbine nozzle and moving blade of axial-flow turbine Turbine nozzles and turbine moving blades of an axial-flow turbine are provided which are capable of reducing a secondary flow loss with a simple structure. A nozzle blade passage formed by nozzle blades, an outer diaphragm ring and an inner diaphragm rin... | 04/09/2002 |
| 6354798 | Blade for a fluid-flow machine, and steam turbine A blade for a fluid-flow machine is directed along a blade axis. Cross-sectional profiles which are disposed at a distance from one another axially and at right angles to the blade axis are offset from one another equidirectionally in each case in a root ... | 03/12/2002 |
| 6126394 | Turbine nozzle and moving blade of axial-flow turbine Turbine nozzles and turbine moving blades of an axial-flow turbine are provided which are capable of reducing a secondary flow loss with a simple structure. A nozzle blade passage formed by nozzle blades, an outer diaphragm ring and an inner diaphragm rin... | 10/03/2000 |
| 6099248 | Output stage for an axial-flow turbine An output stage of an axial-turbine having a high channel divergence has a row of curved vanes and a row of narrowed twisted blades. The curved vanes include, in an axial direction, a positive sweep at their rotor-side end, head and a negative sweep at th... | 08/08/2000 |
| 6079948 | Blade for axial fluid machine having projecting portion at the tip and root of the blade A blade for an axial fluid machine comprises an effective blade portion having a root portion and a tip portion and projecting blade portions. The projecting blade portions are defined by axis reference lines extending to an upstream side with respect to ... | 06/27/2000 |
| 6036438 | Turbine nozzle An optimum axial distance is secured by varying the distance between a nozzle blade and a moving blade along the length of a nozzle blade (11). The nozzle blades (11) are curved so that a middle portion of each nozzle blade has a section (b2) dislocated i... | 03/14/2000 |
| 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 |
| 5951245 | Centrifugal fan assembly for an automotive vehicle A centrifugal blower assembly is disclosed. The blower assembly includes a centrifugal fan driven by an electric motor and a stationary device which imparts a predetermined amount of spin to a volume of air as the air enters the centrifugal blower assembl... | 09/14/1999 |
| 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 |
| 5716192 | Cooling duct turn geometry for bowed airfoil A bowed airfoil is provided which includes a plurality of passages disposed between a pressure side wall and a suction side wall. The pressure and suction side walls extend widthwise between a leading edge and a trailing edge, and spanwise between inner a... | 02/10/1998 |
| 5575620 | Turbine blade assembly A fixed blade assembly for an axial flow turbine, in which each blade (23) is secured between a radially inner ring (21) and a radially outer ring (22). The trailing edge (25) of each blade is straight and leans at an angle θ away from a radial line (28)... | 11/19/1996 |
| 5443590 | Rotatable turbine frame A rotatable turbine frame includes annular outer and inner bands having a plurality of circumferentially spaced apart struts extending therebetween. An annular drive shaft is fixedly joined to the inner band for transmitting output torque therefrom, and t... | 08/22/1995 |
| 5342170 | Axial-flow turbine An axial-flow turbine has at least one row of bowed guide vanes (7) and at least one row of rotor blades. The bowing of the guide vanes (7) over the vane height is selected at right angles to the chord and is directed towards the pressure side of the resp... | 08/30/1994 |
| 5249922 | Apparatus of stationary blade for axial flow turbine, and axial flow turbine An apparatus of stationary blade for an axial flow turbine includes a diverging flow channel for flowing an elastic fluid and stationary blades which are fixed at the diverging flow channel and are curved in perpendicular direction to the flow direction o... | 10/05/1993 |
| 4761115 | Axial-flow fan A frame-supported fan in which the mounting portions between the motor and the frame are formed in the shape of an arrowhead and/or are provided with sculptured edges extending to the frame or are provided with interfering bodies mounted to the outer ends... | 08/02/1988 |
| 4714407 | Aerofoil section members for turbine engines To minimize secondary losses and flow maldistribution, an aerofoil such as a gas turbine nozzle guide vane, is designed so that in the throat defined by the trailing edge of one aerofoil and the flank of the adjacent aerofoil, the local gas flow streamlin... | 12/22/1987 |
