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| Number | Title | Issue Date |
| 7350745 | Apparatuses and methods for applying forces to a structure utilizing oscillatory wing motions in a fluid Methods and apparatuses are disclosed that rotate a first member about a first point relative to a chassis, wherein the first member is rotatably coupled to a second member at a second point. A second member is counter-rotated at a ratio of the rotational speed of t... | 04/01/2008 |
| 7237751 | Helicopter rotor and method of repairing same An aerofoil, particularly a helicopter main rotor blade has a leading edge protector comprising a strip of resilient polymer, preferably polyurethane, adhered to the leading edge of the flex section of the blade. ... | 07/03/2007 |
| 7182325 | Compliant spacer A compliant spacer which, in use, is located between planar surfaces of two machine elements which are, in use, clamped together in an assembly, the spacer having a first generally planar face and a second oppositely facing generally planar face which is generally p... | 02/27/2007 |
| 7047596 | Structural bushing application for highly loaded composites lugs A composite lug assembly includes a composite lug defining a loaded side and an unloaded side and having at least one hole extending therebetween, a shoulder bushing assembly including a first side bushing having a first cylindrical portion adapted to fit in the hol... | 05/23/2006 |
| 7045702 | Solar-paneled windmill A solar-paneled windmill is provided having aerodynamic fan blades provided with solar panels. The windmill produces electricity using wind energy and solar energy. In another embodiment, magnets are provided to the solar-paneled windmill fan blades to generate magn... | 05/16/2006 |
| 7021897 | Blade pitch control disk device for a rotorcraft rotor A cyclic swashplate device for controlling rotorcraft blade pitch is disclosed for application to rotorcraft swashplates, in particular, in helicopters. A cyclic swashplate device controls the rotorcraft blade pitch. The device (10′), with rotating (10 | 04/04/2006 |
| 6960112 | Airfoil blade with cushioned edge for powered toy aircraft An airfoil blade in a powered toy aircraft has a body with a cushioned edge. The body has a first end adjoining a hub, a second opposing end, a forward edge, and an opposing trailing edge. The cushioned leading edge is attached mechanically to the body and extends a... | 11/01/2005 |
| 6942394 | Bearing race support without distortion A race for a bearing, which is mountable to a mount, has an annular bearing surface with a center axis defining an axis of rotation for the bearing and mutually perpendicular radial and transverse directions relative thereto. The race also has a radial wall that is ... | 09/13/2005 |
| 6908286 | Main rotor shaft mounted hydraulic pressure system A rotor system includes a hydraulic pressure system located within a rotor shaft along an axis or rotation. The hydraulic pressure system is within the rotating field such that fluid pressure is generated and supplied from within the rotational field without the nee... | 06/21/2005 |
| 6666649 | Helicopter individual blade control system In an individual rotor blade control device for a helicopter main rotor with a rotor shaft that can be driven by a main drive, with an even number of rotor blades that are arranged on the periphery of a rotor hub, with primary control mechanisms for colle... | 12/23/2003 |
| 6616095 | Coupled aircraft rotor system The subject tiltrotor aircraft has three modes of operation: airplane mode, helicopter mode, and transition mode. A tilting mast, which transitions the aircraft between airplane mode and helicopter mode, is controlled by systems that allow selective movem... | 09/09/2003 |
| 6533549 | Helicopter A helicopter with rotor blades rotatably connected to a rotor head. The rotor head is non-rotatably connected with a rotor mast (1) pivoted in a transmission housing and driven by a transmission via at least one driving mechanism. A pitch of the rotor bla... | 03/18/2003 |
| 6481968 | Rotor mast of a helicopter The invention is based on a helicopter having the following features: one rotor head (1) is non-rotatably connected with a rotor mast (3) which is rotatably mounted in a housing (5) of a transmission (6); one or more driving mechanisms actuate the rotor mast (3) vi... | 11/19/2002 |
| 6461212 | Automatic start control and clutch of toy engine powered by high pressure gas A starting device of a toy engine comprises a spring, a starting piece, and a unidirectional bevel gear. The motion of the spring between the two fulcrums serves to ensure that the control rod is kept securely in place at a disengaging position and an eng... | 10/08/2002 |
| 6325326 | Cyclic and collective pitch control device for a helicopter rotor A cyclic and collective pitch control device for a helicopter rotor, fitted about a fixed casing having an axis, and having a substantially sleeve-shaped movable element fitted in axially-sliding manner to the casing; a rocking-plate assembly fitted coaxi... | 12/04/2001 |
| 6280141 | Swash-plates system for control of the pitch of rotor blades with rotating plate driver The rotating plate of the system is fixed in rotation with the rotor by a driver with two rigid driving tracks extending axially and diametrically opposite in being fixed in rotation with the rotor. Each track engages with one of two driving fingers fixed... | 08/28/2001 |
| 6152696 | Swash-plate device for controlling the pitch of rotor blades with non-rotating plate articulated on a central ball joint The swash-plates are oscillating mounted by the non-rotating plate on a central ball joint sliding axially around a guide fixed to the structure and on which the ball joint is locked from rotation by internal splines engaging with external splines of the ... | 11/28/2000 |
| 6149386 | Swash-plate device for controlling the pitch of rotor blades with non-rotating plate articulated by cotters on a central ball joint The swash-plates are oscillating mounted by the non-rotating plate on a central ball joint sliding axially around a guide fixed to the structure and on which the ball joint is locked from rotation by internal splines engaging external splines of the guide... | 11/21/2000 |
| 6109876 | Helicopter swash plate with integrated pump In a helicopter with the rotor blades controlled by a swash plate with a stationary part (11) and a rotary part (9) and hydraulic adjusters (4) in a stationary part of the helicopter or in a rotating system, it is proposed to fit a pump, especially a mult... | 08/29/2000 |
| 6102659 | Swash-plate device for controlling the pitch of rotor blades with cylindrical runners sliding on non-rotating pillars The rotating and non-rotating swash-plates are guided in axial translation and in tilting on the rotor axis by two non-rotating pillars and slides provided with runners with a cylindrical external face permanently tangentially engaged and sliding against ... | 08/15/2000 |
| 6099254 | Helicopter rotor blade control device In a helicopter having three or more rotor blades, and with mechanical actuation of the rotor blades by a swash plate and a superimposed electrohydraulic active control system, in addition to three regulating units (18) is an actuator (4) between a rotata... | 08/08/2000 |
| 6074168 | Swash-plate device for controlling the pitch of the blades of a rotor with rotary guided parts on slides translated along the rotor axis The rotating and non-rotating swash-plates are guided in axial translation and in tilting on the rotor axis by a non-rotating axial guide arrangement, such as two pillars, and slides on each of which slides one of two pads carrying diametrically opposite ... | 06/13/2000 |
| 6033182 | Swash-plate device for controlling the pitch of rotor blades with non rotating plate stop track and pin The non-rotating plate of the device is stopped from rotating around the rotor axis by a stop arm with at least one rigid stop track extending substantially axially and secured to the structure of the rotor aircraft. The track works together with a stop p... | 03/07/2000 |
| 5993157 | Cycloidal propeller having wings operated by hydraulic clutches A cycloidal propeller to achieve strictly a rudder operation includes accessory apparatuses containing accessory drives. Clutches are used to couple the accessory drives to the propeller shafts, and additional clutches are provided to disengage the fixed ... | 11/30/1999 |
| 5931639 | Helicopter blade assembly adapted to permit rapid forward flight A helicopter blade assembly for permitting rapid forward flight in a helicopter having separate means for providing a forward impetus. The assembly has a set of rotatable blades attached to a substantially vertical mast. These blades slope downward near t... | 08/03/1999 |
| 5906476 | Main rotor system for helicopters A swashplate is provided for use in helicopters having a vertical main rotor axis. The swashplate includes a bearing, a first race member including a channel, a second race member including a channel, and a third race member including a channel. The chann... | 05/25/1999 |
| 5897293 | Counterweighted propeller control system A system for controlling functions of a propeller having a plurality of blades is disclosed. The system comprises an electronic control for controlling the functions of the propeller. A plurality of backup devices are provided for backing up the electroni... | 04/27/1999 |
| 5826822 | System and method for providing cyclic and collective pitch control in a rotary wing aircraft A cyclic and collective control system is provided for controlling rotor pitch in a rotary wing aircraft. The rotor blades are pivotally mounted on a hollow, spinning shaft. An angularly and vertically displaceable control shaft is mounted with the spinni... | 10/27/1998 |
| 5810562 | Composite rotating swashplate for a helicopter rotor system A composite rotating swashplate for a helicopter rotor system which includes rotor blades with associated control rods. The control rods control the pitch of the rotor blades. The composite rotating swashplate according to the present invention includes a... | 09/22/1998 |
| 5799901 | Rotor blade swashplate-axis rotation and gyroscopic moments compensator An apparatus for compensating for spatial phase angle phase errors in the flapping angle oscillations of a rotor blade is disclosed. The apparatus receives a measured aircraft roll and a measured aircraft pitch. Gyroscopic moments resulting from these mea... | 09/01/1998 |
| 5785497 | Control rod mounting arrangement for helicopter swashplates A mounting arrangement (60) for coupling a control rod (38) to a stationary swashplate member (32) of a helicopter swashplate assembly (30) wherein the mounting arrangement (60) is characterized by a specially configured stationary swashplate member (32) ... | 07/28/1998 |
| 5727926 | Pitch link for rotary wing aircraft and automatic adjuster thereof A pitch link having an adjustable length is constructed as a diamond-shaped frame by coupling and fixing four flexible beams at end portions thereof. Spherical bearings are provided on opposite ends of the structure. A turnbuckle shaft is screwed into ver... | 03/17/1998 |
| 5678786 | Reconfigurable helicopter flight control system A failure of any one of three swashplate actuators of a helicopter rotor blade is detected. Once such a detection is made, the position of this nonfunctional swashplate is locked and measured. The inputted commanded swashplate collective position, command... | 10/21/1997 |
| 5655878 | Higher harmonic control apparatus for a helicopter rotor A control system has an HHC actuator having a basal portion and a movable portion. A load acting on the control system is detected by a semiconductor gauge. The load detected by the semiconductor gauge is compared with a threshold value in a computer. If ... | 08/12/1997 |
| 5628620 | Main rotor system for helicopters A main rotor is provided for use in a rotary winged model aircraft. The main rotor includes a rotor hub assembly rotatable about a vertical axis and at least two main rotor blades. Each of the main rotor blades extends in a radial direction from the rotor... | 05/13/1997 |
| 5624232 | Device for controlling the pitch of the blades of a rotorcraft rotor The device comprises, in addition to the conventional non-rotating plate and rotating plate of a swashplates device, a secondary rotating plate which can move in translation with the non-rotating plate but which cannot be inclined, and, for each blade, an... | 04/29/1997 |
| 5599167 | Device for controlling the pitch of the blades of a rotorcraft rotor The device for controlling the pitch of the blades of a rotor using a mechanism having swashplates includes an auxiliary plate mounted on the non-rotating plate of the mechanism and which is secured in terms of rotation to the rotating plate of this mecha... | 02/04/1997 |
| 5562415 | Pitch-control devices for hingeless rotors For each blade, the cuff which is rigid in torsion, surrounding the corresponding rotor attachment twistable arm, bears two opposed pitch levers each articulated to one respectively of two intermediate connecting rods which are moreover articulated to one... | 10/08/1996 |
| 5405104 | Stopped rotor aircraft utilizing a flipped airfoil X-wing This invention is directed to stopped rotor Flipped Airfoil X-wing (FAX-WING™) aircraft which comprises: (a) A rotary wing flight mode which operates similar to a helicopter, wherein all main rotor airfoils rotate with leading edges into the ... | 04/11/1995 |
| 5310315 | Low-vulnerability device for the control of helicopter rotor by cyclic plates The invention relates to a low-vulnerability device for the operation of a lifting and propulsing helicopter rotor by means of a cyclic plate mechanism, in which the non-rotating plate (5) is coupled at four points (1, 2, 3, 4) to four hydraulic actioning... | 05/10/1994 |
