Drive shaft assembly with constant velocity joints
AssigneeDash Drilling Products, LLC
InventorKEITH BULLIN
Life of this patent
Estimating the term…
Loading patent…
AssigneeDash Drilling Products, LLC
InventorKEITH BULLIN
Estimating the term…
A drive shaft assembly for a down hole drilling motor is provided. The drive shaft assembly includes a drive shaft having a first end portion engaging a first housing and a second end portion, engaging a second housing. The first end portion and the first housing form the first constant velocity joint and the second end portion and the second housing form the second constant velocity joint of the drive shaft assembly. Each end portion including a base surface having a pair of prongs extending away from the base surface and a cylindrical side wall having a plurality of ball bearings held in a plurality of circumferentially spaced pockets. Each housing includes a cavity to retain respective end portions of the drive shaft. An inner side wall of each housing includes a plurality of cylindrical grooves to receive the plurality of ball bearings to transfer torque. An internal wall of the housing includes a first chamber and a second chamber to receive and retain the first prong and the second prong to transfer torque and thrust loads between the shaft and the housings.
A constant velocity joint, comprising:
Dependencies are inferred from the claim text.