Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8157510 | Flexible impeller apparatus and method Embodiments of the invention provide an impeller assembly having a flexible impeller and a method of replacing a removable drive mechanism. The impeller assembly includes an impeller having an outer portion defining a substantially cylindrical shape, at least one fl... | 04/17/2012 |
| 7866942 | Dry running flexible impeller pump and method of manufacture This invention relates to a Dry Running Flexible Impeller Pump and Method of Manufacture that is specifically designed to provide a flexible impeller pump that is capable of being run dry for extended periods of time without damaging the impeller. The pump's housing... | 01/11/2011 |
| 7425117 | System and method for reducing back flow A system and method of reducing back flow in an air mover having one or more blades is described. A flap is attached to a blade of the air mover such that, when back flow occurs, the flap obscures all or a portion of the space between blades during back flow. ... | 09/16/2008 |
| 7422416 | Device for effecting heat transfer to rotating equipment, in particular gas turbines A device for effecting heat transfer to rotating equipment, in particular gas turbines, is provided. A gas turbine (10) comprises a first rotating unit (11), i.e. an internal shaft and a second fixed unit (16), i.e. a housing. A third rotating u... | 09/09/2008 |
| 7325269 | Scraper blade interlocking attachment apparatus and method Attachment apparatus and method for interlocking attachment of a scraper blade with a drive shaft of a scraped surface heat exchanger includes a blade having dual attachment beams and a central locking member, and at least one pin having dual fingers each for interl... | 02/05/2008 |
| 7270513 | Apparatus and method for generating power from moving water Apparatus for generating power from a water current in a body of water comprises a longitudinally extending flotation platform for maintaining the apparatus afloat in the body of water and a water turbine operatively carried by the platform for generating power in r... | 09/18/2007 |
| 7184268 | Dynamically adaptable electronics cooling fan In an electronic system, a method for operating a cooling fan comprises rotating an impeller about a rotational axis and detecting fan failure. The impeller is spatially expanded in response to the detected fan failure whereby airflow through the failed fan is block... | 02/27/2007 |
| 7083382 | Vertical axis wind turbine The present invention provides a prime mover (2) for harnessing energy from a flow of fluid, the prime mover (2) comprising a shaft (4) having a rotational axis, arranged to be rotatably mounted to a substructure, the shaft (4) comprising... | 08/01/2006 |
| 7054156 | Fan rotor systems having collapsible fan blades A fan rotor system for cooling an electronic system includes a rotor body configured to be rotated by a fan motor and at least one collapsible fan blade mounted on the rotor body for moving cooling air through the electronic system. The at least one collapsible fan ... | 05/30/2006 |
| 7014417 | Auto suction hybrid pump A hybrid pump (1) with a housing (2) comprising at least one suction port (10) and at least one pressure port (11). A rotor (5) is eccentrically arranged in the housing chamber (3) which is substantially enclosed in a circul... | 03/21/2006 |
| 7011501 | Energy generating system A system (1) designed to generate energy with the aid of, primarily, sea currents, comprising a rotation body (4) having a front inlet side (2) and a rear outlet side (3), and at least one transfer member (6) connected between the ... | 03/14/2006 |
| 7001155 | Compressor impeller with stress riser A compressor impeller for use with a boreless turbocharger is provided in accordance with this invention. The compressor impeller comprises an integral hub projecting axially therefrom that includes a partial bore therein that extends from an open to a close bore en... | 02/21/2006 |
| 6972956 | Collapsible fan and system and method incorporating same A collapsible fan. The collapsible fan may be disposed in parallel or series with one or more other fans. If the collapsible fan becomes inactive or non-operable, such as by malfunction or failure, then its fan blades collapse to a less restrictive flow configuratio... | 12/06/2005 |
| 6966757 | Scraper blade attachment apparatus and method with split pin An attachment apparatus and method for interlocking attachment of a scraper blade with a drive shaft of a scraped surface heat exchanger includes a blade having dual attachment beams and a central locking member, and at least one pin having dual fingers each for int... | 11/22/2005 |
| 6958058 | Methods and devices for pumping fluid and performing surgical procedures Devices and methods of use of such devices for pumping fluid and for use in surgical procedures preferably include vacuum-driven pumps for providing irrigation and suction functions to the surgical field. Such pumps may be freestanding, external to or integrated int... | 10/25/2005 |
| 6935839 | Variable flow water pump A variable-capacity water pump includes a housing having an impeller mounted on a rotatable shaft. The impeller includes a plurality of vanes pivotally coupled between upper and lower shroud and operatively coupled to a pitch plate. As the pump speed increases in re... | 08/30/2005 |
| 6923618 | Rotary motor A turbine engine that includes a housing having a circular cavity of an inlet and an outlet that provide fluid communication to and from the circular cavity. A rotor having a circular body and least one sealing fin extending from the circular body to the cavity wall... | 08/02/2005 |
| 6877968 | Low head water turbine A low head water turbine comprising a runner having a cylindrical outer surface and a plurality of similar blades similarly pivotably secured along their inner sides to the outer surface of the runner so as to pivot in the direction of rotation of the runner between... | 04/12/2005 |
| 6719525 | Submerged motor vane wheel rotation direction control structure A submerged motor vane wheel rotation direction control structure includes a blade pivoted to a locating block inside of the water guide chamber of a submerged motor, a vane wheel, the vane wheel having sloping teeth radially extended from the motor shaft of the sub... | 04/13/2004 |
| 6666650 | Wind power facility with a verticle rotor The invention relates to a wind power facility with a vertical rotor for generating energy, wherein a three-blade rotor (5) operates according to the cross-flow principle. The outer admission surface construction (1) and the facility has the shape of a to... | 12/23/2003 |
| 6547519 | Blower impeller apparatus with pivotable blades Blower designs for vented enclosures include an impeller having a plurality of blades. The impeller includes a plurality of blades pivotably coupled to an impeller body. The blades pivot to enable operation in one of a closed and an open state. Air flow b... | 04/15/2003 |
| 6547517 | Fluid impeller A fluid impeller, such as a fan for moving air or gases, includes one or more rotatable fluid impelling blades; a flow guiding member adjacent to an edge of the blades, and at least one blade facing surface of the flow guiding member being formed substant... | 04/15/2003 |
| 6398490 | Oscillating microturbine An oscillating micro turbine is formed of a turbine that oscillates back and forth. The turbine is formed with a flexure which is pressed by fluid flow to oscillate in specified directions.... | 06/04/2002 |
| 6386826 | Fan with self closing blades A fan system to be mounted over an opening including a plurality of pivoting blades fixed on a free wheeling element and a motor driven element wherein, in operation, when the fan is operating the motor driven element pivots the blades to a blowing positi... | 05/14/2002 |
| 6328528 | Elastomeric pump impeller A water pump with a plurality of elastomeric blades on a rigid impeller is disclosed. The impeller has a tubular extension with a pair of flats on the outer diameter of the extension. The seal seat has a corresponding pair of flats on its inner diameter t... | 12/11/2001 |
| 6292970 | Turbine-driven automatic swimming pool cleaners An automatic pool cleaner having a turbine including a housing having a flow chamber and chamber wall with inlet and outlet ports, a rotatably-mounted turbine rotor, and turbine vanes each having a proximal end connected to the rotor and a distal end mova... | 09/25/2001 |
| 6264450 | Flexible vane pump A pump has a rotor with two or more flexible vanes forming one or more compartments between adjacent vanes. The rotor is mounted offset relative to a rotor sleeve such that the volume of the compartments varies as the rotor rotates in the sleeve. Incoming... | 07/24/2001 |
| 6210113 | Water wheel turbine for water power stations A waterwheel turbine for application in hydropower plants is provided. This turbine exploits primarily the head of the watercourse for energy recovery. The cells of the waterwheel turbine are each provided with a pair of mechanically linked flaps for cont... | 04/03/2001 |
| 6116855 | Flexible impeller removal system A flexible impeller has an insert design incorporating a threaded end within its insert that cooperates with a threaded removal tool for jacking the impeller from the shaft by rotation of the threaded removal tool.... | 09/12/2000 |
| 6109863 | Submersible appartus for generating electricity and associated method A fully submersible apparatus for generating electricity from liquid flow as in an ocean or river current. A buoyant structure is fully submersible and has at least one pair of counter-rotating side-by-side motors with a plurality of angularly spaced radi... | 08/29/2000 |
| 6015263 | Fluid moving device and associated method A fluid moving device (100) includes a rotatable assembly (101), and a plurality of fan blades (102-04) disposed circumferentially around and extending outward from rotatable assembly (101), at least one of plurality of fan blades (102-04) includes shape ... | 01/18/2000 |
| 5984654 | Compressed air driven disposable hand tool having a rotor with radially moving vanes A fluid reaction device (10) is provided having a rotor (90) with vanes (92) pivotably connected thereto. The device (10) includes an entrance (30) for elevated pressure fluid and an outlet (40) for discharge of the fluid after contacting the rotor (90). ... | 11/16/1999 |
| 5743718 | Compressed air driven disposable hand tool having a rotor with radially moving vanes A fluid reaction device (10) is provided having a rotor (90) with vanes (92) pivotably connected thereto. The device (10) includes an entrance (30) for elevated pressure fluid and an outlet (40) for discharge of the fluid after contacting the rotor (90). ... | 04/28/1998 |
| 5711657 | Centrifugal pump, particularly for fountains A centrifugal pump, particularly for fountains and aquariums, for which an electric motor and a pump are disposed coaxially to one another, the electric motor being constructed as a single-phase synchronous motor with a permanent magnet rotor and connecte... | 01/27/1998 |
| 5697773 | Rotary fluid reaction device having hinged vanes A fluid reaction device 10 is provided having a rotor 90 with vanes 92 pivotably connected thereto. The device 10 includes an entrance 30 for elevated pressure fluid and an outlet 40 for discharge of the fluid after contacting the rotor 90. The elevated p... | 12/16/1997 |
| 5667383 | Disposable dental prophylaxis handpiece A disposable dental prophylaxis handpiece 10 is provided having a rotor 90 with vanes 92 pivotably connected thereto. The handpiece 10 includes an entrance 30 for elevated pressure fluid and an outlet 40 for discharge of the fluid after contacting the rot... | 09/16/1997 |
| 5449280 | Pump including integral reservoirs for permitting dry run of pump A pump having a housing with an integral fluid reservoir and flexible end plates to permit the pump to be run dry for an extended period of time. A pair of reservoirs are provided, one each side of a pumping chamber. These reservoirs are in fluid communic... | 09/12/1995 |
| 5306118 | Mounting gas turbine outlet guide vanes An assembly for supporting knitted outlet guide vanes in a gas turbine engine comprises an exhaust difusser cone, an exhaust discharge duct surrounding and coaxial with the diffuser cone, and an annular array of the vanes extending radially between the di... | 04/26/1994 |
| 5297933 | Cantilever paddlewheel apparatus This invention is a paddlewheel apparatus having an epicyclic gear train in a rotatable holder at an end of a plurality of cantilevered paddles. The paddles are maintained substantially vertical throughout the rotation of the holder and they are completel... | 03/29/1994 |
| 5195872 | Paddlewheel apparatus This invention is a paddlewheel apparatus having epicyclic gear trains in rotatable holders at opposite ends of a plurality of paddles. The paddles are maintained substantially vertical throughout the rotation of the holders and they are completely unobst... | 03/23/1993 |
