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| Number | Title | Issue Date |
| 7780417 | Wind energy plant with a rotor hub A wind energy plant with a rotor hub which is connected to at least one pitch bearing, and with at least one rotor blade, the blade root of which is connectable to the pitch bearing via joining means, wherein a stiffening element is provided, which is arranged betwe... | 08/24/2010 |
| 7351037 | Y-connect fastener for ceiling fan blades A Y-connect fastener (210) is provided for firmly fastening ceiling fan blades (26) to mounting brackets (20). A plurality of protuberant members (32) extend upwardly from the mounting brackets (20), and have head portions (72 | 04/01/2008 |
| 7281899 | Quick assembly blades for ceiling fans Easy to attach and detach blades for overhead ceiling fans. A first version has a ceiling fan blade with keyhole slots that fit over flat topped fasteners on a mounting arm. Pulling the blade away from the arm locks the slots to the fasteners. A second version is si... | 10/16/2007 |
| 7223078 | Rotary plate fastener for ceiling fan blades A rotary plate fastener (24) is provided for firmly fastening ceiling fan blades (26) to mounting brackets (20). A plurality of protuberant members (32) extend upwardly from the mounting brackets (20), and have respective head port... | 05/29/2007 |
| 7214035 | Rotor for a turbomachine A rotor for a turbomachine. The rotor comprises a hub including a peripheral surface, a first side surface, and a second side surface. The hub defines a plurality of cavities, each one of the cavities extending inwardly from the peripheral surface. The hub also defi... | 05/08/2007 |
| 7192255 | Device for mounting blades on a propeller hub with preloading of the bearings This device for mounting a propeller blade in a hub, of the type in which a blade base is mounted in rotation in a hub housing by means of at least two bearings and where a preloading device permitting axially preloading the two bearings comprises a holding ring mou... | 03/20/2007 |
| 7156707 | Marine propulsion system A marine propulsion system comprising a push rod (50) for adjusting the pitch of propeller blades (34). The push rod (50) has a screw-threaded bolt (60) engaged with a nut (78). The nut (78) carries a bevel gear (84) ... | 01/02/2007 |
| 7114926 | Water pump for cooling engine A water pump for cooling an engine in which an impeller accommodated in a pump housing provided on an engine body is mounted on an end of a rotational shaft rotatably supported on the pump housing for enhancing the reliability of the mounting strength of the impelle... | 10/03/2006 |
| 7097430 | Injection moulding of plastic fans A method of manufacturing a fan from a plurality of fan blades (12), comprising the steps of: providing an injection moulding tool (30) which defines a fan hub section (14); assembling a predetermined number of preformed fan blades with the inje... | 08/29/2006 |
| 7086831 | Vane mounting A vane mounting arrangement 21, 31 is provided in which a vane 22, 32 is secured through a mounting end 23, 33 within an aperture 25, 35 formed in a mounting platform 24, 34. An expandable or expansive member 26, 36 is locat... | 08/08/2006 |
| 7066721 | Ceiling fan motors An inside-out ceiling fan motor has a stator mounted to a downrod with an annular array of stator coils positioned about a rotor axis of rotation. A rotor is rotatably mounted about the stator. The rotor has a plurality of vanes spaced along the rotor periphery and ... | 06/27/2006 |
| 7008689 | Pin reinforced, crack resistant fiber reinforced composite article A composite article, for example a blading member of a gas turbine engine, comprising a plurality of stacked layers of in-plane reinforcing fibers bonded together with a matrix resin is provided with enhanced resistance to impact cracking, material loss and/or delam... | 03/07/2006 |
| 6997681 | Adjustable air seal on a fan hub An axial flow fan has a hub with a plurality of hub struts extending radially from the hub for mounting a blade on the end of each hub strut. Inner and outer studs extend in the axial direction of the fan on each of the hub struts. An air seal covers the hub struts,... | 02/14/2006 |
| 6997601 | Agitator with removable blades for sanitary tank A sanitary tank is provided with a clean-in-place agitator assembly in which the impeller portion is removably installed at the tip or the shaft or along the shaft. A shaft housing that penetrates the wall of the tank employs lip seals around the drive shaft so that... | 02/14/2006 |
| 6942461 | Rotor blade hub The present invention concerns a rotor blade hub for a wind power installation. Such a hub represents a mechanical connection between the (horizontal) rotor shaft (rotor spindle) and the rotor blades. This means that all forces which occur at the rotor blades, insof... | 09/13/2005 |
| 6932576 | Quick connect ceiling fan blade A ceiling fan (10) is disclosed having a motor housing (11) with an electric motor to which is mounted an annular array of blade irons (14) each having a blade (15) mounted thereto. Each blade has two, catch mounting holes (17) and... | 08/23/2005 |
| 6902375 | Quick connect ceiling fan blade A ceiling fan (10) is disclosed having a motor housing (11) with an electric motor (13) to which is mounted an annular array of blade irons (14) each having a blade (15) and a locking plate (17) mounted thereto. Each blade i... | 06/07/2005 |
| 6902374 | Ceiling fan A ceiling fan comprising an annular array of blade irons (14) adapted to be rotatably driven by a motor, said blade irons having opposite sides (15) formed with at least one notch (18), a plurality of fan blades (25) with each blade beari... | 06/07/2005 |
| 6857854 | Quick connect blade system A ceiling fan quick connect blade system (10) is disclosed which is coupled to a conventional ceiling fan electric motor (11) having a lower portion (12). The motor lower portion has an annular array of threaded mounting holes (13) therei... | 02/22/2005 |
| 6821091 | Securing device A securing device for securing a connecting arm to a ceiling fan blade. The blade includes a hole through which a male member of the arm is inserted. The securing device includes a plate having an aperture through which the engagement end subsequently extends with t... | 11/23/2004 |
| 6802694 | Quick assembly blades for ceiling fans Easy to attach and detach blades for overhead ceiling fans. A first version has a ceiling fan blade with keyhole slots that fit over flat topped fasteners on a mounting arm. Pulling the blade away from the arm locks the slots to the fasteners. A second version is si... | 10/12/2004 |
| 6726453 | Quick-release fan blade mounting structure for ceiling fan A fan blade mounting structure is constructed to include a first coupling unit fixedly located on the rotor of a fan motor assembly, the first coupling unit having a spring-supported hook and a control rod adapted to move the hook between the locking position and th... | 04/27/2004 |
| 6692231 | Molded fan having repositionable blades The present invention provides a fan having a molded, substantially non-metallic hub and a plurality of fan blades attached thereto. The fan blades can be rotationally indexable relative to the hub, so that a pitch angle may be adjusted. Further, the fan ... | 02/17/2004 |
| 6537031 | Marine propeller with detachable blades A marine propeller comprises a hollow hub body (11), a plurality of propeller blades (16) and a plurality of fastening devices (19, 21) for each propeller blade (16). Each fastening device includes a tension rod (19) and a flange member (22) mounted on th... | 03/25/2003 |
| 6457853 | Impeller device and method An impeller for use in a mixing apparatus having a rotating shaft has at least one longitudinal member extending substantially radially from the shaft; and a plurality of individual impeller segments each having a bore therethrough. The segments are stack... | 10/01/2002 |
| 6378322 | High-performance molded fan In one embodiment, the present invention provides a high performance molded, substantially non-metallic fan capable of producing at least about 20 cubic feet per minute ("CFM") per input watt at a static pressure of about 0.00 inches of water. In one embo... | 04/30/2002 |
| 6352410 | Variable-pitch boat propeller with easy-change vanes A variable-pitch boat propeller has a hub centered on and rotatable about a hub axis and formed with a radially out-wardly open pocket having a predetermined inside diameter and centered on a vane axis extending generally radially of the hub axis and a mo... | 03/05/2002 |
| 6352409 | Ceiling fan assembly and method for assembling same A fan blade assembly and method according to which a mounting arm is provided and at least one clamping member extends from the arm. A blade has a portion engaging the arm, and a through opening for receiving the clamping member. The clamping member is mo... | 03/05/2002 |
| 6318964 | Complex cooling fan with increased cooling capacity A complex cooling fan includes an upper fan including an upper fan and a lower fan, the upper fan including a first cylindrical body, a plurality of first blades extending outwardly from the cylindrical shell body, and a cylindrical collar extending downw... | 11/20/2001 |
| 6312223 | Marine propeller A marine propeller includes a hub defining an axial direction of the propeller, a plurality of adjustable propeller blades disposed around the hub, and a blade setting adjusting arrangement. Each blade includes a blade-part and a root-part, the root-part ... | 11/06/2001 |
| 6309183 | Blade arm Easy to attach and detach blades for overhead ceiling fans. One version has a fan blade with keyhole slots that fit over flat topped fasteners on a mounting arm. Pulling the blade away from the arm locks the slots to the fasteners. A similar second versio... | 10/30/2001 |
| 6250884 | Ceiling fan A ceiling fan includes a motor having a stator and an annular rotor surrounding concentrically and radially spaced apart from the stator. An upper cover includes an upper major wall mounted on an upper end portion of the stator, and an annular skirt porti... | 06/26/2001 |
| 6220820 | Bearing preload A bearing arrangement, for example, for a variable pitch propeller, has a fluid operated actuator (42, 34, 40) for causing relative movement between bearing surfaces of races (12, 32) so as to preload bearings (30) held there between. Mechanical locking m... | 04/24/2001 |
| 6171059 | Quick assembly blades for ceiling fans Easy to attach and detach blades for overhead ceiling fans. A first version has a ceiling fan blade with keyhole slots that fit over flat topped fasteners on a mounting arm. Pulling the blade away from the arm locks the slots to the fasteners. A second ve... | 01/09/2001 |
| 6155786 | Ceiling fan assembly and method for assembling same A fan assembly and a method of assembling same according to which a mounting flange is provided on an arm to which a blade is connected and a slot is provided in a mounting ring. The flange extends in the slot, and a retainer engages the arm member. The r... | 12/05/2000 |
| 6142735 | Variable-pitch propeller, especially for sport craft A variable-pitch propeller, especially for a sport board, has angularly displaceable blade support plates which can be rotated about respective radial axes. The plates are provided with radially inwardly directed claws which engage in circumferential groo... | 11/07/2000 |
| 6113352 | Hingeless rotor with precompressed half-bearings supporting blade root oversleeves on torsionable blade root strips Each blade of the rotor has a rigid root oversleeve connected to a torsionable and flexible root strip by two laminated, spherical support half bearings, fixed by their outer frame with double rigid horns the lateral ends of which facing each other on eac... | 09/05/2000 |
| 6109877 | Turbine blade-to-disk retention device The invention provides a turbine blade retention device installed in an axially extending gap between the blade root bottom and the slot floor. The retention device has two parts: a blade root retention clip and a spacer bar. The clip has an elongated web... | 08/29/2000 |
| 6095753 | Structure for mounting blades of a ceiling fan An improvement in the structure for mounting blades of a ceiling fan, characterized in that a motor comprises a bottom formed with a plurality of brackets each having a recess, the recess having an inner end which gradually decreases in size toward an out... | 08/01/2000 |
| 6059531 | Impeller and fan blade attachment assembly In a fan including a hub mounted for rotation and a plurality of fan blades, an attachment assembly for detachably engaging at least one of the plurality of fan blades with the hub, the attachment assembly comprising a stop carried adjacent an end of a se... | 05/09/2000 |
