Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7992392 | Method for regulating the flow rate of fuel to a turboshaft engine in acceleration or in deceleration Apparatus for regulating the flow rate of fuel to a turboshaft engine in acceleration or in deceleration, the engine having a free turbine and a core engine, the apparatus comprising sensors transmitting information to regulator means, said information relating: to ... | 08/09/2011 |
| 7984873 | Retraction cylinder and rotorcraft undercarriage furnished with such a retraction cylinder A retraction cylinder (20) makes it possible to retract a leg (10) of a rotorcraft landing gear, the retraction cylinder (20) comprising a retraction chamber (33) and an extension chamber (34) separated by a head (26) of a p... | 07/26/2011 |
| 7959105 | Aircraft provided with a silent shrouded rotor An aircraft has a streamlined structure (10) pierced by an air flow duct (20) having an axis of symmetry (AX) contained in a plane of symmetry (P) perpendicular to a longitudinal axis (AL) of the aircraft, the aircraft possessing a shrouded rotor (1... | 06/14/2011 |
| 7949439 | Method and a system for diagnosing an aircraft from measurements performed on the aircraft A method of diagnosing an aircraft by analyzing at least one spectrum obtained from measurements taken on the aircraft, in particular from vibration measurements, in which the spectrum (spectra) to be analyzed is/are input to a calculation module (23) togethe... | 05/24/2011 |
| 7946536 | Device for interconnecting first and second control sticks of an aircraft in roll and in pitch The present invention relates to a device for interconnecting first and second control sticks (1, 2) for controlling an aircraft in roll and in pitch, the device comprising a pitch interlinking shaft (20) and roll interlinking means (10) respect... | 05/24/2011 |
| 6712313 | Constant velocity drive rotary-wing aircraft rotor with torque splitting differential A constant velocity drive mechanism of a rotary-wing aircraft rotor, comprises a torque splitting differential mechanism, comprising a driving disc integral in rotation with a rotor mast and connected to each of two driven discs either side of the driving disc, by a... | 03/30/2004 |
| 6578265 | Method of hot peeling for removing a blade leading edge cap In order to remove a plate made from a material that can be heated by electromagnetic induction and retained on a supporting member by a heat-fusible adhesive, an inductor is displaced facing at least one strip of the plate in order to heat the strip by i... | 06/17/2003 |
| 6494680 | Rotor with rotor head vibration suppressor comprising vertical pendulums The rotor comprises a pendular vibration suppressor with at least two pendulums each having at least one pendular body connected by at least one rigid arm to a support that rotates as one with the rotor hub, and on which the pendulum oscillates via a pivo... | 12/17/2002 |
| 6470544 | Hot Peeling device for a blade leading edge cap In order to remove a plate made from a material that can be heated by electromagnetic induction and retained on a supporting member by a heat-fusible adhesive, an inductor is displaced facing at least one strip of the plate in order to heat the strip by i... | 10/29/2002 |
| 6447249 | Rotocraft rotor with folding blades and deicing electrical connection installation On the folding-blade rotor, an outer radial length of an electric cable for connection between the hub and a blade has a part forming spare length and wound into an S-shape around two reels each mounted at the end of one of the two blade pins that connect... | 09/10/2002 |
| 6338455 | Heating device with resistive elements for an aerodynamic profile This concerns a heating device for an aerodynamic profile (10) including, incorporated into the aerodynamic profile near the leading edge (6) of the aerodynamic profile, several resistive elements forming a first set (18) of resistive elements (14,15) run... | 01/15/2002 |
| 6325327 | Anti-vibration suspension device with torsion springs between vibrators and structure, for a helicopter The anti-vibration suspension device comprises at least three oblique bars pivotably mounted each on the gearbox and on the structure, by means of a rigid lever supporting a vibrating weight and in turn pivotably mounted on this structure, and each lever ... | 12/04/2001 |
| 6308918 | Window release system The invention is relative to a window frame, in particular a window for a helicopter intended to fix the window onto a support. This frame includes cutting out means driven by pulling on at least a part of the window perimeter in order to divide into two ... | 10/30/2001 |
| 6283408 | Anti-vibration suspension device having a torsion spring, for a helicopter The anti-vibration suspension device comprises at least three oblique bars, each articulated on the gearbox and on the structure by means of a rigid lever supporting an oscillating weight and in turn pivotally mounted by means of at least one pivot on thi... | 09/04/2001 |
| 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 |
| 6276633 | Convertible aircraft with tilting rotors The convertible aircraft with tilting rotors comprises two fixed wings with zero sweep on which an inter-connecting shaft is substantially rectilinear and parallel with the pivot axis but offset from this axis, substantially perpendicular to a longitudina... | 08/21/2001 |
| 6260793 | Convertible aircraft with tilting rotors To provide aerodynamic continuity between the front part, pivoting with the rotor, and the stationary rear part of a pod housing an engine for driving the rotor, a curved cowl curved about the pivot axis extends the rear edge of the bottom cowling of the ... | 07/17/2001 |
| 6227805 | Composite material variable pitch blade for helicopter rotor and manufacturing process of such a blade It concerns the making of a composite material blade according to the RTM process in which the casing cover, the spars and the anchoring reinforcements of the blade are respectively constituted from at least one fabric cut-out which includes at least two ... | 05/08/2001 |
| 6219597 | Process and device for aiding the maintenance of a complex system, especially an aircraft The present invention relates to a device and a process for aiding the maintenance of a complex system, especially an aircraft. According to the invention, said device comprises units for determining and recording, iteratively, during the operation of the comp... | 04/17/2001 |
| 6216979 | De-icing connection systems for rotor aircraft rotor The system connects a power supply conductor to an electrical de-icing device of a blade by at least one cable with a first section connected to the power supply conductor by a connector and to a second section with an aerial brace in a flattened half-loo... | 04/17/2001 |
| 6203277 | Gyroplane rotor with double-plate hub and external pitch control A rotorcraft, in particular helicopter, rotor includes a tubular pylon driven in rotation about its axis, which is the rotation axis of the rotor, from its foot. A hub is attached to the pylon by a flared base and includes two annular plates substantially... | 03/20/2001 |
| 6196066 | Rotor aircraft rotor blade with static and dynamic balancing device and balancing process of a blade The balancing device includes static weights, equally distributed by mass in two housings elongated along the span of the blade, and dynamic weights distributed by mass in the two housings so as to ensure the dynamic adjustment of the blade while keeping ... | 03/06/2001 |
| 6164915 | Simplified anti-vibration suspension device for a helicopter The anti-vibration suspension device includes at least three diagonal bars each articulated on the transmission box and on the structure by a rigid lever supporting a damping weight itself articulated to at least pivot on this structure, and, for each dia... | 12/26/2000 |
| 6155520 | Bracket hinged panel The present invention is relative to a panel hinged on a receiving part, along at least one curved contour edge, by means of two hinges which define a geometric axis of rotation around which the panel pivots between an open position and a closed position.... | 12/05/2000 |
| 6155062 | Method of operating an air-conditioning installation of a helicopter cabin or cockpit A mode of operation of an air-conditioning installation of a compression cycle type helicopter cabin or cockpit air-conditioning installation is characterized in that it includes a start-up sequence controlled by an inverter controlling the motor-compress... | 12/05/2000 |
| 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 |
| 6152692 | Rotor blade with swivelling air flow control flap The blade includes at least one trailing edge swivelling air flow control flap, swivelling on the blade around an axis directed substantially along the span of the blade and the control flap, the swivelling of the control flap being controlled by an actua... | 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 |
| 6145785 | Simplified anti-vibration suspension device with top dampers for a helicopter The anti-vibration suspension device includes at least three diagonal bars each articulated on the structure and on the transmission box by means of a rigid lever supporting a damping weight and itself articulated at least by pivoting on this box, and, fo... | 11/14/2000 |
| 6140720 | Device for thermally protecting elastomeric components, system of such devices for the protection of a rotorcraft rotor in cold weather, and rotorcraft rotor equipped with such a system The thermal protection device comprises, for at least one elastomeric component of a rotor, at least one element which is fitted onto the rotor so as to reduce heat exchange between the elastomeric component and the ambient air. The element may be thermal... | 10/31/2000 |
| 6126114 | Door for aircraft, particularly for helicopter, with interconnected movements of upper and lower leaves A door is provided for an aircraft. The aircraft includes a cabin having a floor and a roof. The door includes an upper and lower leaves hinged along axes approximately parallel to a longitudinal axis (X--X) of the aircraft. The leaves can swing between a... | 10/03/2000 |
| 6120251 | Rotorcraft rotor with fixed flap stops on blades and hub, and with determined pitch-flap law The rotor comprises, for each blade, an inner and an outer flap stop which are fixed to the blade and have a bearing surface which is planar with a cylindrical portion, facing an inner and an outer flap stop fixed to the hub and with torus-shaped bearing ... | 09/19/2000 |
| 6113352 | Hingeless rotor with precompressed half-bearings supporting blade root oversleeves on torsionable blade root strips Each blade of the rotor has a rigid root oversleeve connected to a torsionable and flexible root strip by two laminated, spherical support half bearings, fixed by their outer frame with double rigid horns the lateral ends of which facing each other on eac... | 09/05/2000 |
| 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 |
| 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 |
| 6036442 | Device for folding of a helicopter rotor blade The device comprises a detachable distance-piece (19') with a pivot (20) retained in a pivoting way in the yoke (7b) of a member (7) connecting a blade (4) to the hub, by one of the two blade pins (15) and a distance-piece yoke (22') in which the blade ro... | 03/14/2000 |
| 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 |
| 6032899 | Blade pitch locking device for a main rotor of a rotary-wing aircraft The present invention relates to a device for locking the pitch of the blades of a main rotor of a rotary-wing aircraft in which each blade is firstly rotated about an axis of rotation of the rotor by a rotor mast and is secondly constrained to pivot abou... | 03/07/2000 |
| 6027073 | Window release system The invention is relative to a window frame, in particular a window for a helicopter intended to fix the window onto a support. This frame includes cutting out means driven by pulling on at least a part of the window perimeter in order to divide into two ... | 02/22/2000 |
| 6021580 | Instrument for measuring the clearance between two components The instrument comprises two rigid yokes 1 and 2 capable of sliding one with respect to the other in the direction of the clearances to be measured between two components (R, 5) and 8. First of all, using an operating member 3, enough force to bring the b... | 02/08/2000 |
