Bearing for liner-hanger assembly

F - Mech Eng,Light,Heat,Weapons – 16 – C

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308/11

F16C 33/74 (2006.01)

Patent

CA 1102856

ABSTRACT OF THE DISCLOSURE An improved bearing assembly adapted for use in a liner- hanger assembly, which bearing assembly comprises: an upper cylin- drical race element having a lower cylindrical surface; a lower cylindrical race element having an upper cylindrical surface and having adjoining inside and outside side surfaces; a load-bearing, low coefficient-of-friction bearing-liner material secured between the lower cylindrical surface of the upper race element and the upper cylindrical surface of the lower race element; inside and outside sealing-liner material secured to the inside and outside side surfaces of the lower race element; and inside and outside sleeve elements secured to and extending from the upper race ele- ment and extending parallel with the inside and outside liner material and into a close slidable and sealing relationship there- to, thereby providing an improved bearing assembly which prevents drilling mud or other debris from contacting the load-bearing bearing-liner material between the upper and lower face elements.

346417

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