Class 244/7R - Convertible

Subclass of Class 244 - Aeronautics and astronautics
Definition: Aeronautical machines , which may be altered so that the
No. of patents: 118
Last issue date: 04/24/2012

«First «Previous 1 2 3 Next»Last»

Number	Title	Issue Date
5839691	Vertical takeoff and landing aircraft A vertical takeoff and landing aircraft has a fuselage with a wing located above the fuselage at the rearward end and with a horizontal stabilizer located at the forward end. The propellers are mounted on booms separate from the wings and located just beh...	11/24/1998
5823470	Split torque proprotor transmission A conversion access gearset includes a first bevel gear, which is connected to a wing cross shaft leading from the proprotor drive train path to the second turbine engine. A second bevel gear is connected to a main transmission input shaft, which is adapt...	10/20/1998
5709357	Tiltrotor helicopter The invention relates to a tiltrotor helicopter comprising a fuselage (1), a wing arrangement (2) and at least one power plant (5), and including two contrarotating, cyclically controllable rotors (7, 8) which are spaced from one another in the longitudin...	01/20/1998
5395073	STOL/VTOL free wing aircraft with articulated tail boom A VTOL/STOL free wing aircraft includes a free wing having wings on opposite sides of a fuselage connected to one another respectively adjacent fixed wing inboard or center root sections fixedly attached to the fuselage for free rotation about a spanwise ...	03/07/1995
5388785	Single-rotor helicopter having a compound anti-torque system, and a method of countering the torque induced by said single rotor A helicopter comprising: a single main rotor for forwards motion and for support; and an anti-torque system comprising: an auxiliary, anti-torque rotor rotated from the engine means of said main rotor and exerting controllable anti-torque lateral thrust; ...	02/14/1995
5337974	Wing pivot structure An aircraft wing pivot structure is described which provides a flexible ring attached to the aircraft wing at flexible wing attachment points by spherical bearings. The ring is attached to the fuselage of the aircraft by pins fixed to the fuselage and fit...	08/16/1994
5330131	Engines-only flight control system A backup flight control system for controlling the flightpath of a multi-engine airplane using the main drive engines. The backup flight control system comprises an input device for generating a control command indicative of a desired flightpath, a feedba...	07/19/1994
5289994	Equipment carrying remote controlled aircraft It works like a helicopter in vertical flight or like an airplane in horizontal flight, being able to land accurately on a small area. It is equipped with a rotor, a couple of wings fitted with ailerons and other control surfaces actuated differentially, ...	03/01/1994
5271295	Mechanism for transmitting power between a driving shaft and two assemblies to be driven To ensure the power transmission between a driving shaft (42) and two assemblies to be driven, such as the rotor or rotors and the ancillary systems of a gyroplane, a mechanism is proposed, which has a connection shaft (48) constantly engaged on the drivi...	12/21/1993
5246188	Wing turbines in conjuction with propulsion systems for aircraft and helicopters An aircraft may have vertical take-off and landing capability including a power-generating mechanism, a propulsion-developing mechanism, and laterally extending wings. Each wing includes an aerodynamically composite airfoil having a lower camber possessin...	09/21/1993
5209429	Helicopter with retractable rotor for transport A helicopter with a retractable rotor for transport wherein the rotor and its blades, the swashplate, the pitch change rods and support mast are lowered or raised in unison by the hydraulic flight control servos as commanded by the helicopter computerized...	05/11/1993
5203520	Helicar A helicar is provided which consists of a body being in the shape of an automobile, a plurality of wheels depending from the body for supporting the body on the ground, a top rotor assembly operatively secured to the body, a rear rotor assembly operativel...	04/20/1993
5174523	Compound helicopter with engine shaft power output control A compound helicopter includes a main sustaining rotor for hover and low speed flight, a propeller for providing propulsion in high speed flight and an engine. Engine output power is controlled so as to ensure efficient use of available power in both mode...	12/29/1992
5149013	Retractable helicopter rotor A retractable helicopter rotor in which the rotor and its blades, the swashplate and the pitch change rods are retracted and extended as a unit during the helicopter rotor retraction/extension mode of operation, wherein the connection between the rotor su...	09/22/1992
5085315	Wide-range blade pitch control for a folding rotor A blade pitch control system for a rotary wing aircraft which incorporates a mast and rotor which is pivotally adapted for movement of the mast between a generally horizontal stored position and a vertical position for operation in a helicopter mode. The ...	02/04/1992
5067668	Compound helicopter with no tail rotor This helicopter invention uniquely has no anti-torque tail rotor. The tail propeller is used only for forward thrust during the airplane mode of flight and during the transition from vertical helicopter flight to forward airplane mode of flight, when the ...	11/26/1991
5054716	Drive system for tiltrotor aircraft A drive system for a tiltrotor aircraft that provides for the operation of both proprotors by either engine or by both engines. The drive system provides an interconnecting drive shaft that extends between and connects the engines in such a manner that po...	10/08/1991
5046684	Airplane with braced wings and pivoting propulsion devices Conventional cantilever wings of a tiltrotor aircraft are replaced by a joined-wing configuration that eliminates some major speed-limiting constraints of prior tiltrotor configurations--thereby allowing operation into the intermediate speed range of roug...	09/10/1991
5031858	Apparatus and method for folding and locking rotor blades Folding and folding locking apparatus for rotor blades that includes a power actuator for rotating the blades and locking means for securing the blade in the deployed position and securing the blades against rotation of the pitch angle during and when the...	07/16/1991
4982914	Aircraft with a plurality of propellers, a pipe structure for thereon holdable wings, for vertical take off and landing An aircraft has a pair of wing portions with propellers of a propeller pair which are driven and synchronized by a fluid transmission between the power plant and the propellers. A fluid line structure keeps most components of the craft together and consis...	01/08/1991
4979698	Rotor system for winged aircraft A rotor system for a rotor convertible fixed winged aircraft comprising a rotatable rotor shaft mounted on one of the wings of the aircraft, the shaft tiltable between a substantially vertical position and a substantially horizontal position, a rotor moun...	12/25/1990
4923144	Aircraft with pivotable wing and arrestable propellers The invention provides an aircraft with propellers with vertical and horizontal axes in combination with pivotable wing portions. At vertical take off and landing the propellers with vertical axes bear the craft while the wing portions are set with their ...	05/08/1990
4793572	Vertical launch and hovering space shuttle The invention concerns the forming of vertical thrust by rotor blades and their subsequent stopping to act as wings, by changing the angle of of attack of the individual stationary blades during foward flight. The horizontal movement of each blade is inde...	12/27/1988
4771967	Rotor aircraft A rotorcraft is provided with laterally placed dual rotors which rotate in opposite directions with the axis through the center of the rotors being transverse to the longitudinal axis of the aircraft's fuselage. Between the two rotor hubs a wing structure...	09/20/1988
4730795	Heliplane The basic characteristics of an airplane and of a helicopter are combined into one flying craft: a HELIPLANE. This aircraft can fly forward like an airplane and hover like a helicopter. In the hovering mode, the craft lifting force is generated by gyratin...	03/15/1988
4711415	X-wing helicopter-scout attack configuration The present invention provides a single seat aircraft having the capabilities of vertical takeoff, landing and hovering operations utilizing the X-Wing as a conventional helicopter rotating wing. After transition to forward flight following takeoff, the r...	12/08/1987
4691878	Tilt-rotor wing fold mechanism and method A mechanism and method for folding the wing of a tilt-rotor aircraft, hav a rotatable load bearing member cooperatively disposed between a high point of the fuselage and the tilt-rotor wing, and a plurality of locking, load bearing pin joints disposed be...	09/08/1987
4688743	Aircraft with a retractable variable pitch propeller or a fluid motor driven multi propeller aircraft An aircraft has a pair of wing portions with propellers of a propeller pair which are driven and synchronized by a fluid transmission between the power plant and the propellers. A fluid line structure keeps most components of the craft together and consis...	08/25/1987
4504029	Fluid motor driven multi propeller aircraft An aircraft has a pair of wing portions with propellers of a propeller pair which are driven and synchronized by a fluid transmission between the power plant and the propellers. A fluid line structure keeps most components of the craft together and consis...	03/12/1985
4261533	All-axis control of aircraft in ultra deep stall Tilting the stabilizer at an extreme angle to the fuselage, with leading edge down, and controlling and varying engine thrust comprise a method for all-axis control of a generally conventional aircraft in ultra deep stall. The method is effective in recov...	04/14/1981
4142697	Mechanism for synchronously varying diameter of a plurality of rotors and for limiting the diameters thereof A plurality of variable diameter rotors with mechanism for varying the diameter of the rotors synchronously, and including mechanism to limit the diameter of the rotors....	03/06/1979
4127244	Rotary wing aircraft mast arrangement A universally flexible rotor mast for a rotary wing aircraft wherein the universal flexing of the mast is accomplished by the use of multiple elastomer mounts of elastomer metal plate sandwich formation and with high strength cables embedded in the elasto...	11/28/1978
4109885	Vertical take-off and landing aircraft A vertical take-off and landing aircraft features an improved tail-lifting rotor and rotor directional controls. A new type of suction pressure jet-mechanical-flap rotor blade with a higher coefficient of lift is employed. The aircraft has a mechanism for...	08/29/1978
4099687	All-axis control of aircraft in deep stall Tilting the stabilizer at an extreme angle to the fuselage, with leading edge down, and varying engine thrust comprise a method for all-axis control of a generally conventional aircraft in deep stall. In an alternative embodiment, tilting the engines upwa...	07/11/1978
4088284	Phasing control for convertiplane A convertiplane having control apparatus for modification of the control signals during the course of transition in either direction between a helicopter mode and the aircraft mode. The convertiplane has at least one pylon rotatable about a lateral axis, ...	05/09/1978
4059247	Convertiblade An aircraft which operates between the surface and the air as a rotating wing aircraft (helicopter-autogiro). When airborne a rotor pylon latch is released and the pilot flies the rotor system aft about its pivot to the fuselage to form the tail of a high...	11/22/1977
4044971	High speed, long range turbo-jet aircraft An aircraft forwardly propelled by a power plant including a pair of jet engines, is operated in a VTOL mode by powered rotation of a rotary wing mechanically rotoring the engines. When unloaded during fixed wing flight, the power plant is operated in an ...	08/30/1977
3995793	Roto-wing jet airplane A jet aircraft is equipped with powered helicopter type rotor blades and control mechanisms whereby it can take off and land vertically, yet in horizontal flight can operate at speeds and altitudes typical of jet aircraft. The rotor blades are foldably re...	12/07/1976

«First «Previous 1 2 3 Next»Last»

PatentStorm

Quotables

PatentStorm News

Class 244/7R - Convertible