Bearing assembly with adjustable lock nut

Details Bearing assembly with adjustable lock nut Bearing assembly with adjustable lock nut

1978-08-18

1980-04-22

Butler, Douglas C.

Cutlery

175371, 308230, F16C 1900

Patent

active

041992016

ABSTRACT:
An in-hole, fluid driven motor has a stator and a rotor to drive a bore hole drilling bit. The bit is connected to the rotor by a drive shaft rotatable in a bearing housing connected to the stator, and drilling fluid flows through the drive shaft and exits through the bit. Radial and thrust bearings include a first bearing which transmits thrust from the housing to the bit, while drilling, and a second bearing which transmits thrust to the housing from the shaft, when the bit is off the bottom of the hole. An adjustable lock nut is connected to the drive shaft and a ported cap which connects the drive shaft to a connecting rod coupled with the rotor, and permits alternate unloading of the first and second bearings and the elimination of increased bearing tolerances as wear occurs.

REFERENCES:
patent: 3879094 (1975-04-01), Tschirky et al.
patent: 4029368 (1977-06-01), Tschirky et al.

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