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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8147187 | Control of variable-pitch blades A device for controlling a pivot of a variable-pitch blade in a stator of a turbomachine compressor is disclosed. The device for controlling a pivot of a variable-pitch blade includes a control lever and a pivot with a bottom end and a top end. The top end is connec... | 04/03/2012 |
| 7942631 | Method and apparatus for powering a pitch control system A pitch control system for a wind turbine having a motor including an armature, a winding, and a plurality of switching components configured to control a first current through the armature independently of a second current through the winding. ... | 05/17/2011 |
| 7365571 | Input buffer with wide input voltage range The input buffer is driven by a data input/output supply voltage. The input buffer generates an output signal from an input signal that swings between the data input/output supply voltage and a data input/output ground voltage. ... | 04/29/2008 |
| 7351029 | Rotary vacuum blower An impeller, set in rotation by a motor, provided with blades and enclosed in a casing which defines a circumferential annular conduit in which the blades turn. The annular conduit exhibits two openings, respectively an induction mouth for aspirating fluid from outs... | 04/01/2008 |
| 7323791 | Louvered horizontal wind turbine A wind turbine, including: a rotatable frame; a plurality of airfoils extending in a direction parallel to an axis of rotation of the rotatable frame; and an enclosure surrounding the rotatable frame, wherein the enclosure comprises a plurality of moveable members c... | 01/29/2008 |
| 7223065 | Steam turbine The invention relates to a steam turbine comprising a valve arrangement for regulating the admission of live steam into the turbine consisting of two serially connected regulating valves. The two regulating valves enable a step-by-step separation of the live steam a... | 05/29/2007 |
| 7165936 | Adjustable flow turbine nozzle A multiple-passage turbine nozzle with desired predetermined flow properties may be provided with an adjustment member in one or more of its passages to limit the flow therethrough. Turbine nozzle flow is an important performance characteristic that may be difficult... | 01/23/2007 |
| 7150151 | Method of controlling the exhaust gas temperature for after-treatment systems on a diesel engine using a variable geometry turbine A method for controlling a variable geometry turbine of a turbocharger to increase the temperature of the exhaust gas delivered to an after-treatment system. In one form the method includes reducing a fluid flow area to the turbine below a normal size and bypassing ... | 12/19/2006 |
| 7065968 | Steam turbine In a steam turbine plant in which a turbine casing containing a turbine is constituted of an upper-half casing and a lower-half casing, nozzles are provided to the upper-half casing and a steam supplied through main steam piping lines are deliveried into the upper-h... | 06/27/2006 |
| 6951443 | Wind turbine ring/shroud drive system A wind turbine capable of driving multiple electric generators having a ring or shroud structure for reducing blade root bending moments, hub loads, blade fastener loads and pitch bearing loads. The shroud may further incorporate a ring gear for driving an electric ... | 10/04/2005 |
| 6939103 | Wind power installation with multiple blade adjusting devices The present invention concerns a wind power installation having a rotor with at least one blade and an adjusting device for the rotor blade. An adjusting device with more than one drive for one rotor blade is provided. By virtue of that arrangement each drive only h... | 09/06/2005 |
| 6899513 | Inflatable compressor bleed valve system A compressor bleed valve system for bleeding air from a gas turbine engine compressor comprises a bladder inflatable between at least a collapsed position and an expanded position for selectively opening and closing a compressor airbleed passage. ... | 05/31/2005 |
| 6758652 | Apparatus for choking the control stage of a steam turbine and steam turbine A turbine, intended to be used in a plant of the geothermal type, comprises an apparatus for the choking of the control stage. The latter provides closure means for closing at least one nozzle of the first stage of the turbine, the said nozzles facing a final sectio... | 07/06/2004 |
| 6638014 | Valve arrangement for a power plant The invention relates to a valve arrangement (1), in particular for a power plant. A housing (2) contains a shut-off valve (3) for shutting off a fluid flow, a control valve (4) for controlling the fluid flow through a housing outlet (8) and a bypass valv... | 10/28/2003 |
| 6625984 | Variable geometry nozzle for radial turbines A variable geometry nozzle suitable for a radial turbine in a turbocharger for an internal combustion engine. The turbine inlet, turbine outlet or both include a vane assembly having a housing and an adjustable cartridge movable in the housing. Each cartr... | 09/30/2003 |
| 6599083 | Cooling system and method for cooling a turbo-machine housing A cooling system for cooling a housing of a turbo-machine comprising a feeder air line connected to the feeder air connection of the housing, a waste air line connected to the waste air connection of the housing, a recirculating air line, a fan position i... | 07/29/2003 |
| 6572328 | Steam turbine and method of feeding bypass steam A steam turbine for a combined gas and steam-turbine power plant process, including at least one valve arrangement for the controlled feeding of live steam into the steam turbine is disclosed. The valve arrangement has a quick-closing valve and at least o... | 06/03/2003 |
| 6381944 | Method and apparatus for compressing gaseous fuel in a turbine engine A gas turbine engine includes a rotatable impeller having a plurality of vanes with inlet and outlet ends. A plurality of diffuser channels are spaced apart radially beyond the outlet ends. A movable source of gaseous fuel is positioned adjacent the inlet... | 05/07/2002 |
| 6375412 | Viscous drag impeller components incorporated into pumps, turbines and transmissions The present invention is for the efficient transfer of mechanical power through a fluid medium. The various embodiments of the present invention exploit the natural physical properties of fluids to create a more efficient means of driving fluids as well a... | 04/23/2002 |
| 6302644 | Steam turbine Steam turbines with or without a control stage are constructed with the same number of control valves. There are preferably two control valves in each case. The valve subassembly, the turbine outer casing and parts of the turbine inner casing are of ident... | 10/16/2001 |
| 6099246 | Admission section of a turbine casing In order to be able to realize especially high live-steam parameters (i.e. live-steam temperatures and live-steam pressures) in a steam turbine, an admission section of the turbine casing which has a number of throughflow openings and is intended for a va... | 08/08/2000 |
| 6071073 | Method of fabricating a turbine inlet casing and the turbine inlet casing A method for fabricating a turbine inlet casing has several steps. Providing a prismatic block having an upstream face, a downstream face, and a central axis perpendicular to the upstream and downstream faces. Cutting a circular shaft clearance opening th... | 06/06/2000 |
| 6039534 | Inlet guide vane assembly An inlet guide vane assembly for a centrifugal compressor includes a guide vane housing having an inlet side for receiving a fluid passing through the compressor at a first flow angle, an outlet side remote from the inlet side and a central axis extending... | 03/21/2000 |
| 5993152 | Nonlinear vane actuation An actuation system for variable stator vanes pivotally mounted in a casing includes a plurality of levers joined to the respective vanes. An actuation ring coaxially surrounds the casing adjacent to the levers. A plurality of circumferentially spaced apa... | 11/30/1999 |
| 5980199 | Performance centrifugal blower apparatus including at least two suction inlets, and associated blower method A centrifugal blower apparatus suitable for industrial uses has a least a delivery outlet and at least two fluid inlets disposed on either side of a blower wheel suitable for being rotated by a drive system. Each inlet is associated with a respective cont... | 11/09/1999 |
| 5927943 | Inlet casing for a turbine A turbine with the improved inlet casing in accordance with the present invention includes a shaft which extends along and rotates about a central axis. The turbine also includes at least one rotor wheel which is mounted on and extends radially outward fr... | 07/27/1999 |
| 5823742 | Variable and bidirectional steam flow apparatus and method A valve apparatus for a turbomachine comprises a manifold casing, a valve lift assembly, and a plurality of valve assemblies. The manifold casing defines a valve inlet chamber and has a top wall and a bottom wall with a plurality of vertically disposed op... | 10/20/1998 |
| 5683225 | Jet engine variable area turbine nozzle A turbine nozzle for a gas turbine engine subassembly having an axial turbine. The turbine nozzle airfoil-shaped vanes are fixedly attached to one or both of the annular inner and outer casings. Apparatus is provided to vary the vane airflow passage area ... | 11/04/1997 |
| 5651661 | Multi-stage rotary fluid handling apparatus Rotary fluid handling apparatus employing a wheel to provide multi-stage compression or expansion. A wheel having a first set of vanes includes a shroud about those vanes with a second set of vanes outwardly of the shroud. One set of vanes provides for lo... | 07/29/1997 |
| 5489189 | Turbo-engine having a variable pitch propeller The invention relates to turbo-engine having a variable-pitch propeller. An adjustment spindle is disposed inside the shaft that carries the variable-pitch propeller. The adjustment spindle is connected to a step-down transmission, which is affixed in the... | 02/06/1996 |
| 5235803 | Auxiliary power unit for use in an aircraft Inefficiencies in the operation of auxiliary power units producing electric and hydraulic power along with bleed air resulting from independence in the demand for power may be minimized in a system including at least one bleed air consuming system (84, 86... | 08/17/1993 |
| 5207558 | Thermally actuated vane flow control Thermally actuated flow diverters for gas turbine engines are provided which include an arrangement of vanes in spaced overlapping array, which direct, e.g. coolant air flow to rotating engine components, each vane having 3 foil components joined at 3 hin... | 05/04/1993 |
| 5183381 | Variable geometry turbine inlet wall mounting assembly A mounting assembly for a movable annular wall member of an inlet passageway of a variable geometry turbine. The inlet passageway is defined between the movable wall and a facing wall. The wall member is formed from a sheet material and is supported on a ... | 02/02/1993 |
| 5061152 | Mounting for variably settable stator blades in a compressor Each blade of a stage of variably settable stator blades in a compressor of gas turbine engine is supported at its outer end by a journal which is rotatably mounted in a radial bore in a parallelepipedic journal box of trapezoidal section mounted in a hou... | 10/29/1991 |
| 4995786 | Dual variable camber compressor stator vane A compressor stator vane for a gas turbine engine comprised of a leading edge section and a trailing edge section and constructed so that either or both sections may be rotated about a common axis of rotation to vary vane camber with torque for rotating t... | 02/26/1991 |
| 4984965 | Variable geometry turbine inlet wall mounting assembly A mounting assembly for a movable annular wall member of an inlet passageway of a variable geometry turbine. The inlet passageway is defined between the movable wall and a facing wall. The wall member is formed from a sheet material and is supported on a ... | 01/15/1991 |
| 4874287 | Variable-geometry turbocompressor A variable-geometry turbocompressor is provided which includes a tandem variable stator downstream of a rotor stage. The tandem stator includes an inlet stator cascade and an outlet stator cascade arranged adjacent one another and each including variable ... | 10/17/1989 |
| 4871295 | Modular rankine cycle vapor turbine A Rankine cycle power plant includes a plurality of vapor turbine modules, each having a shaft rotatably mounted in a housing, and a pair of axially spaced discs coupled together and mounted on the shaft for rotation therewith. Axial flow turbine blades a... | 10/03/1989 |
| 4850793 | Steam chest modifications for improved turbine operations Existing steam chests having a plurality of valves which are incapable of operation by individual high pressure valve actuators may be modified to provide apparatus for transferring operation of a steam turbine at less than a full load betweeen a full-arc... | 07/25/1989 |
| 4847039 | Steam chest crossties for improved turbine operations A method and apparatus for reducing thermal stress in steam turbines having steam chests with a plurality of linearly-arranged valves controlling respective nozzle chambers. By crosstying selected pairs of the valves, and selectively admitting steam throu... | 07/11/1989 |
