Abstract: A contra-rotating propeller system for an aircraft turbine engine, including a free power turbine including a first rotor and a second rotor contra-rotating relative to the first rotor, a first contra-rotating propeller and a second contra-rotating propeller to be rotated about a longitudinal axis of the propeller system relative to a stator of the system, and a mechanical transmission device. The mechanical transmission system is provided between the first propeller and the second propeller.

Abstract: An apparatus for buffering products comprises at least three buffer conveyors arranged in series, which can be driven independently of each other, a first buffer conveyor which can be connected to supply device for supplying products and a last buffer conveyor which can be connected to discharge device for discharging the products, wherein the buffer conveyors are so arranged that each of the products follows the same conveying path and that at least one of the buffer conveyors comprises a spiral path.

Abstract: A sorting apparatus for sorting products comprises an endless conveying element comprising a support surface. The support surface makes an angle with a horizontal plane, at least at the location of the outlets, about an axis parallel to the conveying direction. The sorting apparatus further comprises locking elements arranged one behind the other, as seen in the conveying direction, which move along synchronously with the conveying element and which can be unlocked independently of each other, which locking elements function to hold the products in place on the support surface. Upon activation of a selected unlocking mechanism, a product is moved downwards from the conveying element towards the outlet under the influence of the force of gravity being exerted thereon.

Abstract: A pylon for suspending an engine beneath an aircraft wing, capable of being attached by one end to a casing of the engine and by another end to the wing is disclosed. The pylon includes at least one articulation actuated by a actuator making it possible to change the height position of the engine on the ground and in flight.

Abstract: A suspension of a multi-flow turbojet engine provided with an intermediate casing and an exhaust casing from a pylon that can be attached to the structure of an aircraft is disclosed. The suspension includes a forward attachment device between the hub of the intermediate casing and the pylon, a rear attachment device between the exhaust casing and the pylon, and a connection device rigidly connecting the intermediate casing to the pylon. The rear attachment device includes an actuator for compensating for the variations in diameter of the exhaust casing so as to keep the axis of the exhaust casing coaxial with the axis of the intermediate casing through the various phases of flight of the aircraft.

Abstract: A conveyor for conveying products comprises at least two drivable endless conveyor members for supporting products. The conveyor members extend substantially parallel to each other as seen from above and define a helical path. The conveyor is arranged such that under operating conditions the conveyor members have substantially equal angular speeds.

Abstract: A device for controlling pitch of fan blades of a turboprop including at least one set of adjustable-pitch fan blades secured to rotate with a rotary ring mechanically connected to a turbine rotor, each blade of the set being coupled for pitch adjustment to a synchronization ring. The device includes a rolling bearing including an inner cage slidably mounted on a turbine casing and connected to the rod of an actuator, and an outer cage that is mechanically connected to the synchronization ring by a plurality of connection arms connected to the actuator rod and hinge-mounted on the synchronization ring such that actuating the actuator causes the synchronization ring to move in turning about the longitudinal axis.

Abstract: A device for controlling pitch of fan blades of a turboprop including at least one set of adjustable-pitch fan blades secured to rotate with a rotary ring centered on the longitudinal axis, and mechanically connected to a turbine rotor, each blade of the set being coupled for pitch adjustment to a synchronization ring centered on the longitudinal axis. An actuator is secured to rotate with the turbine rotor and is mechanically connected to the synchronization ring by a plurality of connection arms connected to the actuator rod and hinge-mounted on the synchronization ring such that actuating the actuator causes the synchronization ring to move in turning about the longitudinal axis.

Abstract: A conveyor for conveying products comprises at least a drivable helically-shaped inner track conveyor member and a drivable helically-shaped outer track conveyor member. The outer track conveyor member surrounds the inner track conveyor member. The pitches of the inner track conveyor member and the outer track conveyor member are different.

Abstract: A conveyor is provided for conveying and buffering articles (G) and the like along a vertically extending, substantially helical path. A conveying assembly such as a conveyor belt or conveyor rollers is supported by a frame and driven by a drive unit and extends along said helical path and conveys articles along said path. The substantially helical path is divided into zones (Z), each zone being provided with switch members, in such a manner that the conveyor can be switched in each zone between a conveying position, in which the conveying assembly conveys the articles, and a buffering position, in which the articles present in said zone are stationary. Buffering devices distributed over the length of the conveyor and being present in each zone support the articles in the buffering position.

Abstract: A device including a pair of counter rotating propellers with variable pitch which may be modified by an actuator located in a central cavity of the shafts. A system for transporting energy to the actuator includes a conduit passing into a static case in proximity to an epicycloidal gear train, and then control conduits leading to the actuator and crossing the planet carrier of an epicycloidal gear train. The junction is affected by a dynamic joint with a collector. This transport path avoids a high temperature turbine.

Abstract: A conveyor for buffering products comprises at least first and second drivable curved conveyor parts, which are spaced from each other in horizontal direction. At least, the first conveyor part has at least an inner track and an outer track, wherein the outer track is adjacent to the inner track and disposed at the outside bend side of the inner track. The second conveyor part has at least a second conveyor part track, wherein one end of the outer track of the first conveyor part is coupled to one end of the second conveyor part track. An other end of the second conveyor part track is coupled to one end of the inner track of the first conveyor part. The first and second conveyor parts are at least partly helically-shaped.

Abstract: A buffer conveyor for conveying and buffering products comprises a first elongated conveyor and a second elongated conveyor that can be driven in an opposite direction. The first and the second conveyor extend in a path at least substantially parallel to each other and beside each other. A transfer unit is movable at least substantially parallel to the first and the second conveyor in the aforesaid path and is provided with a transfer device for transferring the products from the first conveyor to the second conveyor. The transfer unit comprises a drive unit for moving the transfer unit, preferably in dependence on the velocities of the first and the second conveyor. The drive unit of the transfer unit comprises a drive motor, which follows the movements of the transfer unit at least in part.

Abstract: A system of contra-rotating propellers for an aircraft turbomachine, including: a free power turbine including a first rotor; first and second propellers; and a mechanical transmission system including a planetary gear train fitted with a sun gear driven by the rotor, at least one planet gear driving the first propeller, and a ring driving the second propeller. The free power turbine also includes a second rotor that is contra-rotating relative to the first rotor, and rotating the ring.

Abstract: A buffer conveyor for conveying and buffering products comprises a first and a second conveyor, which move at least substantially parallel to each other in helical paths about a common vertical axis, albeit in opposite directions. A transfer unit is movable parallel to the first and the second conveyor in the aforesaid path with its inlet (HA) and outlet (HB) ends. The transfer unit is provided with at least one separate, drivable transfer element for transferring the products from the first conveyor to the second conveyor, so that the products can be transferred from the inlet end of the first conveyor to the discharge end of the second conveyor via the transfer unit. The transfer unit comprises a drive unit for moving the transfer unit along the paths of the respective conveyors with its ends in dependence on the speeds of the first and the second conveyor.

Abstract: A device adapted to be fitted with propeller blades includes a first retention ring including over a periphery thereof a plurality of radial bores; and a second retention ring including over a periphery thereof a plurality of radial bores, the first and second retention rings being mounted one on top of the other in the radial direction, each bore in the first retention ring being positioned opposite a bore in the second retention ring, a bore in the first retention ring arranged opposite a bore in the second retention ring forming a bore pair adapted to receive a foot of a blade.

Abstract: An aircraft propulsion system including a bypass turbojet engine surrounded by a nacelle together with a mechanism attaching the engine to a pylon of an aircraft. The nacelle includes an inner structure forming a body of revolution including a rigid framework formed by an upstream annular frame fastened to an intermediate casing of the engine, a downstream annular frame supporting the exhaust casing of the engine, and longitudinal arms connecting the frames together, the annular downstream frame being fastened to the pylon by a flexible or hinged suspension mechanism.

Abstract: A conveyor for conveying piece goods or the like through a helical path around a central axis in a vertical direction includes a frame which supports an endless conveyor belt that is movable along the helical path in a conveying direction. The conveyor belt includes carrier plates which are movably connected to each other. The frame includes at least a guide and at least a number of carrier plates comprise at least a guide roller rotatable about an axis of rotation. The guide roller has at least a first guide roller surface which is in contact with the guide in a first contact location, and a second guide roller surface which is in contact with the guide in a second contact location. The first and second contact locations are spaced from each other and the normal to the first guide roller surface in the first contact location deviates from the normal to the second guide roller surface in the second contact location.

Abstract: A conveying apparatus comprises a first conveyor for conveying products in a first conveying direction, which first conveyor comprises a first supply location, where a first series of products are supplied to the first conveyor via a first supply station, a second conveyor for conveying products in a second conveying direction, which second conveyor comprises a second supply location, where a second series of products are supplied to the second conveyor via a second supply station. The conveying apparatus further comprises a channelling element for channelling at least one product out from the second conveyor, and a channelling conveyor for conveying a channelled-out product from said channelling element.

Abstract: A sorting apparatus for sorting products comprises an endless conveying element comprising a support surface. The support surface makes an angle with a horizontal plane, at least at the location of the outlets, about an axis parallel to the conveying direction. The sorting apparatus further comprises locking elements arranged one behind the other, as seen in the conveying direction, which move along synchronously with the conveying element and which can be unlocked independently of each other, which locking elements function to hold the products in place on the support surface. Upon activation of a selected unlocking mechanism, a product is moved downwards from the conveying element towards the outlet under the influence of the force of gravity being exerted thereon.