Drive shaft assembly

Details Drive shaft assembly Drive shaft assembly

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 3/221 (2006.01) E21B 17/20 (2006.01)

Patent

CA 2041808

ABSTRACT There is described an improved flexible joint and drive shaft assembly for driving a first driven shaft by a second driving shaft, the first and second shafts being offset from one another in one or more planes and including a first flexible joint casing adapted for connection to the first shaft coaxially therewith, a second flexible joint casing adapted for connection to the second shaft coaxially therewith, a drive shaft extending between the first and second joint casings, into sockets formed in the joint casings, the fit of the drive shaft into the sockets permitting tilting of the drive shaft into non-coaxial relationship with either of the joint casings, and torque transferors disposed between the ends of the drive shaft and the joint casings whereby rotation of the first joint casing causes the drive shaft and the second joint casing to rotate. The torque transferors comprise a plurality of ball bearings seated in hardened inserts around the perimeter of each end of the drive shaft, each insert being affixed in a corresponding recess formed in the surface of the drive shaft, and a plurality of hardened inserts around the perimeter of each joint casing engaging the ball bearings in generally hemispherical recesses. The inserts in the joint casing are disposed in longitudinal slots to permit them to slide a short distance and thereby permit the drive shaft to tilt.

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