A flexible shaft which has a plurality of metal sleeves having a smaller end portion and a larger end portion at opposite ends of the metal sleeve. One of the end portions has a plurality of protrusions whereas the other one has a plurality of apertures capable of accommodating a part of each of the plurality of protrusions. The smaller end portion of is partially inside the larger end portion of the next metal sleeve in the flexible shaft. Each metal sleeve is movably connected to the next metal sleeve using the protrusions and apertures. The apertures are notably larger than the protrusions in lengthwise direction of the flexible shaft which allows two adjacent metal sleeves to be in position where their rotation axes are not parallel.

A universal joint is provided, including: a seat, including a receiving room extending in an axial direction and at least one through hole in communication with the receiving room; a connecting member, including a ball head rotatably received within the receiving room; and an assembling mechanism, including at least one blocking member and a sleeve member sleeved around the seat, the at least one blocking member being received within the at least one through hole and blockable with the ball head in the axial direction, the sleeve member covering the at least one through hole; wherein the seat has a first hardness, the sleeve member has a second hardness smaller than the first hardness, an outer circumferential wall of the seat is partially embedded within an inner circumferential wall of the sleeve member.

A connecting mechanism between an aircraft door and a structure of the aircraft, a related aircraft and method are provided. The connecting mechanism includes an arm intended to be hinged on to the structure, a rotating connection between the door and the arm. The rotating connection may be disengaged from a connection configuration for connecting the door with the arm in an open position of the door, into an uncoupling configuration for uncoupling of the door from the arm, in a closed door position of the door.

A joint assembly includes a first shaft having an end, a second shaft having an end, a first inner ring coupled to the first shaft, and a second inner ring coupled to the second shaft. The assembly further includes a sleeve coupled to the first and second inner rings, the first and second inner rings disposed within the sleeve, and a centering device engaging the ends of the first and second shaft. The centering device is configured to maintain the angular positions of the first and second shafts relative to one another, and the centering device is substantially fixed from rotation during rotation of the first and second shafts.

A joint assembly includes a first shaft having an end, a second shaft having an end, a first inner ring coupled to the first shaft, and a second inner ring coupled to the second shaft. The assembly further includes a sleeve coupled to the first and second inner rings, the first and second inner rings disposed within the sleeve, and a centering device engaging the ends of the first and second shaft. The centering device is configured to maintain the angular positions of the first and second shafts relative to one another, and the centering device is substantially fixed from rotation during rotation of the first and second shafts.

An articulating driver having a ball-in-socket joint. The driver may include a driver tip having a spherical head, a retention cap having a domed surface to mate with the spherical head, an input shaft, a spring disposed in an end of the input shaft and in a recess of the retention cap opposite that of the domed surface, and a housing that receives the input shaft, the spring, the retention cap and the spherical head. The housing may have a tapered end to positionally retain the spherical head therein. In another aspect, the driver may include a driver tip coupled to the input shaft that includes an interface to engage a screw. A bushing may engage the driver tip at one end and receive the screw at the other end to retain the screw within the driver.

An articulating driver having a ball-in-socket joint. The driver may include a driver tip having a spherical head, a retention cap having a domed surface to mate with the spherical head, an input shaft, a spring disposed in an end of the input shaft and in a recess of the retention cap opposite that of the domed surface, and a housing that receives the input shaft, the spring, the retention cap and the spherical head. The housing may have a tapered end to positionally retain the spherical head therein. In another aspect, the driver may include a driver tip coupled to the input shaft that includes an interface to engage a screw. A bushing may engage the driver tip at one end and receive the screw at the other end to retain the screw within the driver.

An articulating driver having a ball-in-socket joint. The driver may include a driver tip having a spherical head, a retention cap having a domed surface to mate with the spherical head, an input shaft, a spring disposed in an end of the input shaft and in a recess of the retention cap opposite that of the domed surface, and a housing that receives the input shaft, the spring, the retention cap and the spherical head. The housing may have a tapered end to positionally retain the spherical head therein. In another aspect, the driver may include a driver tip coupled to the input shaft that includes an interface to engage a screw. A bushing may engage the driver tip at one end and receive the screw at the other end to retain the screw within the driver.

An angle drive socket tool that provides interchangeable multi-angular socket for inserting a tool. A drive shaft has a driver engagement end and a magnetic enabled concave fastener receiving end with retainment and drive engagement pins. A driver component having a spherical insert end with a drive pin engagement channel extending there about an oppositely disposed drive configured input end, such as a hex socket suitable to drive a fastener of choice as illustrated in the preferred embodiment.

A power door actuation system including a swing door actuator assembly having a rotatable drive nut assembly operable to move the door between a closed position and at least one open position to provide a power opening and closing function.