The present invention relates to a gearbox for a wind turbine comprising: an input shaft portion adapted to be operatively connected to a wind turbine rotor shaft; and input hear wheel having teeth arranged around an outer or inner circumference of the wheel, and being attached to the input shaft portion such as to rotate with the input portion; one or more pinions including a pinion wheel arranged on a pinion shaft, the pinion wheel having teeth arranged to engage with the teeth of the input gear wheel, and the pinion shaft being rotatably mounted in a pinion support structure, wherein the input shaft portion is rotatably mounted with respect to the pinion support structure.

Known autonomous taxi systems for aircraft include a rigid connection between the aircraft wheel and a gear which is used to drive it. Such arrangements have been found to suffer from the problem that wheel deformation modes cause unacceptable wear and/or stresses within the drive system and/or wheel. The present invention thus proposes a drive system for an aircraft landing gear, the drive system comprising: a pinion gear; a drive shaft arranged to rotate the pinion gear about a drive axis; a driven gear arranged to mesh with the pinion gear to be rotatable by the pinion gear, the driven gear being connectable to a wheel of the landing gear to be capable of rotating the wheel about a wheel axis; and a flexible interface. The flexible interface comprises a plurality of driven gear coupling members, each driven gear coupling member having a first connection portion attached to the driven gear, a second connection portion adapted to be attached to the wheel at an offset distance from the wheel axis, and a joint between the first connection portion and the second connection portion, the joint permitting relative movement between the first connection portion and the second connection portion.

Known autonomous taxi systems for aircraft include a rigid connection between the aircraft wheel and a gear which is used to drive it. Such arrangements have been found to suffer from the problem that wheel deformation modes cause unacceptable wear and/or stresses within the drive system and/or wheel. The present invention thus proposes a drive system for an aircraft landing gear, the drive system comprising: a pinion gear; a drive shaft arranged to rotate the pinion gear about a drive axis; a driven gear arranged to mesh with the pinion gear to be rotatable by the pinion gear, the driven gear being connectable to a wheel of the landing gear to be capable of rotating the wheel about a wheel axis; and a flexible interface. The flexible interface comprises a plurality of driven gear coupling members, each driven gear coupling member having a first connection portion attached to the driven gear, a second connection portion adapted to be attached to the wheel at an offset distance from the wheel axis, and a joint between the first connection portion and the second connection portion, the joint permitting relative movement between the first connection portion and the second connection portion.

An epicycloidal gear assembly for use in a vehicle seat actuator includes a planetary gear that is driven by a worm gear. The planetary gear has an outer edge surface that extends between opposed sides of the gear and has a first set of external teeth, and an inner edge surface that extends between the opposed sides and defines a central opening. The worm gear includes a gear head defining a second set of external teeth, and a gear stem extending from the gear head and passing through the central opening. An outer surface of the gear stem is configured to engage the planetary gear inner edge surface in such a way as to drive the planetary gear, and the planetary gear inner edge surface defines a smooth curve between the first side and the second side.

The invention relates to a device (3) for driving actuators (7-10) for a thrust reverser, comprising a motorized drive unit (15), a brake (16) and a manual drive unit (17) for rotatably driving a drive shaft, and a control part (44) which can be actuated by an operator, the control part (44) being mobile between a motorized drive position and a manual drive position, the movement of the control part (44) from the motorized drive position into the manual drive position causing the movement of a clutch part (40) into an engaged position in order to connect the manual drive unit (17) to the drive shaft (14), and the movement of the brake (16) into the loosened configuration in order to authorize the driving of the drive shaft (14) in rotation by the manual drive unit (17).

The invention relates to a device (3) for driving actuators (7-10) for a thrust reverser, comprising a motorized drive unit (15), a brake (16) and a manual drive unit (17) for rotatably driving a drive shaft, and a control part (44) which can be actuated by an operator, the control part (44) being mobile between a motorized drive position and a manual drive position, the movement of the control part (44) from the motorized drive position into the manual drive position causing the movement of a clutch part (40) into an engaged position in order to connect the manual drive unit (17) to the drive shaft (14), and the movement of the brake (16) into the loosened configuration in order to authorize the driving of the drive shaft (14) in rotation by the manual drive unit (17).

An epicycloidal gear assembly for use in a vehicle seat actuator includes a planetary gear that is driven by a worm gear. The planetary gear has an outer edge surface that extends between opposed sides of the gear and has a first set of external teeth, and an inner edge surface that extends between the opposed sides and defines a central opening. The worm gear includes a gear head defining a second set of external teeth, and a gear stem extending from the gear head and passing through the central opening. An outer surface of the gear stem is configured to engage the planetary gear inner edge surface in such a way as to drive the planetary gear, and the planetary gear inner edge surface defines a smooth curve between the first side and the second side.

An adjustable drive mechanism, which may be used to control the elevation angle of a telescope or antenna, is disclosed. The adjustable drive mechanism can include a base plate configured to couple with a support structure and having a first spherical portion facing away from the support structure. In addition, the adjustable drive mechanism can include a gear box having a pinion gear to interface with a driven gear of a telescope or antenna, and a housing in support of the pinion gear and including a second spherical portion configured to interface with the first spherical portion of the base plate. The first spherical portion and the second spherical portion can be movable relative to one another in three rotational degrees of freedom to facilitate alignment and positioning of the pinion gear relative to the driven gear.

An adjustable drive mechanism, which may be used to control the elevation angle of a telescope or antenna, is disclosed. The adjustable drive mechanism can include a base plate configured to couple with a support structure and having a first spherical portion facing away from the support structure. In addition, the adjustable drive mechanism can include a gear box having a pinion gear to interface with a driven gear of a telescope or antenna, and a housing in support of the pinion gear and including a second spherical portion configured to interface with the first spherical portion of the base plate. The first spherical portion and the second spherical portion can be movable relative to one another in three rotational degrees of freedom to facilitate alignment and positioning of the pinion gear relative to the driven gear.

A gear system is provided for a wheel of a tractor. The gear system includes a plurality of planet gears and a plurality of rollers. The planet gears are operable to rotate to provide tractive force to the wheel. The rollers are operable to abut against an inner ring of the wheel to reduce a contact force from the wheel contacting a channel on the plurality of planet gears.