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| Number | Title | Issue Date |
| 8100665 | Fan module A fan module, particularly for cooling motor vehicle engines allows for improved cooling of the fan motor. The fan housing (101) in which the fan motor (105) is arranged has fixed air-channeling elements (109) which are arranged in the region of... | 01/24/2012 |
| 8047803 | Fan apparatus A fan apparatus includes a fan section having a hollow housing with an inlet and an outlet, and a hollow duct section disposed on the outlet side of the fan section. The housing and the duct section are coupled by a coupling member. ... | 11/01/2011 |
| 8047802 | Course of leading edges for turbomachine components The course of the leading edges of turbomachine components, such as rotor blades and stator vanes is defined mathematically exactly and repeatedly as well as aerodynamically advantageously by the respective axial coordinate in the direction of the machine axis in re... | 11/01/2011 |
| 7946826 | Wind turbine rotor blade with a suction side winglet A rotor blade for a wind turbine is disclosed. The rotor blade may comprise a root portion, a tip, and a body extending between the root portion and the tip. The body may include a pressure side and a suction side. Additionally, a winglet may be defined by the body.... | 05/24/2011 |
| 7637722 | Marine propeller A marine propeller is provided with three blades, a skew angle of approximately 33 degrees, a rake angle of approximately 28.5 degrees, and a blade area ratio (BAR) of approximately 60 degrees. The rake is preferably progressive. Each of the blades is preferably tai... | 12/29/2009 |
| 7600980 | Cooling fan A cooling fan has a metal spacer, a boss made of Nylon integrally formed with the spacer by an insert molding and seven blades extending outward therefrom. A skew angle of about 30 degrees is provided at a connecting portion or a base end portion of the blade to the... | 10/13/2009 |
| 7438522 | Fan A fan has an air conveying conduit (16) and a fan wheel (22) arranged therein, which wheel is rotatable about a central axis (25) and is formed with a central hub (20; 120) having an outer periphery (27) on which fan blades (26 | 10/21/2008 |
| 7422420 | Axial fan An axial fan (1) rotating in a plane (XY) about an axis (2) comprises a central hub (3), a plurality of blades (4), which have a root (5) and a tip (6), the blades (4) being delimited by a convex leading edge (7 | 09/09/2008 |
| 7419359 | Axial impeller with enhance flow An axial impeller (1), with enhanced flow, rotating in a plane (XY) about an axis (2) comprises a central hub (3), whose diameter is smaller than the diameter of the drive motor (3a), a plurality of blades (4) having a base ... | 09/02/2008 |
| 7413410 | Ceiling fan blade A ceiling fan blade is disclosed that is twisted rather than flat and has a graduated dihedral. The dihedral is provided for a wider distribution of divergence of air in the space beneath the fan. The blade (10) is demarked to have three sections which includ... | 08/19/2008 |
| 7377751 | Cooling fan and shroud with modified profiles A cooling system includes a cooling fan with an outlet and an inlet and a shroud surrounding at least a portion of the cooling fan. The cooling fan includes a plurality of fan blades, and each fan blade includes an inlet portion and an outlet portion that define an ... | 05/27/2008 |
| 7374403 | Low solidity turbofan A turbofan includes a row of fan blades extending from a supporting disk inside an annular casing. Each blade includes an airfoil having opposite pressure and suction sides extending radially in span between a root and tip and axially in chord between leading and tr... | 05/20/2008 |
| 7344360 | Wind turbine rotor blade with in-plane sweep and devices using same, and methods for making same A wind turbine includes a rotor having a hub and at least one blade having a torsionally rigid root, an inboard section, and an outboard section. The inboard section has a forward sweep relative to an elastic axis of the blade and the outboard section has an aft swe... | 03/18/2008 |
| 7332838 | Motor-fan assembly and combustion-type power tool employing the same To connect a motor shaft to a fan, a connection rod is used that is symmetrical in shape with respect to a longitudinal axis of the connection rod. The connection rod includes a first part formed with a hole in coaxial with the longitudinal axis, and a second part f... | 02/19/2008 |
| 7280950 | Locomotive diesel engine turbocharger and turbine stage constructed with turbine blade vibration suppression methodology A method for fabrication of a locomotive diesel engine turbocharger turbine stage so as to avoid harmonic vibration in the turbine blades when the engine is operated at pre-selected throttle settings. Upon determining throttle settings for the engine and modeling of... | 10/09/2007 |
| 7273354 | High efficiency axial fan Disclosed is an axial fan (1) rotating in a plane (XY) about an axis (2) having a central hub (3) and a plurality of blades (4), which have a root (5) and a tip (6). The blades (4) are delimited by a concave leading e... | 09/25/2007 |
| 7252479 | Rotor blade for a high speed rotary-wing aircraft A main rotor blade exhibiting a unique planform shape in which the blade chord increases from the root end of the blade inboard region to the outer main region of the blade, where the blade chord achieves a maximum chord at a spanwise location within the main region... | 08/07/2007 |
| 7249931 | High efficiency air conditioner condenser fan with performance enhancements Twisted blades for outdoor air conditioner condensers and heat pumps that improve airflow efficiency to minimize operating power requirements. The blades can run at approximately 850 rpm to produce approximately 1930 cfm of air flow using approximately 110 Watts of ... | 07/31/2007 |
| 7223075 | Turbine wheel for driving rapidly rotating tools A turbine wheel for driving rapidly rotating tools, in the form of a circular disk or ring, configured for mounting so as to be rotatable about an axis. Disposed thereon in circular formation are turbine blades having axially parallel front and back faces curved in ... | 05/29/2007 |
| 7204676 | Fan blade curvature distribution for high core pressure ratio fan A method for reducing vortex promotion of a rotor blade used in high core PR fans comprises shifting a curvature distribution of a blade section immediately adjacent to the hub such that a major turning of the suction side of the section is located near a trailing e... | 04/17/2007 |
| 7179058 | Aerodynamically wide range applicable cylindrical blade profiles The present invention relates to the improved aerodynamic design of a pair of blade profiles valid over a wide range of flow regime. The so formed blades, pertain to high pressure, intermediate pressure and first few stages of low pressure cylinders of axial steam t... | 02/20/2007 |
| 7175393 | Transonic blade profiles The present invention relates to the aerodynamic design of moving blades, pertaining to later stages of axial steam turbines where the inlet flow is non-uniform over the blade height. The claim made herein is a set of six invented transonic blade profiles which can ... | 02/13/2007 |
| 7156609 | Method of making complex twisted blades with hollow airfoil cross section and the turbines based on such A reactive turbine, each blade of which approximates a helical shape that is constructed with readily available conventional manufacturing techniques. The blades are constructed in discrete straight sections that, when joined, approximate a helix or any other effici... | 01/02/2007 |
| 7131819 | High efficiency ceiling fan Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends. ... | 11/07/2006 |
| 7048494 | Turbine fuel pump A turbine fuel pump including a cylindrical casing, an electric motor accommodated in the casing, a pump housing mounted into the casing, and an impeller disposed within the pump housing and driven around an axis in a rotational direction by the electric motor. The ... | 05/23/2006 |
| 7044712 | Axial-flow fan This present invention relates to an axial-flow fan including a central hub connected with a driving shaft of a motor, and a plurality of blades extending radially along the circumference of the hub for blowing air toward an axial direction, the plurality of blades ... | 05/16/2006 |
| 7018167 | Fluid machinery An object is to improve the durability of wings and suppress vibration of the wings and generation of noise. A fluid machine includes a rotatably supported wing support, and a plurality of wings (21) formed on the wing support at a plurality of circumferentia... | 03/28/2006 |
| 7014423 | High efficiency air conditioner condenser fan Novel twisted blades with an air foil for use with air conditioner condensers and heat pumps that provide improved airflow efficiency to minimize operating power requirements having an overall diameter across the blades being approximately 19 inches, and approximate... | 03/21/2006 |
| 7004726 | Fan for cooling a computer A fan assembly includes a fan mounted within a housing that features an inward concave arrangement for an inner face of its housing to reduce the distance between the housing and a center shaft of the fan blades. In this way, fan vibration and noise can be reduced. | 02/28/2006 |
| 6997682 | Cool air circulation type axial flow fan for refrigerator Disclosed herein is a cool air circulation type axial flow fan for a refrigerator. The fan comprises a plurality of spaced blades mounted on the outer circumference of a hub for blowing cool air to a freezing chamber and a chilling chamber of the refrigerator. Sever... | 02/14/2006 |
| 6986642 | Extreme mu rotor A rotor for a rotary wing aircraft includes a blade having a leading edge, and a trailing edge. The rotor has a leading edge tip extension at a tip of the blade and a weight within the leading edge tip extension. The rotor also includes a trailing edge tip extension... | 01/17/2006 |
| 6974302 | Turbine fuel pump A turbine fuel pump includes an impeller having blades, each including a linear blade portion extending linearly in the radial direction of the impeller and a curved blade portion extending circularly curvedly from the head of the linear blade portion to the forward... | 12/13/2005 |
| 6948912 | Heat dissipation device and its impeller thereof A heat dissipation device and a blade structure thereof are employed to increase input air volume, A new impeller, mounted on the driving means, includes a hub and a plurality of rotor blades arranged around the hub. Preferably, the inner side of each rotor blades e... | 09/27/2005 |
| 6908287 | Axial flow fan Disclosed is an axial flow fan capable of achieving reduction of noise while having a high blowing efficiency compared to the power consumption of a motor adapted to drive the axial flow fan. The axial flow fan includes a hub, and a plurality of blades extending rad... | 06/21/2005 |
| 6899526 | Counterstagger compressor airfoil A compressor airfoil includes opposite pressure and suction sides joined together at leading and trailing edges and extending in span between a root and tip. The airfoil includes stagger increasing above the root and decreasing above a midspan pitch section thereof.... | 05/31/2005 |
| 6814545 | Fan blade The present invention employs improved fan blade shapes to improve fan blade performance in one or more manners (i.e., increased fan efficiency, lower fan noise, greater fluid moving capability, and the like). In some embodiments, the fan blade has a front side, a r... | 11/09/2004 |
| 6733241 | High efficiency ceiling fan Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends. ... | 05/11/2004 |
| 6719533 | High efficiency ceiling fan Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends. Air flow distribution is enhanced with at least a porti... | 04/13/2004 |
| 6719532 | High efficiency ceiling fan Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends. Air flow distribution is enhanced with at least a porti... | 04/13/2004 |
| 6712584 | Fan blade The present invention employs improved fan blade shapes to improve fan blade performance in one or more manners (i.e., increased fan efficiency, lower fan noise, greater fluid moving capability, and the like). In some embodiments, the fan blade has a front side, a r... | 03/30/2004 |
