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Class 416/236R - Ribbed or grooved


Subclass of Class 416 - Fluid reaction surfaces (i.e., impellers)
Definition: Apparatus wherein the blade surface has rib means thereon
No. of patents: 112
Last issue date: 02/21/2012


1      
NumberTitleIssue Date
8118560Blade
A blade surrounded by: a leading edge portion, which is where fluid flows in; a pressure surface which is a concave curve shape concaved along a direction the fluid flows; a suction surface which is a convex curve shape convexed along a direction the fluid flows; an...
02/21/2012
8100664Impeller for a cooling fan
An impeller (10) for a cooling fan includes a hub (20) having a circular wall (22) and an annular sidewall (24) extending upwardly from a periphery of the circular wall, and a plurality of blades (30) extending radially from the si...
01/24/2012
8029242Multi-blade fan
In a multi-blade fan provided with a plurality of notches in a blade edge in an outer side of each impeller blade, it is possible to direct an impeller blade outlet in a portion of the notches to a circumferential direction. Also, it is possible to direct an air flo...
10/04/2011
7891951Fan with improved heat dissipation
A fan includes a rotatable center member that is centered relative to an axis of rotation of the fan. The fan includes a number of blades radially extending from the rotatable center member. Each blade may have one or more ribs extending therefrom non-parallel to th...
02/22/2011
7883323Fan with improved heat dissipation
A fan includes a rotatable center member that is centered relative to an axis of rotation of the fan. The fan includes a number of blades radially extending from the rotatable center member. Each blade may have one or more ribs extending therefrom non-parallel to th...
02/08/2011
7866952Fan with improved heat dissipation
A fan includes a rotatable center member that is centered relative to an axis of rotation of the fan. The fan includes a number of blades radially extending from the rotatable center member. Each blade may have one or more ribs extending therefrom non-parallel to th...
01/11/2011
7857597Boundary layer fins for wind turbine blade
A wind turbine blade includes a plurality of boundary layer fins, aligned substantially parallel to a direction of flow over the blade, for reducing boundary layer separation from the blade. ...
12/28/2010
7819631Fan with improved heat dissipation
A fan includes a rotatable center member that is centered relative to an axis of rotation of the fan. The fan includes a number of blades radially extending from the rotatable center member. Each blade may have one or more ribs extending therefrom non-parallel to th...
10/26/2010
7713030Fan with improved heat dissipation
A fan includes a rotatable center member that is centered relative to an axis of rotation of the fan. The fan includes a number of blades radially extending from the rotatable center member. Each blade may have one or more ribs extending therefrom non-parallel to th...
05/11/2010
7585157Rotor blade for a wind power station
A rotor blade for a wind power station includes a profiled member that is provided with a relative thickness which decreases towards the outside from a root to a tip of the blade. The profiled member has a leading edge and a trailing edge as well as a suction side a...
09/08/2009
7494325Fan blade with ridges
A blade including a body having a leading edge, a trailing edge, a surface point of maximum camber, and a low pressure surface extending between the leading edge and the trailing edge. The body further includes a high pressure surface extending between the leading e...
02/24/2009
7435058Ceramic matrix composite vane with chordwise stiffener
A means (22) for structurally stiffening or reinforcing a ceramic matrix composite (CMC) gas turbine component, such as an airfoil-shaped component, is provided. This structural stiffening or reinforcing of the airfoil allows for reducing bending stress that ...
10/14/2008
7435048Drain pump, and air conditioner provided therewith
A drain pump is provided that reduces the operating noise when the head is low. The drain pump has a pump casing, and an impeller. The pump casing has a drain inlet for sucking in drain water at a lower end part and a drain outlet for discharging drain water at a si...
10/14/2008
7416386Heat dissipation apparatus
A heat dissipation apparatus. A fan frame includes an air inlet, an air outlet, a passage, and a curved expansion portion. The air inlet is opposite the air outlet. The passage is between the air inlet and the air outlet, guiding airflow from the air inlet to the ai...
08/26/2008
7393181Expandable impeller pump
An impeller according to an example of the present invention comprises a hub, and at least one blade supported by the hub. The impeller has a deployed configuration in which the blade extends away from the hub, and a stored configuration in which the impeller is rad...
07/01/2008
7381027Fan motor
A fan motor having a small thickness and its impeller's blades formed to have a longer length in the diametrical direction than a width in the axial direction. Since the blade of the fan motor has a tooth structure or chamfers at its edge end in the diametrical dire...
06/03/2008
7351041Fan with reduced noise generation
Axial flow fan propellers are provided with a roughened portion along the trailing edge of the fan blades on the pressure side of the blade to minimize tonal acoustic emissions generated by laminar boundary layer vortex shedding. The roughened portion may be provide...
04/01/2008
7334333Method for making a hollow fan blade with machined internal cavities
Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves. Each detail half has a plurality of cavities and ribs machined out to reduce weight. The floor and opposite interior walls of each cavity are machined simultaneously. The c...
02/26/2008
7318699Moisture removal grooves on steam turbine buckets and covers and methods of manufacture
Covers on bucket tips are provided with an access slot along a circumferentially facing edge of the cover at a location where moisture removal grooves of the bucket will intersect with the cover. Machine tooling is then applied to form the grooves along the suction ...
01/15/2008
7287954Omni directional baffled wind energy power converter apparatus and method
A wind turbine apparatus, comprising an upright shaft defining an upright axis, at least two blades operatively connected to the shaft to rotate about the shaft axis as the blades are wind driven about the axis, the lowermost portion of each blade being offset, azim...
10/30/2007
7278825Method and system for regulating fluid over an airfoil or a hydrofoil
The present invention features a fluid flow regulator that functions to influence fluid flow across an airfoil or hydrofoil, as well as various rotating or rotary devices, including propellers, impellers, turbines, rotors, fans, and other similar devices, as well as...
10/09/2007
7270519Methods and apparatus for reducing flow across compressor airfoil tips
An airfoil for a gas turbine engine includes a leading edge, a trailing edge, a tip, a first side wall that extends in radial span between an airfoil root and the tip, wherein the first side wall defines a first side of said airfoil, and a second side wall connected...
09/18/2007
7207772Compressor for an aircraft engine
On a compressor with compressor blades, a flow transition fixation mechanism (4) is provided on the suction side (2), approximately parallel to the leading edge (3) and upstream of the compression shocks acting upon the blade, which prevents the...
04/24/2007
7182570Centrifugal pump
Centrifugal pump, in particular drain pump for washing machines, comprising a casing (10) that defines a chamber (11) within which an impeller formed by a hub (14) and a disk (15) provided with blades (16) is capable of rotating.
02/27/2007
7182582Centrifugal pump with reverse rotation protection integrated on the impeller blade
In a centrifugal pump (10) for liquids comprising an impeller casing (50) inside which a centrifugal impeller (40) is rotatably mounted including a hub (42) from which a plurality of curved blades (44) delimited by two curved edges...
02/27/2007
7165942Fan impeller with integrated grease separation, especially for cooking appliance
The disclosure relates to a fan impeller including a base plate and a plurality of fan impeller blades fixed to the plate. The fan impeller blades are positioned in an essentially vertical manner on the base plate and have a substantially radial arrangement, each fa...
01/23/2007
7147437Mixed tuned hybrid blade related method
A steam turbine blade includes a shank portion and an airfoil portion. The airfoil portion is formed with at least one pocket filled with a polymer filler material chosen as a function of natural frequency impact on the turbine blade or as a function of the damping ...
12/12/2006
7144223Supercavitating propeller with adjustable cup, and the method to adjust said cup
The invention describes a supercavitating propeller with adjustable cup, and a method to adjust the cup. The trailing edge of the propeller blade is characterised by a protuberance with a limited section compared to the blade's section at the conventional trailing e...
12/05/2006
7118342Fluted tip turbine blade
A turbine blade includes an airfoil having pressure and suction sidewalls extending between leading and trailing edges and root and tip. The tip includes squealer ribs extending from a tip floor forming an open tip cavity. The rib along the pressure sidewall has a s...
10/10/2006
7112043Compressor impeller thickness profile with localized thick spot
An air foil includes a leading edge, a trailing edge, a hub contour, and a tip contour, whereby the hub contour and tip contour extend between the leading and trailing edges to define a blade surface therebetween. A localized thick spot is disposed between the leadi...
09/26/2006
7104067Combustor liner with inverted turbulators
A combustor liner for a gas turbine, the combustor liner having a substantially cylindrical shape; and a plurality of axially spaced circumferential grooves formed in an outside surface of the combustor liner. ...
09/12/2006
7059833Method for improvement of the efficiency of a wind turbine rotor
A method for the improvement of wind turbine rotor efficiency blades of a wind turbine rotor with serrated trailing edges each having a plurality of span-wise, periodic indentations, in the form of saw teeth having approximately 60 degrees included angles between ad...
06/13/2006
7048505Method and system for regulating fluid flow over an airfoil or a hydrofoil
The present invention features a fluid flow regulator that functions to significantly influence fluid flow across an airfoil or hydrofoil, as well as various rotating or rotary devices, including propellers, impellers, turbines, rotors, fans, and other similar devic...
05/23/2006
7040845Screw compressor and method of manufacturing rotors thereof
A screw compressor comprises a casing, and a male and a female rotor formed with axially twisted screw grooves and accommodated in the casing, the both rotors being rotated by timing gears fixed to the respective rotors while a desired minute gap is kept therebetwee...
05/09/2006
7028677External drive supercharger
An external drive supercharger is described. The external drive supercharger includes an impeller, a multibelt pulley adapted to a drive source, an impeller pulley drivingly coupled to the impeller, and an external drive belt having at least one rib coupled to the m...
04/18/2006
6976826Turbine blade dimple
A blade for mounting in an annular array about a rotary hub, the blade having: a blade root; an airfoil profile with a concave pressure side surface; a chord line extending between a leading edge and a trailing edge; and a blade tip, where the blade has a recess in ...
12/20/2005
6939108Cooling fan with reinforced blade
A circulatory device comprising a large diameter fan having reinforced fan blades with a tapered airfoil shape is disclosed. The fan blades may be formed using an extrusion method of fabrication, wherein each fan blade may comprise a reinforced trailing edge with a ...
09/06/2005
6923624Wooden fan blade
A wooden fan blade includes an elongated blade body and a rib strip fitted into the elongated blade body. The blade body is made of a wooden plate having wooden fibers extended substantially in parallel to a longitudinal axis of the blade body. The blade body has an...
08/02/2005
6905310Impeller for centrifugal compressors
In an impeller for centrifugal compressors comprising a plurality of blades each having a base end attached to a central hub, each of the blades is given with a thickness which increases progressively toward a hub end thereof, and a suction surface side of the blade...
06/14/2005
6905309Methods and apparatus for reducing vibrations induced to compressor airfoils
A method enables a rotor blade for a gas turbine engine to be fabricated. The method comprises forming an airfoil including a first side wall and a second side wall that each extend in radial span between an airfoil root and an airfoil tip, and wherein the first and...
06/14/2005
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