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| Number | Title | Issue Date |
| 8167561 | Helicopter aircraft vehicle rotor damper A helicopter rotor damper system including a torsional damper with a damper centering bearing providing a damper center of rotation axis, a first elastomeric torsional damper with a first elastomeric torsional damper torsional elastomer bonded between a first elasto... | 05/01/2012 |
| 8123483 | To rotorcraft rotors fitted with inter-blade dampers The present invention relates to an improvement to rotorcraft rotors (1) fitted with inter-blade drag dampers (15) such that for each blade (4), the two joints (16) connecting said blade (4) to two inter-blade drag dampers (15 | 02/28/2012 |
| 7744349 | Blade flap locking for out-of-use helicopters In the absence of centrifugal force produced during rotation of helicopter blades, damage may result if a blade is rotated upward by wind or other forces. Lock units removably appended between the rotor assembly and each blade pitch housing attached to a helicopter ... | 06/29/2010 |
| 7448855 | Droop stop mechanism for helicopter rotor blade A droop stop mechanism for a helicopter rotor blade includes a pair of opposing stops disposed on opposite sides of the blade's flap hinge. An interposer is mounted at the end of an arm on a rotatable shaft for rotation in a plane perpendicular to the hinge. A torsi... | 11/11/2008 |
| 7368158 | Elastomeric member provided with monitoring means The present invention relates to problems of maintenance of elastomeric members. According to the invention, the elastomeric member is provided with at least one elastomeric layer 1 disposed between two rigid strength members 2. In addition, the elasto... | 05/06/2008 |
| 7360994 | Method of controlling vibration damping in a helicopter, and apparatus implementing the method The present invention relates to a method of controlling a drag damper for a helicopter blade under all operating configurations of the helicopter, the method consisting in: a) measuring the elongation of the damper; | 04/22/2008 |
| 7354248 | Elastomeric bearing elements for droop stop mechanisms An elastomeric bearing element having an outer race, an inner race, and at least two elastomeric segments secured between the inner and outer races is provided. The elastomeric segments are spaced from one another by a corresponding number of expansion segments. The... | 04/08/2008 |
| 7334994 | Automatic self-feathering and resetting sail restraint for migler's vertical axis wind turbine An improved sail restraint for Migler's vertical axis wind turbine in which excessive wind speed automatically causes the sails to be feathered, protecting them from wind damage, and, when the wind speed is reduced to an allowable level, the improved sail restraint ... | 02/26/2008 |
| 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 |
| 7270321 | Fluid-elastomeric damper assembly including internal pumping mechanism A fluid-elastomeric damper assembly operable for damping relative motion between a first structure and a second structure including a housing structure grounded to the first structure and a plurality of elastomer seals coupled to the housing structure, the housing s... | 09/18/2007 |
| 7258527 | Vertical axis wind engine The present invention is to provide a vertical axis wind engine comprising at least one arm each having its center rotatably coupled to a vertical axis mounted on a base on the ground, each pair of the upper and lower arms adapted to define an airfoil receiving spac... | 08/21/2007 |
| 7198469 | Wind generator of the type with automatic power regulation The invention relates to a wind generator of the type with automatic power regulation, comprising at least one propeller having at least two blades (21), whereby the efficiency of one propeller varies inversely to a variation in the wind energy, from a lower ... | 04/03/2007 |
| 7198460 | Hydraulic or pneumatic machine with tilting blades This invention refers to a hydraulic or pneumatic machine with tilting blades, running either as an engine on a fluid flow or on pressure fluid or as a pump or a compressor. The hydraulic or pneumatic machine on a fluid flow according to the invention consists of a ... | 04/03/2007 |
| 7182306 | Engine mount An engine mount including a rubber elastic body connecting an upper and lower mounting plate fixture and a rebound stopper mechanism having an upper stopper integrally formed with an upper mounting plate fixture and a lower stopper integrally formed with a lower mou... | 02/27/2007 |
| 7178794 | Fluid isolator assembly and floating elastomeric damping element An isolator apparatus is described to attenuate or isolate vibration. The isolator apparatus includes a fluid isolator assembly including a flexible diaphragm and a pressure chamber having a flow passage opened to the pressure chamber to provide a fluid spring. A fl... | 02/20/2007 |
| 7153100 | Ceiling fan with retractable fan blades A ceiling fan with retractable fan blades includes an electric motor operable to spin a rotor with a plurality of fan blades attached thereto. Each of the fan blades is operable to move between a closed position and an open position. A rotatable center ring is inclu... | 12/26/2006 |
| 7137624 | Fluid-elastomeric damper assembly including internal pumping mechanism A fluid-elastomeric damper assembly operable for damping relative motion between a first structure and a second structure including a housing structure grounded to the first structure and a plurality of elastomer seals coupled to the housing structure, the housing s... | 11/21/2006 |
| 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 |
| 7037072 | Rotor head for a rotary-wing aircraft A preferred embodiment of a rotor head for a rotary-wing aircraft having a plurality of rotor blades and a drive shaft includes a gimbal mechanically coupled to the drive shaft so that the gimbal rotates with the drive shaft, and a hub pivotally coupled to the gimba... | 05/02/2006 |
| 6988873 | Monodirectional impeller with flexible vanes A monodirectional impeller for centrifugal electric pumps having a permanent-magnet synchronous motor, having vanes which are deformable at least along part of their extension so as to change their curvature, when loaded, in one direction of rotation, so that the po... | 01/24/2006 |
| 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 |
| 6966755 | Compressor airfoils with movable tips Aspects of the invention relate to a compressor system for a turbine engine that not only allows for larger compressor blade tip clearances as the engine passes through non-standard operating conditions, but also minimizes clearances during normal engine operation, ... | 11/22/2005 |
| 6948905 | Horizontal wind generator A horizontal wind generator comprises a horizontal windmill drivingly coupled to an electrical generator. The windmill includes a vertical drive shaft mounted for rotation in a base, with a plurality of wind drive units being mounted in wind catching positions at sp... | 09/27/2005 |
| 6926500 | Fluid inertia drag damper for rotary wing aircraft rotor A drag damper for use on a rotary-wing aircraft rotor comprises a body defining two variable volume chambers linked by a piston. The chambers filled with fluid in the damper are connected by a restrictor port in the piston or between the latter and the body, and via... | 08/09/2005 |
| 6923615 | Wind driven power generator A wind driven power generator is designed for mobile applications and locates the generator in a power housing at the base of the unit on an adjustable mounting arrangement. A lightweight high strength hollow column is supported in the power housing and supports a w... | 08/02/2005 |
| 6921249 | Main rotor shear restraint A main rotor shear restraint that includes two spherical ball segments, two corresponding bearing outer races, and a spring system for loading the bearing outer races against the two spherical ball segments. ... | 07/26/2005 |
| 6910865 | Helicopter rotor hub, and rotor featuring such a hub There is described a hub for a helicopter rotor, having a main body, and a number of connecting members projecting from the main body and for the connection of respective blades; the main body and the connecting members being defined by separate components connectab... | 06/28/2005 |
| 6902508 | Helicopter mainshaft assembly and drive assembly including the same A helicopter mainshaft for use with a plurality of planet gear assemblies includes an elongated shaft having first and second opposed ends and a midsection located between the first and second ends. The shaft defines a shaft axis extending through the first and seco... | 06/07/2005 |
| 6883752 | Vibration damper for aircraft engine An internal combustion engine for an aircraft is described. The internal combustion engine includes a crankshaft defining first and second ends, a propeller, and a transmission disposed between the first end of the crankshaft and the propeller, operatively connectin... | 04/26/2005 |
| 6832894 | Combined ball-and-damper device for a helicopter rotor The invention relates to a combined ball-and-damper device for mounting between firstly a flexible spar connecting a helicopter blade to a rotor hub and secondly a torque tube for controlling the pitch of said blade, the device comprising two individual modules each... | 12/21/2004 |
| 6827553 | Flexbeam damper assembly having transition shim clamp device A damper assembly including a spherical elastomer bearing member, wherein the spherical elastomer bearing member is operable for accommodating relative motion and/or vibration, and a flat elastomer bearing member, wherein the flat elastomer bearing member is operabl... | 12/07/2004 |
| 6824348 | Wind rotor operable in slow wind speeds A wind rotor comprises a base, a rotor frame rotationally supported on the base for movement about a substantially vertical axis in one of a clockwise or counter clockwise direction, and a plurality of wind receiving vanes pivotally disposed on the rotor frame for m... | 11/30/2004 |
| 6805948 | Flexbeam A flexbeam (1) having flapping portions (3) and lead-lag and feathering portions (5). Each lead-lag and feathering portion has: a central portion with an elongated and narrow width; middle portions each of which continuously connects to the cent... | 10/19/2004 |
| 6779966 | Horizontal windmill The invention is a system, device and method that captures wind energy and converts it into mechanical or electrical energy. In a system embodiment, the system transfers wind power to rotational energy. The system includes a wind capture means that uses wind to gene... | 08/24/2004 |
| 6695583 | Snubber-vibration damper system for a bearingless main rotor A flexbeam rotor system includes an intermediate tube and a torque tube that envelopes a flexbeam in spaced relation thereto. The torque tube is connected to the flexbeam at its radially outer end and articulately connected to the intermediate tube throug... | 02/24/2004 |
| 6688842 | Vertical axis wind engine A vertical axis wind engine, also referred to as a vertical axis wind turbine (VAWT) includes a support structure, a rotor mounted rotatably on the support structure for rotation about a vertical axis, and at least one airfoil for causing the rotor to rot... | 02/10/2004 |
| 6676074 | Dual piston drag damper for rotary-wing aircraft rotor A drag damper for use on a rotary wing aircraft rotor comprises a body defining two variable volume chambers linked by a piston. The chambers are filled with fluid and are connected by a restriction port (35) and by a channel (32) of larger cross-section ... | 01/13/2004 |
| 6619921 | Driving vane assembly for a windmill A blade assembly for a windmill includes an output shaft with a first cross-shaft and a second cross-shaft operatively mounted relative to the output shaft. The first cross-shaft and the second cross-shaft include a first end and a distal end. A first bla... | 09/16/2003 |
| 6499939 | Water wheel The present invention 10 discloses a wheel-like member 30 consisting of a central circular body member 18 having a plurality of spokes 22 radiating from its outside perimeter that attach to the inside perimeter of an outer circular body member 24. On the ... | 12/31/2002 |
| 6309182 | Helicopter rotor droop stop mechanism A droop stop mechanism is provided for controlling droop of a rotor assembly in both static and dynamic states. The droop stop mechanism includes a U-shaped pendulum having a pair of spaced apart arms interconnected by a stepped base. One end of each of t... | 10/30/2001 |
