Abstract: A wheel drive system for ground movement of an aircraft includes a motor system and a clutch system. The motor system, which is borne by an unsuspended part of a landing gear strut of the aircraft, includes an electric motor and a reduction gearing system. The clutch system, which connects an output shaft of the electric motor to a wheel of the aircraft via the reduction gearing system, includes a dog-clutch and a translational movement system. The dog-clutch includes a drive part, which is secured to the motor system, and a receiving part, which secures to a rim of the wheel. The translational movement system moves the drive part along an axis of an axle crossbeam of the landing gear strut into an engaged position, in which the drive part collaborates with the receiving part, and a disengaged position, in which the drive part is separated from the receiving part.

Abstract: A wheel drive system for ground movement of an aircraft includes a motor system and a clutch system. The motor system, which is borne by an unsuspended part of a landing gear strut of the aircraft, includes an electric motor and a reduction gearing system. The clutch system, which connects an output shaft of the electric motor to a wheel of the aircraft via the reduction gearing system, includes a dog-clutch and a translational movement system. The dog-clutch includes a drive part, which is secured to the motor system, and a receiving part, which secures to a tire of the wheel. The translational movement system moves the drive part along an axis of an axle crossbeam of the landing gear strut into an engaged position, in which the drive part collaborates with the receiving part, and a disengaged position, in which the drive part is separated from the receiving part.

Abstract: A wheel motorization system, useable for an aircraft to run along a ground surface, includes an electric motor, a driving member securable with a hub of a wheel of the aircraft, and a clutch device connecting an output shaft of the motor to the driving member via a reduction device. The clutch device includes a freewheel device, which allows transmission of a rotational torque only in a first torque transmission direction when the aircraft is travelling forwards.

Abstract: Wheel drive system, particularly for the ground circulation of an aircraft comprising a motor unit (22) borne by an unsuspended part (14b) of a landing gear strut (14) of the aircraft and comprising an electric motor (26) and reduction means, and a clutch device (24) connecting the output shaft (26a) of the electric motor (26) to the wheel (12) via the reduction means. The clutch device (24) comprises a dog-clutch mechanism (32, 34) comprising a drive part (32) secured to the motor unit (22) and a receiving part (34) secured to the tire (12a) of the wheel (12), and a system for the translational movement, along the axis of the axle crossbeam (20) of the landing gear strut (14), of the drive part (32) into an engaged position in which the drive part (32) collaborates with the receiving part (34) and a disengaged position in which the drive part (32) is separated from the receiving part (34).

Abstract: Wheel drive system, particularly for the ground circulation of an aircraft comprising a motor unit (22) borne by an unsuspended part (14b) of a landing gear strut (14) of the aircraft and comprising an electric motor (26) and reduction means, and a clutch device (24) connecting the output shaft (26a) of the electric motor (26) to the wheel (12) via the reduction means. The clutch device (24) comprises a dog-clutch mechanism (32, 34) comprising a drive part (32) secured to the motor unit (22) and a receiving part (34) secured to the rim (12b) of the wheel (12), and a system for the translational movement, along the axis of the axle crossbeam (20) of the landing gear strut (14), of the drive part (32) into an engaged position in which the drive part (32) collaborates with the receiving part (34) and a disengaged position in which the drive part (32) is separated from the receiving part (34).

Abstract: An electrical assist device is provided for a bicycle. The device includes an electric machine, a drive pinion, an attachment device, a source of electrical energy, and a controller. The attachment device fixes the electric machine to the bicycle near a tire of a wheel of the bicycle. The source of electrical energy powers the electric machine. The controller controls the electric machine. The electric machine includes a rotor, which drives the drive pinion. The drive pinion includes teeth structured to mesh tangentially with complementary teeth fastened to the tire.

Abstract: An electrical assist device is provided for a bicycle. The device includes an electric machine, a drive pinion, an attachment device, a source of electrical energy, and a controller. The attachment device fixes the electric machine to the bicycle near a tire of a wheel of the bicycle. The source of electrical energy powers the electric machine. The controller controls the electric machine. The electric machine includes a rotor, which drives the drive pinion. The drive pinion includes helicoidal teeth structured to mesh tangentially with complementary teeth fastened to the tire.

Abstract: The invention concerns in particular an electrical assist device for a bicycle, said device comprising: an electric machine (2) comprising a rotor, a drive pinion (3) driven by the rotor of the electric machine, fixing means (4) for fixing the electric machine to the bicycle (1) in the vicinity of a tyre (5) of a wheel (61; 62) of said bicycle, a source (7) of electrical energy for powering the electric machine, means (8) for controlling the electric machine, characterized in that the drive pinion includes teeth (31) intended to mesh tangentially with complementary teeth (51) fastened to said tyre (5).

Abstract: Wheel motorization system, notably for an aircraft running along the ground, comprising an electric motor (5), a driving member (6) integral with the hub (7) of the wheel (2), a clutch device (10) connecting the output shaft (5a) of the motor (5) to the driving member (6) via reduction means (20). The clutch device (10) comprises a freewheel device (12) allowing transmission of the rotational torque only in a first torque transmission direction when the aircraft is travelling forwards.

Abstract: The invention concerns in particular an electrical assist device for a bicycle, said device comprising: an electric machine (2) comprising a rotor, a drive pinion (3) driven by the rotor of the electric machine, fixing means (4) for fixing the electric machine to the bicycle (1) in the vicinity of a tyre (5) of a wheel (61; 62) of said bicycle, a source (7) of electrical energy for powering the electric machine, means (8) for controlling the electric machine, characterized in that the drive pinion includes teeth (31) intended to mesh tangentially with complementary teeth (51) fastened to said tyre (5), the teeth (31) of the drive pinion being helicoidal teeth.

Abstract: A motorizing system is provided for powering a wheel associated with a suspension of an aircraft, so that the aircraft can be moved around on ground. The motorized system includes a motor unit, a drive member that is structured to be secured to the wheel, and a clutch device that connects an output shaft of the motor unit to the drive member. The motor unit is structured to be secured to a sprung part of a suspension strut. A positive transmission occurs between the motor unit and the drive member.

Abstract: The invention relates to a system for motorizing a wheel (2), the system comprising a motor unit (4), a drive member (6) secured to the wheel (2) and a clutch device (7) connects the output shaft (8) of the motor unit (4) to the drive member (6). According to the invention, the motor unit (4) comprises an electric motor (11) and is carried by an un-sprung part of a suspension strut (3) of an aircraft so that the latter can be made to move along the ground.

Abstract: A tank (1) for storing fluid under high pressure, of cylindrical overall shape and round cross section comprising at each of its ends along its axis (2), a metal end piece (3, 4), a liner (6) enveloping the said end pieces, and a structural layer (7) of fiber impregnated with thermosetting resin enveloping the said liner.

Abstract: The invention relates to a system for motorizing a wheel (2), the system comprising a motor unit (4), a drive member (6) secured to the wheel (2) and a clutch device (7) connects the output shaft (8) of the motor unit (4) to the drive member (6). According to the invention, the motor unit (4) comprises an electric motor (11) and is carried by an unsprung part of a suspension strut (3) of an aircraft so that the latter can be made to move along the ground.

Abstract: The invention relates to a motorizing system for powering a wheel (5) associated with a suspension, the system comprising a motor unit (3) and a drive member (4) secured to the wheel (5). According to the invention, the motor unit is secured to the sprung part of the suspension strut (2) and a clutch device (6) connects the output shaft (7) of the motor unit (3) to the drive member (4).

Abstract: A tank (1) for storing fluid under high pressure, of cylindrical overall shape and round cross section comprising at each of its ends along its axis (2), a metal end piece (3, 4), a liner (6) enveloping the said end pieces, and a structural layer (7) of fibre impregnated with thermosetting resin enveloping the said liner.

Abstract: A cutting device and method for a tire reinforcement cord, the cutting device including a knife mounted on the periphery of a first rotary disk, and a second rotary disk mounted opposite the first rotary disk, and in which the knife of the first disk and the second disk are brought into cutting contact with the reinforcement while driving the first and second disks in rotation, the cutting device being preset so that, on cutting, the knife engages with said reinforcement, while the peripheral speed of said first and second rotary disks is close to the linear speed of the reinforcement.

Abstract: A toroidal core is produced on a rim 1 comprising a central portion connecting two annular lateral anchoring zones. The rim has an air passage orifice which can be selectively closed or opened and connected to a source of pressure, to the atmosphere or to vacuum. A conduit 3 passes through the rim and has a valve 30 which can be selectively closed or opened, the conduit extending to an orifice to which a pipeline can be connected by a suitable flange 13. A stretchable membrane 2 is mounted on the radially outer side of the rim and is fastened to it in air-tight manner on anchoring zones over the entire periphery of said rim so as to define a closed space on the radially outer side of said rim between the rim and the membrane. A fluid 6 fills said closed space to overflowing, said membrane being pressed against a mold 5.