Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 8007234 | Axial fan unit having coaxially arranged axial fans First and second axial fans are coaxially connected to each other. Each axial fan includes an impeller rotatable about a center axis; a motor rotating the impeller about the center axis, a housing member surrounding the impeller and having a hollow body and approxim... | 08/30/2011 |
| 7815418 | Shroud and rotary vane wheel of propeller fan and propeller fan A shroud includes a body portion 5B, a mount 7 positioned at a center of the body portion 5B and supporting rotary vane wheel driver 6, and multiple support beams 10 radially extending from the mount 7 and joining the mount ... | 10/19/2010 |
| 7416386 | Heat 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 |
| 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 |
| 7331759 | Drying fan A drying fan, including for water damage restoration, including for drying a room corner extending axially along an interface between a wall and a floor, has a shrouded housing having an axial flow path therethrough, an intake cowling receiving intake air, and an ex... | 02/19/2008 |
| 7295418 | Collimated ionizer and method An air ion collimator is added to ionizers with integrated fans that are used to remove static charge. Three mechanisms minimize air ion losses through recombination. Hence, the collimator increases the air ions that are available for charge removal. First, reducing... | 11/13/2007 |
| 7284948 | Turbine with tube arrangement and method of preventing detachment of a fluid flow Turbine system including a turbine and a tubular arrangement having an exit opening. The tubular arrangement is arranged on a downstream side of the turbine. At least one flow controlling device at least partially prevents a fluid flow through the tubular arrangemen... | 10/23/2007 |
| 7214029 | Laminar air turbine The windmill assembly is a low drag, streamlined body of revolution that captures the kinetic energy content of the accelerated laminar air surrounding the body. The assembly includes a power-generating, wind-driven turbine that is compact, lightweight and capable o... | 05/08/2007 |
| 7190578 | Plasma display apparatus A plasma display apparatus comprising a chassis base, a plasma display panel coupled to a first side of the chassis base, and a driving board, for driving the plasma display panel, attached on a second side of the chassis base opposite to the first side of the chass... | 03/13/2007 |
| 7110255 | Heat-dissipating device and a housing thereof A heat-dissipating device and a housing thereof. The housing includes a passage for guiding an air stream flowing from an opening to another opening, wherein an inner wall of the passage at at least one of the opening sides extends radially outwards with a rotationa... | 09/19/2006 |
| 7077624 | Vehicle cooling fan shroud with an articulatable portion A vehicle cooling fan shroud includes a barrel portion which surrounds a cooling fan and is integrated with a substantially rectilinear shroud portion which surrounds a radiator. The barrel portion includes a first portion and a second portion pivotally attached to ... | 07/18/2006 |
| 7063504 | Cooling fan A cooling fan with high heat-dissipating performance includes a plurality of blades; and a frame for receiving the blades therein, wherein the frame has a reduced height for exposing the blades to outside of the frame so as to allow air to enter into the frame via a... | 06/20/2006 |
| 7021895 | Fan module with integrated diffuser Disclosed is a fan module. In one embodiment, the fan module includes a fan having an inlet end and an exit end, and a fan housing in which the fan is positioned, the fan housing including at least one angled interior wall adjacent the exit end of the fan that diffu... | 04/04/2006 |
| 7008180 | Axial-flow fan and projector provided with the same An axial-flow fan has a plurality of main fins (702), and auxiliary fins (703) provided between the main fins (702), where the position of a front end of the auxiliary fin (703) relative to X axis and the position of a front end of the ma... | 03/07/2006 |
| 6863496 | Fan and shroud assembly A fan and shroud assembly includes a fan having a hub rotating around one shaft and a plurality of blades extending outwardly from the hub, a shroud encompassing the fan to adjust airflow by rotation of the fan, a guide ring portion located at a position where a pre... | 03/08/2005 |
| 6676371 | Double barrel vehicle cooling fan shroud A fan shroud includes a barrel portion which surrounds a cooling fan. The barrel portion includes a first cylindrical portion located within a second cylindrical portion about a cooling fan axis of rotation. A multiple of webs are located between the firs... | 01/13/2004 |
| 6602051 | Blowing apparatus A blowing apparatus with improved energy efficiency, comprising: a circular wall formed at a distance from a blade end of a fan; a first region where an inner diameter is enlarged so that a clearance with the blade end becomes substantially wide, and a se... | 08/05/2003 |
| 6595744 | Automotive fan assembly with flared shroud and fan with conforming blade tips High efficiency and low noise is achieved in an automotive engine-cooling fan assembly by flaring the inlet to the shroud barrel, and shaping the tips of the fan blades to conform to the shape of the inlet. Separation of the flow entering the fan is reduc... | 07/22/2003 |
| 6572333 | Air blower It is an object of the present invention to improve energy efficiency of an air blower. An annular wall is formed to extend from a suction-side end of a housing body toward a discharge side of a blade tip of a fan so as to provide an air pocket between th... | 06/03/2003 |
| 6481233 | 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... | 11/19/2002 |
| 6338609 | Convex compressor casing A compressor casing includes an axially convex inner surface for surrounding a row of rotor blades with radial gaps therebetween. The tip of the blades complement the casing contour for reducing blade tip losses and flow blockage.... | 01/15/2002 |
| 6312221 | End wall flow path of a compressor The end wall of the compressor adjacent the stator vanes and compressor blades is configured so that the annular region between the vanes and blades is held at a constant area and that the flow path convergence of the stator is increased to compensate for... | 11/06/2001 |
| 6290457 | Vacuum pump A vacuum pump has a rotor body having multiple stages of rotor blades each comprising a plurality of open-ended blades. The uppermost rotor blade formed on the rotor body is located in a position corresponding to a conical portion in a casing. The tip end... | 09/18/2001 |
| 6254343 | Low-noise cooling fan for electronic components and method of making the same An improved cooling fan (12) fan for cooling an electronic component includes a rotor (26) rotatably mounted in a housing (18) and having a plurality of fan blades (28). The housing (18) includes a first end (20), a second end (24), and a passage (24) int... | 07/03/2001 |
| 6065929 | Inducer equipment for a pump having large induction capacity Inducer equipment adapted to a pump having large induction capacity which cludes a case surrounding an inducer rotor having a plurality of blades leaving clearance relative to the case. The clearance between the peripheral portions of the blades and the c... | 05/23/2000 |
| 5803709 | Axial flow fan An axial flow fan primarily for use in harsh and/or corrosive environments such as agricultural barns has a one-piece plastic moulded housing which defines an air flow passageway, and a direct drive fan assembly supported in the air flow passageway by a n... | 09/08/1998 |
| 5727381 | Duct flow control system A duct fixed to a vehicle propelled through an ambient fluid medium is innally provided with spaced channel passages from which the fluid medium is ejected under pressure tangentially of local duct surfaces through Coanda affected slots at the trailing e... | 03/17/1998 |
| 5266009 | Impeller structure for water jet propelled boat A water jet propelled boat is equipped with a water intake opening, a water jet outlet, and with a mixed flow type impeller, where the above mentioned water intake opening and the above mentioned water jet outlet are connected by a water passage with the ... | 11/30/1993 |
| 5222863 | Turbine multisection hydrojet drive A hydrojet turbine drive 10 is described with a first turbine assembly 40 including a first compressor rotor 46 with blades 48 having a water pitch for drawing water into the turbine drive 10. The water is driven against the walls of a housing 18 and into... | 06/29/1993 |
| 5197854 | Axial flow fan An axial flow fan operates with increased efficiency, reduced noise, and improved resistance to stall. These benefits are achieved by providing a fan shroud with a bellmouth and a hub with a curved bellmouth wherein both have a substantially parabolic sha... | 03/30/1993 |
| 4936803 | Propeller assembly A boat or ship's propeller system utilizes a rotary propeller comprised of a plurality of short blade elements arranged annularly and supported from a central propeller shaft by spokes, there being an annular "funnel" with the large end forward which scoo... | 06/26/1990 |
| 4895489 | Axial flow fan An axial flow fan has a casing having an air flow passage therein which terminates at one end in an air inlet port and at the other end in an air outlet port. A hub carrying fan blades is rotatably disposed within the casing and rotationally driven by a m... | 01/23/1990 |
| 4734015 | Axial-flow fan An axial-flow fan, particularly a small fan which is axially compact, with a scroll plate surrounding the impeller and whose inner contour has a cylindrical configuration in the vicinity of the axial median plane and extends both towards the inlet side an... | 03/29/1988 |
| 4720359 | Wrapped fan cylinder for water cooling tower An initially flat sheet of a fan cylinder assembly is formed to an exact cylindrical configuration in such a manner that less than 20% of the material comprising the sheet in a direction along the thickness of the same is exposed to stress above the yield... | 01/19/1988 |
| 4685513 | Engine cooling fan and fan shrouding arrangement Compact fan and shroud package for radiators with fan blades curved rearwardly to position rotating shroud at optimized distance from radiator for improved air flow through radiator.... | 08/11/1987 |
| 4657483 | Shrouded household fan An extremely efficient, substantially noiseless portable fan suitable for household use is provided which produces a highly focused, homogeneous stream of substantially laminar flow air to achieve effective air movement and cooling throughout an entire ro... | 04/14/1987 |
| 4634342 | Blower for agricultural spraying An air blower (particularly for agricultural spraying purposes) comprises a fan, an annular fan housing, a curved air deflector downstream of the fan, and a curved air-flow divider. The fan housing has a frusto-conical intake section and a curved outflow ... | 01/06/1987 |
| 4599041 | Variable camber tandem blade bow for turbomachines Multiple flat-plate blade rows of pitch adjustable blades are offset mounted in a manner such that when flat-plate blades in adjacent rows are aligned at a specific pitch setting, respective flat-plate blades of the adjacent rows nearly mate. The offset b... | 07/08/1986 |
| 4564335 | Axial flow fan An axial-flow fan comprising a fan wheel surrounded by a casing, the casing having a cylindrical flow passage in its axial central portion which is broadened at least toward the exhaust side by way of corner pockets into a regular multi-corner profile cir... | 01/14/1986 |
| 4482302 | Axial electric fan of the flat type The cross-sectional area of the airflow duct on at least one face of the fan housing is larger than the cross-sectional area of a cylindrical portion of duct which cooperates with the impeller. A junction portion having an S-shaped cross-section in an axi... | 11/13/1984 |
