Fluid reaction surfaces (i.e., impellers) inventions 09/07

20070224048 - Advanced turbulator arrangements for microcircuits: A passageway is provided through which a cooling fluid flows in a first direction. The passageway has a plurality of trip strips positioned within the passageway. Adjacent one of the trip strips are oriented to converge towards each other at a first end to form an apex portion and to... Agent: Bachman & Lapointe, P.C. (p&w)

20070224047 - Tip clearance centrifugal compressor impeller: An impeller includes first and second impeller portions that are secured to one another. An interior cavity is formed between the first and second portions. The first impeller portion supports multiple blades. The first and second impeller portions respectively include first and second surfaces that are secured to one another... Agent: Carlson, Gaskey & Olds/pratt & Whitney

20070224049 - Steam-cooled gas turbine bucker for reduced tip leakage loss: A bucket for a steam turbine includes an airfoil portion having a radially outer tip, the radially outer tip having a thermal barrier coating applied thereto, and wherein the thermal barrier coating is resurfaced to form at least one ridge along the radially outer tip.... Agent: Nixon & Vanderhye P.C.

20070217912 - Control unit for rotor blade adjustment: In an electrohydraulic control unit for rotor blade adjustment of a wind farm via a hydraulic cylinder, the hydraulic cylinder has one piston chamber and one piston rod chamber. Via an inflow valve assembly, a pressure fluid connection can be established between the pump and the piston chamber, while via... Agent: Striker, Striker & Stenby

20070217913 - Turboprop unit for aircraft with improved aerodynamic installation: A turboprop engine includes a power jet mounted coaxially to the engine axis (X-X′), and has a fan case and a gas ejecting system provided with two afterbody half-cowlings (10b) each of which is pivotable around an axis (A2) between open and closed positions, wherein the half-cowlings are connected to... Agent: Young & Thompson

20070217914 - Dovetail structure of fan: The invention provides a dovetail structure of a fan which attaches a fan 20 having an inlet hub diameter smaller than an outlet hub diameter to a portion around a discoid disc rotationally driven by a turbine. The disc 10 has a plurality of dovetail grooves 12 extending at a... Agent: Griffin & Szipl, PC

20070217915 - Dovetail structure of fan: The invention provides a dovetail structure of a fan which attaches the fan 20 having an inlet hub diameter smaller than an outlet hub diameter to a portion around a discoid disc 10 rotationally driven by a turbine. The disc 10 has a plurality of main dovetail grooves 12 extending... Agent: Griffin & Szipl, PC

20070217916 - Gas turbine vane: A gas turbine vane, especially a vane pertaining to an aircraft engine, comprising a blade and a vane footing. The blade is defined by a flow inlet edge or a front edge, a flow outlet edge or a rear edge, and a blade surface extending between the front edge and... Agent: Davidson, Davidson & Kappel, LLC

20070217917 - Rotary fluid dynamic utility structure: A rotary fluid dynamic utility structure (1) comprising at least two blades, wherein each blade comprises a multiplicity of elemental airfoils (5), a base, a tip (35), a face (14), a back (7), a leading edge (15), a trailing edge (16), and a longitudinal twist. The at least two blades... Agent: Albert O Cota

20070217918 - Lightweight composite truss wind turbine blade: A lightweight wind turbine blade formed with a truss support structure assembly of composite truss joints including composite spar and cross members attached to and supporting in spaced relation a spine of lightweight rib panels. The rib panels are oriented in parallel spaced relation from one another and individually molded... Agent: Fulwider Patton LLP

20070212228 - Moving blade for a turbomachine, the blade having a common cooling air feed cavity: A moving blade for a turbomachine, the blade comprising an aerodynamic surface extending radially between a blade root and a blade tip, and at least one internal cooling circuit made up of at least one radial cavity, at least one air admission opening formed in the blade root and opening... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070212220 - Controlled propeller pitch lock actuation system: A variable pitch propulsor system with a propeller pitchlock system having a pitchlock solenoid valve located in communication with a pitchlock pressure circuit to selectively actuate pitchlocking in response to a controller. The pitchlock solenoid valve includes an electro-mechanical device which is normally closed but may be commanded to electrically... Agent: Carlson, Gaskey & Olds, P.C.

20070212221 - Propeller pitch lock system: A variable pitch propulsor system with a propeller pitchlock system which utilizes a follower style pitchlock ballscrew screw which tracks the actuator axial stroke. The pitchlock system transfers the propeller yoke loads, from the ballscrew ballnut to the pitchlock nut allowing the propeller to pitchlock; utilizes the same screw thread... Agent: Carlson, Gaskey & Olds, P.C.

20070212222 - Machine washable and tumble dry percale fabric ceiling fan cover: A ceiling fan blade cover includes a lightweight percale cotton cloth cover having an oblong-shaped body having an edge that is sewn to prevent raveling and to create a stronger foundation. An elastic back connected to the edge produces an elastic circumference of the cover. An elastic strap having two... Agent: Lisa White-burnett

20070212224 - Protective boot for a helicopter pitch link: A protective boot for a helicopter blade pitch link assembly as described herein includes a split joint that allows for easy removal and replacement of the protective boot. The protective boot is less expensive to replace, requires less manpower, and eliminates the need for post-maintenance test flights, which might otherwise... Agent: Ingrassia Fisher & Lorenz, P.C. (boeing)

20070212223 - Rotor blade tip planform: A main rotor blade incorporating a rotor blade tip region having a tip chord and a tip taper such that the ratio of the main rotor blade chord to the tip chord is approximately 0.30. The tip taper ratio preferably providing an approximately 28% area of reduction in said outer... Agent: Carlson, Gaskey & Olds, P.C.

20070212225 - Vawt cluster and individual supporting arrangements: One or more vertical axis wind turbines (VAWT), preferably of the Savonius type, are mounted in a relatively simple and inexpensive manner. For a single VAWT a center pole may be disposed within a hollow shaft of the VAWT with at least upper and lower bearings acting between the shaft... Agent: Robert A. Vanderhye

20070212226 - radially-compact assembly between a turbine shaft and a stub axle of a turbomachine compressor shaft: The invention relates to an assembly between a turbine shaft and a stub axle of a turbomachine compressor shaft, the assembly comprising a substantially cylindrical compressor shaft stub axle, a substantially cylindrical turbine shaft disposed coaxially inside the compressor shaft stub axle, means for transmitting torque between the turbine shaft... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070212227 - Pedestal for fan: A fan (10) in disclosed which includes a fan motor (11), a motor housing (12), a plurality of fan blades (13). The fan also includes an elongated pole (16) and a pedestal (17). The pedestal includes a main housing (18) and a lower portion (19). The main housing has a... Agent: Baker, Donelson, Bearman, Caldwell & Berkowitz

20070207033 - Methods and devices for improving efficiency of wind turbines in low speed sites: The present invention is for an apparatus and method for a passive pitchable device for wind turbines comprising: a camshaft having cam grooves engraved; a cylindrical shell; an axial compression spring; said blade assembly and said cylindrical shell are fastened together by screws; a plurality of balls that roll along... Agent: Allan Howard Grant

20070207034 - Steam turbine blade, and steam turbine and steam turbine power plant using the blade: A steam turbine blade includes a blade; a shroud attached to a tip of the blade; a blade root projecting toward the radial inner circumferential side of a turbine rotor so as to be fitted into a blade groove provided in an outer circumferential portion of a turbine rotor; and... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20070207035 - Hp turbine blade airfoil profile: A single stage high pressure turbine blade 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 smoothly connected by an... Agent: Ogilvy Renault LLP (pwc)

20070207036 - 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 smoothly connected by an... Agent: Ogilvy Renault LLP (pwc)

20070207037 - Lp turbine vane airfoil profile: A single stage low 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 smoothly connected by an... Agent: Ogilvy Renault LLP (pwc)

20070207038 - Turbine exhaust strut airfoil profile: A turbine exhaust thin strut includes an airfoil section 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 smoothly connected by an appropriate... Agent: Ogilvy Renault LLP (pwc)

20070207039 - Gas turbine engine simulator: A gas turbine engine simulator comprising a simulator rotor disc which has substantially the same maximum external dimensions as a rotor disc and is manufactured from a material which has a density of less than 220 kg/m3. The simulator rotor disc is manufactured from a foamed plastic material with a... Agent: Oliff & Berridge, PLC