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| Number | Title | Issue Date |
| 8157524 | Axial flow fan with hub isolation slots An axial flow fan includes a hub rotatable about a central axis. The hub includes a front face and a cylindrical portion. The axial flow fan also includes a plurality of blades extending radially outwardly from the cylindrical portion of the hub, and an aperture thr... | 04/17/2012 |
| 7785069 | Ventilation unit The ventilation unit has an electric motor, the output shaft of which is fitted with a fan having a cup-shaped central body and a number of blades. The central body is defined by a base wall, and by an annular wall from whose outer face the blades extend. And the ma... | 08/31/2010 |
| 7455502 | Axial fan Described is an axial fan in which an impeller (1) comprises a hub (2), motor-powered so that it rotates about its own central axis (3) and a plurality of blades (5) extending from the hub (2) in directions transversal to the hub (... | 11/25/2008 |
| 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 |
| 7282823 | Self-cooling electric machine An electric machine having a rotor with a ventilation port and a rotor coupling with at least one air disturber. ... | 10/16/2007 |
| 7275325 | Bush cutting machine A bush cutting machine with a tubular operating pole connected to an outlet of an exhaust muffler and doubling as an exhaust passage is provided. Exhaust gases discharged from an engine flow from the exhaust muffler through the operating pole and are then discharged... | 10/02/2007 |
| 7097522 | Water pickup configuration for a marine propulsion system A cooling system for a marine propulsion device provides a water flow directing device, which is generally annular in shape, which has a water inlet extending from it. The water flow directing device is attachable to a gear case of a marine propulsion device and is ... | 08/29/2006 |
| 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 |
| 7004725 | Device for centering a tube in a turbine shaft A device for centering a component positioned inside and rotationally secured at its end to a turbine hollow shaft positioned in a gas turbine engine. The device includes a sheath enclosing and solidly joined to the component, and an elastic ring interposed between ... | 02/28/2006 |
| 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 |
| 6578405 | Gas seep detection A method of detecting a marine gas seep that includes: deploying a local probe on or near the seafloor; producing bubbles in water near or within the local probe; detecting the bubbles; producing data indicating the relative concentration of dissolved gas... | 06/17/2003 |
| 6572334 | Rotor of a directly gas-cooled electrical turbomachine The cap plate has an axially recessed region with a shoulder. The gas guiding ring half shells have a respective projecting rib. A retaining ring consisting of two retaining ring halves abuts with its first leg in the shoulder and is connected by means of... | 06/03/2003 |
| 6379116 | Impeller and structure for an impeller housing An impeller comprising a plurality of fan blades attached to a housing mounted for rotation and an electric motor contained in a chamber bound by the housing for rotating the housing, and a vent architecture of the housing comprising discrete groups of ve... | 04/30/2002 |
| 6161994 | Device for cleaning the working area of chip removal machines A propeller with pivoting blades is provided as a cleaning tool (1) for the work area of metal cutting machines, where the angle of adjustment for the pivoting blades is such that an air jet is generated supporting the propeller blades (15) in folding ope... | 12/19/2000 |
| 6102660 | Miniature fan for air freshener A miniature fan for air freshener includes a freely rotatable fan seat, a bearing mounted at the center of the fan seat, a holder at the bottom of the fan seat, a container within the fan seat, a top cap mounted on the top of the container, a fastening nu... | 08/15/2000 |
| 6053700 | Ducted turbine A turbine 400 has a central duct 410 which accelerates fluid passing through it and a blade configuration which retards the flow of fluid near the tips of the turbine. This structure results in a vortex having a higher fluid pressure behind the tips of th... | 04/25/2000 |
| 6022189 | Ceiling fan having a rotatable inner housing A ceiling fan includes an outer housing and a cap secured on top of the outer housing. A motor is disposed in the outer housing for driving a number of fan blades. An inner housing is rotatably disposed in the outer housing and is coupled to the motor by ... | 02/08/2000 |
| 5975847 | Ceiling fan housing A ceiling fan housing includes a cylindrical member having a bottom portion and having a cover engaged on the upper portion. A frame includes a number of panels each having an upper ear extended radially inward for engaging with the cover and each having ... | 11/02/1999 |
| 5975848 | Ceiling fan having rotary inner housing A ceiling fan includes an outer housing and a cap secured on top of the outer housing. A shaft is secured to the cap and a motor is disposed in the outer housing and secured to the shaft for driving a number of fan blades. An inner housing is rotatably di... | 11/02/1999 |
| 5947685 | Ceiling fan housing combination A ceiling fan housing includes a cylindrical member having a number of openings and includes a bottom portion having a number of punctures. A number of panels are secured to the cylindrical member and the bottom portion and engaged in the openings 8 the c... | 09/07/1999 |
| 5681147 | Ceiling fan motor housing assembly A ceiling fan motor housing assembly including a cup-like motor holder frame having an open top, a top cover shell covered on the cup-like motor holder frame over its open top, the top cover having a downward flange around the border fitted into the cup-l... | 10/28/1997 |
| 5573372 | Emergency enablement device for a boat propeller Disclosed is an apparatus for emergency enablement of a boat propeller. The apparatus includes a central mounting plate having an aperture for engagement with one end of the propeller shaft to which the propeller is attached. A drive plate is affixed to t... | 11/12/1996 |
| 5503524 | Housing for ceiling fan A housing for a ceiling fan includes a cylindrical member having a number of recesses formed on the outer peripheral surface for printing patterns. A cap is engaged on the cylindrical member and has a number of depressions formed in the upper surface for ... | 04/02/1996 |
| 5466126 | Bearing for the impeller of a fluid meter An impeller for a fluid meter, the impeller comprising a bearing including a central recess suitable for receiving a pivot, and including at the periphery of the central recess, open-ended fluting with adjacent flutes being separated by ribs. Axial passag... | 11/14/1995 |
| 5464321 | Marine propeller A marine propeller using the circulation control principle of blowing tantially over a Coanda surface at the trailing edge of each blade to develop high blade lift (thrust). Each blade has internal chambers and two blowing slots so that blowing is contro... | 11/07/1995 |
| 5441387 | Housing combination for ceiling fan A housing for act ceiling fan includes a cylindrical member and a bottom plate each having a number of openings for engaging with a number of frames. The frames each includes an inner peripheral channel for engaging with a number of panels. The panels can... | 08/15/1995 |
| 5439350 | Housing for ceiling fan A housing for a ceiling fan includes a cylindrical member and a bottom plate. A cap is engaged on the cylindrical member. A frame includes a ring element and a number of extensions radially extended outward from the ring element for engaging with the bott... | 08/08/1995 |
| 4931026 | Jet propeller A jet propulsion engine submergible in water for driving a water craft wherein a drive shaft is connected to an internal combustion engine for rotation thereof. A first turbine is mounted on the drive shaft for rotation therewith for providing a first hig... | 06/05/1990 |
| 4892269 | Spinner ducted exhaust for pusher turboprop engines A pusher turboprop engine is provided with an interior exhaust duct structure which directs the hot turbine gasses through and out of the engine nacelle to an annular duct mounted on the rear spinner which surrounds the propeller hub. The rotating annular... | 01/09/1990 |
| 4883408 | Motor fan retention on a non-stepped shaft A dynamoelectric machine has a housing and a rotor assembly including a rotatable non-stepped shaft which projects through an opening in an end wall of the housing. A fan moves air through the machine to ventilate it and keep it cool. The fan is secured t... | 11/28/1989 |
| 4863346 | Outer casing assembly for ceiling-fan motors An outer casing assembly for ceiling-fan motors includes an upper cover with a top surface and a downward-curving flange, having a central opening in the top surface and a plurality of bolt holes in the periphery of the downward-curving flange; a middle g... | 09/05/1989 |
| 4853574 | Armature rotors of electromagnetic retarders The invention provides an armature rotor for electromagnetic retarder, comprising at least one disc (2) extended axially on one of its faces by a plurality of fins (9), each fin being defined by two parallel or substantially parallel faces slanted with re... | 08/01/1989 |
| 4838760 | Fan with motor cooling enhancement A fan (10) adapted to be driven by an electrical motor (12), the motor of the type having openings (14) to permit the flow of air therethrough to cool internal components of the motor. The fan comprising a cup-shaped hub (20) adapted to be driven by the m... | 06/13/1989 |
| 4720640 | Fluid powered electrical generator A fluid powered electrical generator having an impellor-rotor rotatively mounted on a central support structure. A toroidal outer support structure surrounds the impellor-rotor, with the impellor-rotor including a plurality of circumferentially spaced-apa... | 01/19/1988 |
| 4689507 | Ventilation structure for an electric motor An improved electric motor ventilation structure including a "pull through" fan associated with a motor endshield including a shaft for supporting a fan on one end thereof, and defining a preselectively spaced and contoured air inlet and air circulating c... | 08/25/1987 |
| 4668161 | Ventilation of turbine components Ventilation apparatus for creating a fluid flow through the interhub spacing between the hubs of adjacent turbine wheels which are not integral with the rotor of the turbine includes an outward radial extension of the hub of the downstream wheel and/or a ... | 05/26/1987 |
| 4663549 | Fan motor with a fan frame formed in part by a portion of a motor base A fan motor having a fan frame, a portion of which is formed by the extension of a motor base member on which a rotor axis bearing, a stator, a cup-shaped housing and another fan frame portion are mounted and a fan fixed on the rotor axis and incorporated... | 05/05/1987 |
| 4626720 | Cooling apparatus for motor means to protect commutator from dust and moisture in cooling air Cooling air is introduced through an opening in a wall portion of the motor housing radially opposing the commutator. A deflecting surface is provided for deflecting the cooling air entering the motor through the opening away from the commutator and towar... | 12/02/1986 |
| 4610600 | Adjustable-pitch axial fan wheel An adjustable-pitch axial fan wheel. A hub has an outer surface forming a portion of a sphere. A plurality of blades are attached to the hub, each blade having a substantial flange at the base portion, the inner surface of the flange being spherical to ma... | 09/09/1986 |
| 4583911 | Multiple fluid pathway energy converter An axial flow energy converter combining a tubular shroud defining a fluid pathway coaxial with the shroud, a rotational energy converter having a rotatable shaft mounted within the fluid pathway coaxial with the shroud, an impeller mounted to the shaft w... | 04/22/1986 |
