Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8092180 | Blade assembly for a ceiling fan A blade assembly for a ceiling fan includes a mounting arm, a bearing, a cover, a spiral spring, a blade, and three screws. The mounting arm has a plate. The plate has a boss. The boss has a split. The bearing is sleeved on the boss. The cover has a stub. The stub h... | 01/10/2012 |
| 7857590 | Folding rotor for a rotorcraft A folding rotor has a hub bar pivotally connected to a rotor blade. The hub bar is adapted to be connected to the rotorcraft, and includes a first locking aperture having a resilient bushing. The rotor blade includes a rotor strap that extends to a mounting element ... | 12/28/2010 |
| 7648339 | Fabric fan blades Cloth or fabric fan blades self-inflate when rotated about an axis to produce air movement, the blades being secured to a fan hub which is in turn connected to a fan motor assembly that provides the rotational force to inflate the blades, the blades collapsing upon ... | 01/19/2010 |
| 7494320 | Rotor for passively stable helicopter A rotor (10) that enables an aircraft to become passively stable in hover. The inner part of the rotor blades (11) have a pitch angle fixed relative to a reference plane perpendicular to the rotor shaft (18) axis, and the tip of the rotor blades... | 02/24/2009 |
| 7442009 | Driving device for raising or lowering an airfoil A wind turbine assembly with a driving device for raising and lowering a wind turbine between a lower end and an upper end of a wind turbine tower comprises a guide member extending longitudinally along the outer surface of the tower, a sleeve member coupled to the ... | 10/28/2008 |
| 7416392 | Stow abort mechanism for a ram air turbine A stow abort mechanism for a ram air turbine (RAT) with a strut that rotates a turbine with associated blades from a stowed position to a deployment condition comprises a stow abort lock plate with an aperture that rotates with the strut and a stow abort lock pin th... | 08/26/2008 |
| 7396207 | Wind turbine A wind turbine comprising: (1) a support portion; (2) a hub that is mounted to rotate adjacent the support portion; and (3) at least one turbine blade mounted adjacent the hub and that comprises both a rotor and a sail that is mounted adjacent the rotor. The rotor m... | 07/08/2008 |
| 7393181 | Expandable impeller pump An impeller according to an example of the present invention comprises a hub, and at least one blade supported by the hub. The impeller has a deployed configuration in which the blade extends away from the hub, and a stored configuration in which the impeller is rad... | 07/01/2008 |
| 7353603 | Method for mounting rotor blades to a rotor hub of a wind power installation A method of mounting rotor blades to a rotor hub which is connected to a pod of a wind power installation, includes the following steps: rotating the rotor hub into a predetermined first position, fitting a rotor blade, rotating the rotor hub by means of the rotor b... | 04/08/2008 |
| 7352076 | Small wind turbine system A small wind-powered electricity generation system, providing regulated AC electric power from wind energy to a power system grid, has a wind turbine that produces less than 10 kW of peak electric power in a permanent magnet generator that produces generator power w... | 04/01/2008 |
| 7338257 | Device for interacting with a fluid moving relative to the device and vehicle including such a device A device (10) for interacting with a fluid (12) moving relative to the device. The device comprises a body with an axis of rotation (22) and a periphery (24). The body is rotatable about the axis of rotation. The device also comprises a p... | 03/04/2008 |
| 7326035 | Device for attaching a moving blade to a turbine rotor disk in a turbomachine An attachment device for attaching a blade to a turbine rotor disk in a turbomachine, the blade root forming a male portion engaged and held radially in a cavity of complementary shape in the rotor disk, with means for preventing the blade root from moving axially i... | 02/05/2008 |
| 7320735 | Fan cleaning method and apparatus A simple yet effective system for cleaning fans and air circulators facilitates the cleaning of ceiling and hard-to-reach units without having to remove the blades or other parts to be cleaned. A flexible bag encloses parts of a fan to be cleaned. A source of compre... | 01/22/2008 |
| 7318702 | River turbine A water wheel assembly is disclosed and comprises a water wheel including a plate having a rotation axis and a plurality of circumferentially-spaced receivers, each including a first slit defined through the plate, proximal to the axis, and a second slit defined thr... | 01/15/2008 |
| 7296974 | Wind energy turbine The invention relates to a wind turbine and to the installation of such a wind turbine, particularly offshore. When wind turbines are installed in the previously known manner, a tower of the wind turbine is firstly manufactured, said tower being a steel tower, a con... | 11/20/2007 |
| 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 |
| 7241105 | Watercraft with vertically collapsible vertical axis wind turbine and propeller flexible drive shaft A vertically collapsible vertical axis wind turbine may be used on land, or on a watercraft (e.g. a multihull such as a catamaran). The turbine may include a substantially vertical shaft; at least two vane supports mounted by the shaft; and at least two vertically c... | 07/10/2007 |
| 7231741 | Mobile cellular telephone tower A mobile cellular telephone tower comprises a self-propelled base and a tower connected to the base. The tower includes a base segment and at least a first extendable segment operatively connected to a second extendable segment. A winch is connected to the base, and... | 06/19/2007 |
| 7218013 | Wind powered generator A wind powered electrical generation assembly having a portable wind powered generator tower for supporting a wind powered generator allowing the wind powered generator to be raised, lowered, and removed from the tower. The wind powered electrical generation assembl... | 05/15/2007 |
| 7213644 | Cavity positioning tool and method In accordance with the teachings of the present invention, a method is provided for preventing formation of sludge in a subsurface cavity having particulate laden fluid disposed therein. The method includes positioning a downhole device having a fluid agitator into ... | 05/08/2007 |
| 7207777 | Methods of handling wind turbine blades and mounting said blades on a wind turbine, system and gripping unit for handling a wind turbine blade The invention relates to methods of handling wind turbine blades and mounting said blades on a wind turbine, said method comprising the steps of lifting a wind turbine hub to the nacelle of wind turbine with a lifting system and mounting the hub on the nacelle. Furt... | 04/24/2007 |
| 7204674 | Rotor blade for a wind power installation A rotor for a wind power installation having at least one rotor blade. The smaller the surface area on which the wind acts, that is to say in particular the rotor blade area, the correspondingly lower is the load level for which installation has to be designed and t... | 04/17/2007 |
| 7192252 | Safety device for a wind turbine The mast (2) of the wind turbine is formed by at least two segments (13, 15) articulated to one another so as to pivot between a straightened position and a folded position. The pivoting of the two segments (13, 15) is coordinated in such a way ... | 03/20/2007 |
| 7183939 | Shining fan structure for displaying images A shining fan structure for displaying images of patterns or characters by reflection mainly includes a fan. A plurality of blades of the fan are provided with reflective patterns or characters. Light-emitting elements are provided on the periphery of the fan base. ... | 02/27/2007 |
| 7134844 | Install blade bracket for a ceiling suspended fan A install blade bracket for a ceiling suspended fan comprises: a discal seat is disposed at a bottom of the rotary assembly, the discal seat is formed with a recess, in the recess are defined a plurality of locking cavities and a plurality of receiving cavities, a p... | 11/14/2006 |
| 7134574 | Integral pour spout for paint cans and similar containers An improved resilient pour spout for paint cans and similar containers that seals off the groove into which the lid of the container mates while preventing the liquid contents from flowing down the surface of the container. When not in use, the spout is stored on th... | 11/14/2006 |
| 7090550 | Propeller with variable geometry and method for varying geometry of a propeller The present invention broadly comprises a propeller having a blade assembly with a plurality of linking members operatively connected to change dimensions of the blade assembly as the linking members are moved with respect to one another. It further includes a blade... | 08/15/2006 |
| 7084523 | Windmill for wind power generation A windmill for highly efficient wind power generation is provided by enabling one to efficiently rotate the windmill even in starting or at a low wind speed region by improving a blade of a vertical shaft type windmill of a lift type. In the windmill for wind power ... | 08/01/2006 |
| 7077631 | Ram air turbine with speed increasing gearbox A ram air turbine power system includes a ram air turbine having a turbine shaft, turbine blades for rotating the turbine shaft; and an electrical generator or other power source device driven by a power shaft, for providing power. The power shaft has a generally ho... | 07/18/2006 |
| 7062883 | Self guying communication tower A mobile communication tower comprising a trailer comprising a chassis, mounted on two or more wheels, a hitch, a plurality of chassis guy wire attachment points and a plurality of leveling mechanisms; a telescopic tower pivotally mounted on the trailer; a mechanism... | 06/20/2006 |
| 7040210 | Apparatus and method for restraining and releasing a control surface An apparatus includes a restraint for restraining a first control surface in a stowed configuration and a severing mechanism for parting the restraint to allow the first control surface to move into an operational configuration. A vehicle includes a body, a first co... | 05/09/2006 |
| 6997740 | Ceiling fixture with easy installation features Various forms of ceiling fan with easy install features are disclosed. The fans include an electrical quick connect device. The quick connect device includes a plug/receptacle configuration enabling the fan to easily connect to an electricity supply while providing ... | 02/14/2006 |
| 6991431 | Ceiling fan blade The present invention relates to a ceiling fan blade capable of producing full wind pressure and much wind. The solution of the present invention is to form a front and a rear wind receiving surfaces on the ceiling fan blade. A tangent angle of the rear wind-receivi... | 01/31/2006 |
| 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 |
| 6902370 | Telescoping wind turbine blade A wind turbine blade made of a fixed blade section with an integral mounting flange for attachment to a wind turbine hub. A moveable blade section is attached to the fixed blade section and is free to move in a longitudinal direction relative to the fixed blade sect... | 06/07/2005 |
| 6863498 | Blade spreading assembly for quick ceiling fan installation A blade spreading assembly for quick ceiling fan installation is disclosed. The blade spreadingassembly comprises a fan rotor bracket attached to the fan rotor and operatively coupled to an arm which connects to fan blade. The assembly allows the attached fan blade ... | 03/08/2005 |
| 6860713 | Fan with collapsible blades, redundant fan system, and related method A redundant fan system for a computer includes two fans installed in series with at least one of the fans having collapsible blades. A fan system of this type reduces the fan inefficiency caused when one fan in a series mounted pair is not operating, either because ... | 03/01/2005 |
| 6830430 | Fan with a separable flying disc A Frisbee™ fan comprises a fan body made from a fabric bordered by a flexible strip on the peripheral rim thereof and a folding plate clamping the fan body for generating a strong air flow. The fan body may be printed with a selected pattern. The fan body may be s... | 12/14/2004 |
| 6695253 | Method and apparatus for folding/unfolding the blades of a rotary-wing aircraft rotor To fold/unfold blades of a rotor, at least one variable-length linear actuator is removably attached to two blades locked in the flight position. A first blade is unlocked, and the actuator is actuated to vary its length and bear against the other blade w... | 02/24/2004 |
| 6676379 | Ram air turbine with speed increasing gearbox A ram air turbine power system includes a ram air turbine having a turbine shaft, turbine blades for rotating the turbine shaft; and an electrical generator or other power source device driven by a power shaft, for providing power. The power shaft has a g... | 01/13/2004 |
