A light weight hybrid torque transfer joint trunnion has an integral metal hub spline fitting oriented on a center axis. This integral metal hub spline fitting may be made of steel, aluminum, titanium, or the like and may be generally cylindrical. The integral metal hub spline fitting defines an integral central internally-splined mast or driveshaft coupling opening centered about the center axis. A composite material body centrally retains, and is cured to, the metal hub spline fitting. Torque transfer joint link attachment pins extend from the composite material body and are rigidly linked to the metal hub spline fitting. In an example constant-velocity joint, a plurality of pivoting linkages may each be rotatably coupled to the torque transfer joint link attachment pins, and each of the plurality of pivoting linkages may, in turn be secured to a rotor yoke configured to mount a plurality of rotorcraft blades.

A constant velocity universal joint has a large-diameter mounting portion fastened and fixed by a first fastening clamp onto a boot receiving portion of an outer joint member, and a small-diameter mounting portion fastened and fixed by a second fastening clamp onto a boot receiving portion of a shaft. A circumferential clamp groove to which the first fastening clamp is fitted is formed in an outer peripheral surface of the large-diameter mounting portion. A protruding portion is formed at a boot outer side end portion of an inner peripheral surface of the large-diameter mounting portion. A recessed portion to which the protruding portion is fitted is formed in the boot receiving portion being a cylindrical surface of the outer joint member. A projection is formed in the vicinity of a boot inner side of the recessed portion.

This system and method is directed to A joint system comprising: a rings system having: a first pair of rings pivotally attached to each other by a first set of rotating housings, the first set of rotating housings being configured to rotate along a first axis and a second pair of rings pivotally attached to each other by a second set of rotating housings, the second set of rotating housings being configured to rotate along a second axis; a first sliding support subassembly configured to slidingly receive a first ring from the rings system; and a second sliding support subassembly configured to slidingly receive a second ring from the rings system; a primary gears system carried by and having a first and second primary gear wherein the first primary gear and the second primary gear are rotatably attached to a central connecting support.

A constant velocity (CV) joint system include a CV joint assembly with a first elongated ring pivotally attached to a second elongated ring via a first rotating housing and a second rotating housing, the first rotating housing and the second rotating housing being configured to rotate along a first axis; a third elongated ring pivotally attached to a fourth elongated ring via a third rotating housing and a fourth rotating housing, the third rotating housing and the fourth rotating housing being configured to rotate along a second axis; a first sliding support; and a second sliding support. The first sliding support includes a first elongated opening; and a second elongated opening, the first elongated opening extending in a direction relatively perpendicular to the second elongated opening. The second sliding support includes a third elongated opening and a fourth elongated opening, the third elongated opening extending in a direction relatively perpendicular to the fourth elongated opening.

A constant velocity joint having driving and driven pivot arm segments coupled together with a pivotal bearing element provides high power density transmission through a large dynamic angle. The constant velocity joint may be configured for axial movement, such as a plunge capability, or may be a fixed center joint.

A light weight hybrid torque transfer joint trunnion has an integral metal hub spline fitting oriented on a center axis. This integral metal hub spline fitting may be made of steel, aluminum, titanium, or the like and may be generally cylindrical. The integral metal hub spline fitting defines an integral central internally-splined mast or driveshaft coupling opening centered about the center axis. A composite material body centrally retains, and is cured to, the metal hub spline fitting. Torque transfer joint link attachment pins extend from the composite material body and are rigidly linked to the metal hub spline fitting. In an example constant-velocity joint, a plurality of pivoting linkages may each be rotatably coupled to the torque transfer joint link attachment pins, and each of the plurality of pivoting linkages may, in turn be secured to a rotor yoke configured to mount a plurality of rotorcraft blades.

A coupling arrangement for connection between a first rotatable shaft and a second rotatable shaft includes a first rotatable portion connectable to the first rotatable shaft, and a second rotatable portion connectable to the second rotatable shaft. The coupling arrangement includes a first reciprocating element mechanically connected to the first rotatable portion at a first interconnecting portion for transforming a rotating motion from the first rotatable portion to a linear motion of the first reciprocating element and a second reciprocating element mechanically connected to the second rotatable portion at a second interconnecting portion for transforming a linear motion from the second reciprocating element to a rotating motion of the second rotatable portion. The coupling arrangement includes a connecting element rotatably connected to each of the first reciprocating element and the second reciprocating element for allowing a relative rotation between the connecting element and the first and second reciprocating elements, respectively.

A constant velocity joint having driving and driven pivot arm segments coupled together with a pivotal bearing element provides high power density transmission through a large dynamic angle. The constant velocity joint may be configured for axial movement, such as a plunge capability, or may be a fixed center joint.

A constant velocity joint having driving and driven pivot arm segments coupled together with a pivotal bearing element provides high power density transmission through a large dynamic angle. The constant velocity joint may be configured for axial movement, such as a plunge capability, or may be a fixed center joint.

A constant velocity universal joint has a large-diameter mounting portion fastened and fixed by a first fastening clamp onto a boot receiving portion of an outer joint member, and a small-diameter mounting portion fastened and fixed by a second fastening clamp onto a boot receiving portion of a shaft. A circumferential clamp groove to which the first fastening clamp is fitted is formed in an outer peripheral surface of the large-diameter mounting portion. A protruding portion is formed at a boot outer side end portion of an inner peripheral surface of the large-diameter mounting portion. A recessed portion to which the protruding portion is fitted is formed in the boot receiving portion being a cylindrical surface of the outer joint member. A projection is formed in the vicinity of a boot inner side of the recessed portion.