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| Number | Title | Issue Date |
| 8105038 | Steam turbine, and intermediate support structure for holding row of long moving blades therein A row of moving blades for a steam turbine has moving blades elongated radially which are arranged peripherally around and secured to a turbine rotor. The row also has an intermediate support structure for holding the blades to each other at a radially intermediate ... | 01/31/2012 |
| 7713028 | Turbine blade assembly A turbine blade assembly has a plurality of blades mounted on a central rotor. Each of the blades has a proximal section and a variable pitch section. A number of stays extend in groups from the central rotor to converge and terminate on an associated one of the bla... | 05/11/2010 |
| 7104752 | Braided wire damper for segmented stator/rotor and method The segments of the vanes of a stator and the blades of a rotor for a gas turbine engine are dampened by utilizing braided wire cable that is affixed to adjacent segments such that each of the wire strands forming the cable is allowed to move relative to each other ... | 09/12/2006 |
| 7014425 | Low pressure fan with Y-shaped blades A fan 10 includes a central hub 14, an outer ring structure 18, and a plurality of fan blades 12. Each blade is of generally Y-shaped configuration having first and second separate branches 12a, 12b, respective... | 03/21/2006 |
| 6884035 | Fan blade attachment A ceiling fan comprising a plurality of fan blades, each positioned in a slot of a corresponding bracket attached to a rotatable hub. For each fan blade, a brace connects a mid-section of the fan blade to the corresponding bracket. The brace and bracket increase the... | 04/26/2005 |
| 6561765 | Fuel pumps with reduced contamination effects A vehicle regenerative-type fuel pump which reduces the possible accumulation and effects of contamination relative to impellers with outer ring members. The impellers for the pump have outer ring members with non-uniform configurations (slanted, curved, ... | 05/13/2003 |
| 6514052 | Two sided radial fan for motor cooling A two sided radial fan draws cooling air into axially opposite ends of a dynamoelectric device drawing the flow of air into one axial end of the device and directing the flow of air over the device exterior surface, and drawing a second flow of air into a... | 02/04/2003 |
| 6406263 | Gas turbine shaft pilot system with separate pilot rings A turbine assembly comprising a first rotatable component having a first lip with a first axial facing surface and a second rotatable component having a second lip with a second axial facing surface. The components are held together by an axial load so th... | 06/18/2002 |
| 6102661 | Propeller with annular connecting element interconnecting tips of blades A propeller (10) including a hub (11), a plurality of blades (13) extending outwardly from the hub (11) and part annular connecting elements (17) which interconnect tips (16) of adjacent blades (13). The trailing edges (21) of the elements (17) extend fro... | 08/15/2000 |
| 6082970 | Vibration attenuation arrangement for rotor blades An arrangement for attenuating vibrations of blades attached to a peripheral surface of a rotor of an axial turbine. A through hole is formed in each rotor blade in a generally thickness direction of the blade so that the through holes in combination defi... | 07/04/2000 |
| 6024536 | Device for introducing and discharging cooling air The object of the invention is to prevent the quantity of airflow by a fan from decreasing in dependence on the distance between the fan and obstacles such as an engine in a device for introducing and discharging cooling air having a shroud with a high co... | 02/15/2000 |
| 6004097 | Coal mill exhauster fan An improved coal mill exhauster fan having an elongated, conical hub welded to the blades and engaging the rear shroud plate to eliminate air gaps along the rear of the fan assembly and to assist in axial to radial directional changes of the coal flow; tw... | 12/21/1999 |
| 5984638 | Turbomachine radial impeller vibration constraining and damping mechanism A compressor blade vibration reduction mechanism for a high-speed radial impeller for minimizing fatigue failures from various excitation sources. The vibration reduction mechanism includes a plurality of loose-fitting lashing pins coupling each impeller ... | 11/16/1999 |
| 5941688 | Fibre-reinforced rotor stage for a turbomachine A turbomachine rotor stage having a thin annular body comprising a metal alloy part reinforced by at least one fibrous ring which has a radial height h of at least 1.5 times its axial width l and which is embedded in the metal alloy part so that it projec... | 08/24/1999 |
| 5829956 | Fan blade assembly A fan blade assembly having a plurality of arranged about a central hub having an axis of rotation, the blades projecting from the hub radially outward from the axis of rotation. Each blade has a blade length, with a proximal end attached to the central h... | 11/03/1998 |
| 5823749 | Vertical-axis wind turbine with two-phase sails A vertical axis wind turbine of the type having collapsible fabric sails (10) that reside on the rim of a horizontally disposed square rotor wheel (12,14) supported on a pivotally operated vertical mast (30). Four sails (10) are joined in oppositely dispo... | 10/20/1998 |
| 5800128 | Fan with individual flow segments connected to a hub with a prefabricated thermoplastic strip This fan is provided with an impeller (1), having a hub (2), and with a casing surrounding the impeller (1). The impeller (1) has individual flow segments (4) connected to the hub (2) and to one another and in each case enclosing a flow duct (5), and a sh... | 09/01/1998 |
| 5542819 | Ceiling fan safety tether A ceiling fan safety tether to be used with a conventional ceiling fan. The ceiling fan safety tether retains a fan blade in close proximity to the fan motor thereby preventing the fan blade from becoming a flying projectile should a break in a fan blade ... | 08/06/1996 |
| 5531567 | Vertical axis wind turbine with blade tensioner A Darrieus-type vertical axis wind turbine with tensioned blades is disclosed, along with various mechanisms for tensioning the blades. When the wind turbine is stationary in high wind conditions, the blades are tensioned to resist buckling. When the wind... | 07/02/1996 |
| 5385448 | Propeller shaped agitator A multibladed propeller shaped agitator includes a plurality of impellers having made blades, blade roots and hub segments made of plastic material. A metallic hub element is inlaid only in the hub segment. The impellers are connected to the hub segment s... | 01/31/1995 |
| 5277550 | Agitating vane A plurality of flat plates are laterally disposed at an outer circumference of a hub and auxiliary vanes are disposed in parallel to at least side edges of each of said flat plates while being spaced apart from the side edges. Accordingly, an occurrence o... | 01/11/1994 |
| 5253978 | Turbine blade repair A method of repairing a turbine blade comprising the steps of ascertaining a normal vibration characteristic of the blade, separating an outer end part of the blade from a residual inner part of the blade and subsequently securing a new end part to the re... | 10/19/1993 |
| 4786235 | Wind-engine A wind-engine of the type consisting of several wind devices rotatably mounted at several independent stages, which comprises the combination of vertical props (1) disposed within a circle (4); at each stage (2), crossbeams (5) connected, on one hand, to ... | 11/22/1988 |
| 4509238 | Method for fabricating a steam turbine diaphragm Blades in the steam path of a steam turbine diaphragm are assembled into slots in full circular bands and are structurally bonded thereto by welding. After stress relief, the bands are each separated into two 180 degree pieces by line cuts which pass betw... | 04/09/1985 |
| 4118144 | Support means for a windmill Apparatus for deriving a rotational motion from air currents including first and second coaxial annular members spaced from each other along their axes by axial struts and a plurality of blade assemblies carried by the struts. In a preferred embodiment, t... | 10/03/1978 |
| 4036916 | Wind driven electric power generator A wind driven electric power generator having a shroud arranged in a path of fluid flow. Within the shroud is disposed a stationary shaft supporting a wind generator assembly. The shroud can be the veil of a conventional cooling tower, with the wind gener... | 07/19/1977 |
| 4029435 | Retractable blade for a helicopter rotor A helicopter rotor having retractable blades each having a three dimensional truss including flexible cables which connect a blade member with a pitch member directly secured to a rotor hub, the cables providing for retraction of the blade member to a sto... | 06/14/1977 |
| 4028005 | Impeller blade reinforcement A drum-type impeller for a centrifugal blower is provided with reinforcement against damage by centrifugal force at high peripheral speeds by reinforcing means such as gussets or rods running from the underside of each blade toward either or both of the h... | 06/07/1977 |
| 3942839 | Spoked wheel and method of making same A spoked wheel and method of making same including a peripheral rim, a central hub and a plurality of spokes interconnecting the hub and rim in which the hub is provided with spaced flanges interconnected by a tubular spindle and the spokes are in the for... | 03/09/1976 |