Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7682128 | Axial fan having adjustable blades and method of mounting the blades An axial fan comprising an impeller provided with a supporting ring on which is disposed an adapter. Spindles are rotatably mounted in the supporting ring, and adjustable blades are connected to the spindles. A support is provided for each spindle and is comprised o... | 03/23/2010 |
| 7448847 | Turbine with adjustable vanes There is provided an adjustable vane turbine and turbine generator using the same, in which hydrodynamic properties are employed to adjust adjustable vanes automatically in response to flow condition such as the flow rate of the working fluid, thereby simplifying th... | 11/11/2008 |
| 7351042 | Structure of scroll of variable-throat exhaust turbocharger and method for manufacturing the turbocharger A ratio of cross sectional area A of a scroll passage to a scroll radius R (A/R) can be increased without increasing the size of a turbine casing and with very simple construction. An exhaust turbine capacity can thus be increased, so that a variable-throat exhaust ... | 04/01/2008 |
| 7300245 | Stator vane stage actuated by an automatically-centering rotary actuator ring A variable pitch stator vane stage, said vanes being moved by an automatically-centered rotary actuator ring. The casing carries a stationary coaxial annular rail projecting from its outside surface, and circumferentially spaced apart moving equipments are provided ... | 11/27/2007 |
| 7278819 | Variable stator vane lever arm assembly and method of assembling same A variable stator vane assembly for a gas turbine engine including an actuation ring including an upper surface, a lower surface, a first side, a second side, and at least one recess that is defined between the upper surface, the lower surface, the first side, and t... | 10/09/2007 |
| 7261513 | Centrifugal compressor A centrifugal compressor has a housing assembly and an impeller rotatably connected to the housing assembly. Gas introduced into the housing assembly by rotation of the impeller is compressed at least by centrifugal force. One aspect of the present invention is that... | 08/28/2007 |
| 7238104 | System and method for venting air from a computer casing A vent for a computer enclosure is envisioned. The vent system has a fan, operable to draw a flow of air from within the enclosure and direct it out through an outlet vent disposed in a wall of the enclosure. The outlet vent is made of an outlet path. The outlet pat... | 07/03/2007 |
| 7128526 | Anti-reverse flow mechanism for centrifugal blowers A set of cooling air blowers for machines which require cooling air during operation. The blowers each include an outlet having an anti-reverse flow feature for preventing the flow of air into the blower from externally of the machine should the blower fail, thereby... | 10/31/2006 |
| 7112040 | Method of guiding a blade having a variable pitch angle A guide device for guiding a variable-pitch blade, in particular in a turbomachine compressor, the blade having a pivot formed by a cylindrical axial shank mounted in a cylindrical housing of a casing and pivotally guided about an axis in said housing by bearings, w... | 09/26/2006 |
| 7004723 | Device for controlling variable-pitch vanes in a turbomachine A device for controlling variable-pitch vanes in a turbomachine comprises links connecting the radial pivots of the vanes to radial fingers carried by semicircular elements and bridges of a control ring, the links being mounted in ball-and-socket manner on the radia... | 02/28/2006 |
| 6994518 | Pre-whirl generator for radial compressor A pre-whirl generating apparatus (26) is provided that employs deformable air deflecting vanes (46) adjacent the inlet (18) of a radial air compressor (12-22), which vanes (46) can be mechanically deformed to generate positi... | 02/07/2006 |
| 6953320 | Ventilation fan A ventilation fan assembly (10) having a fan (22) mounted in a housing (12) and a shutter assembly (60). The housing has a square inlet portion (12C), a circular center portion (12E) and a conical outlet portion (12D)... | 10/11/2005 |
| 6932561 | Power generation system A wind power system is provided including at least one generator fan having a front face and a rear face. The system also includes a first wind capturing device positioned proximate to the front face. The wind capturing device can be configured to capture wind to cr... | 08/23/2005 |
| 6932565 | Turbine A turbine comprises a turbine wheel having radial blades and supported in a housing for rotation about an axis. An annular inlet passageway extends radially inwards towards the turbine wheel, the inlet passageway being defined between first and second facing annular... | 08/23/2005 |
| 6769449 | Water booster methods and apparatus Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a second, discrete passage. Vanes on the second impeller are constraine... | 08/03/2004 |
| 6648595 | Pump with selectable suction ports A circulator-pump-motor-unit which has two inlet ports and means to change the path of the hot water conveyed between these ports so that either the hot water system or the hydronic system gets heat.... | 11/18/2003 |
| 6616404 | Ventilation fan A ventilation fan assembly (10) having a fan (22) mounted in a housing (12) and a shutter assembly (60). The housing has a square inlet portion (12C), a circular center portion (12E) and a conical outlet portion (12D) having rifling grooves (20). The shou... | 09/09/2003 |
| 6511285 | Tandem guide vanes Two stages of relatively rotatable guide vanes (22,24) are arranged in tandem. Shroud portions (42,46) on the vanes overlap in loose engagement, until an associated gas turbine engine starts operating. Gas loads then act on the downstream vane stage (24) ... | 01/28/2003 |
| 6481957 | Modular wind energy device A modular wind energy device for converting wind energy into mechanical energy, which includes a support structure configured for placement onto a support surface (36) and defining an axis of rotation (23) generally parallel thereto; one or more panemone ... | 11/19/2002 |
| 6461104 | Flow regulator for a water pump A flow regulator for a water pump, comprising a control valve. The control valve is mounted on an inlet pipe of a water pump and has a chamber, housing a flat-shaped control plate, the upper part of which forms a piston plate, vertically gliding in an upp... | 10/08/2002 |
| 6454528 | Intake and exhaust damper with movable motor fan assembly An intake and exhaust damper assembly has a motor and fan assembly pivotally mounted for movement toward and away from a louvered rotatable blade damper.... | 09/24/2002 |
| 6390772 | Axial flow turbine air economizer Nozzle control apparatus for an axial flow air turbine having an inlet nozzle for air entering the turbine and an associated turbine inlet housing for channeling air flowing to the inlet nozzle for at least partially blocking air flow from the turbine inl... | 05/21/2002 |
| 6386828 | Ventilation fan A ventilation fan assembly (10) having a fan (22) mounted in a housing (12) and a shutter assembly (60). The housing has a square inlet portion (12C), a circular center portion (12E) and a conical outlet portion (12D) having rifling grooves (20). The shou... | 05/14/2002 |
| 6238178 | Water booster methods and apparatus Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a second, discrete passage. Vanes on the second impeller are... | 05/29/2001 |
| 6190122 | Intake and exhaust air damper with movable motor fan assembly An intake and exhaust fan assembly is provided having a motor and fan assembly mounted for movement on rails toward and away from a rotatable blade damper mounted on an angle to the motor/fan assembly.... | 02/20/2001 |
| 6164906 | Regulating valve for engines operated by a medium under pressure A regulating valve for engines operated by a medium under pressure, in particular compressed air operated engines, in order to regulate the flow of compressed air to the engine to provide a substantially constant revolution rate at varying load, the regul... | 12/26/2000 |
| 6113348 | Impulse turbine An impulse turbine comprises at least one runner keyed to a drive shaft in association with a distributor unit which has, for each runner, a circular outlet for the supply of fluid from the distributor unit to the blades of a respective runner. Each outle... | 09/05/2000 |
| 6039533 | Fan blade, structures and methods An aerodynamic-shaped fan blade for use in a fan apparatus. The blade has a cross-section which is essentially an inverted pan-shape with an intermediate section, a leading edge section, and a trailing edge section which form concave and convex surfaces. ... | 03/21/2000 |
| 6012897 | Free rotor stabilization In a turbo compressor, such as a centrifugal compressor, having swirl inducing structure, such as inlet guide vanes, one or more free rotors are located intermediate the swirl inducing structure and the inlet of the compressor. The free rotors are driven ... | 01/11/2000 |
| 6010307 | Propeller, structures and methods An aerodynamic-shaped propeller blade. The blade has a cross-section which is essentially an inverted pan-shape with an intermediate section, a leading edge section, and a trailing edge section which form concave and convex surfaces. The trailing edge has... | 01/04/2000 |
| 5611664 | Apparatus to achieve passive damping of flow disturbances in a centrifugal compressor to control compressor surge An apparatus achieves passive damping of flow disturbances to control centrifugal compressor surge. The apparatus includes a centrifugal compressor for compressing a low pressure fluid. The centrifugal compressor has an impeller, an inlet which communicat... | 03/18/1997 |
| 5605435 | Method and apparatus to achieve passive damping of flow disturbances in a centrifugal compressor to control compressor surge An apparatus achieves passive damping of flow disturbances to control centrifugal compressor surge. The apparatus includes a centrifugal compressor for compressing a low pressure fluid. The centrifugal compressor has an impeller, an inlet which communicat... | 02/25/1997 |
| 5582505 | Bore-hole pump A bore-hole pump for pumping a highly viscous fluid, into which is fed a solvent which has a low viscosity and which is miscible with the fluid. A shutoff device is disposed between an inlet of the bore-hole pump and an actual inlet of the pump part. The ... | 12/10/1996 |
| 5531566 | Self regulating bleed valve A self regulating bleed valve for a gas turbine engine is provided which taps or bleeds a portion of a gas, typically air, from a duct of the gas turbine having a wall bounding the gas flow. The bleed valve has a valve member pivotally attached to the wal... | 07/02/1996 |
| 5516262 | Automatic pump An improved automatic pump capable of advantageously reducing manufacturing processes thereof as well as significantly preventing pressure decrease in a pump assembly by providing a pressure control tube and removing a sealing process thereof, which inclu... | 05/14/1996 |
| 5505587 | RAM air turbine generating apparatus A ram air turbine generator comprises a cylindrical external fairing having bypass exhaust orifices adjacent the leading end and external exhaust ports adjacent the aft end. A central flow guide is coaxially mounted and has a contoured outer surface space... | 04/09/1996 |
| 5478203 | Blade pitch change mechanism A pitch change mechanism for a plurality of fan blades (12) comprises adjustment device (60) to rotate the blades (12) about their longitudinal axes. A gear box (34) provides rotary power to drive the adjustment device (60) in response to a control signal... | 12/26/1995 |
| 5437539 | Apparatus for the dynamic control of rotating stall and surge in turbo machines and the like The invention is a turbo machine comprising a rotatably mounted blade row, such as a compressing or pumping rotor and apparatus for providing aerodynamic feedback to the blade row which feedback apparatus has substantially zero pressure difference across ... | 08/01/1995 |
| 5235812 | Integrated power unit The invention relates to secondary power system apparatus and method for use aboard aircraft in place of conventional auxiliary power units (APU's) and emergency power units (EPU's). The invention integrated power unit (IPU) performs the function of both ... | 08/17/1993 |
| 4848084 | Hydrodynamic torque converter having variable stator plate orifice A hydrodynamic torque converter includes a pump wheel, a turbine wheel, and a stator wheel having a variable entrance between the blade rows upon at least one of these wheels, preferably on the stator wheel. The opening between the blades is adjustable au... | 07/18/1989 |
