Well drilling tool

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member

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Details

277 81R, 175107, F16J 1534, F16J 1540

Patent

active

042601673

ABSTRACT:
There is disclosed a well drilling tool having a body which is connectible as part of a drill string and which includes inner and outer members which are supported for rotation with respect to one another by bearing means contained within a lubricant chamber in an annular space between the members. A series of annular, vertically stacked buckets are carried by the inner and outer members within an annular space above seal means at the upper end of the lubricant chamber, and a body of material which acts as a liquid and is contained within each of at least the upper buckets has a specific gravity substantially greater than that of drilling fluid which is circulated through a portion of the annular space above the lubricant chamber.

REFERENCES:
patent: 1879625 (1932-09-01), Mendenhall et al.
patent: 1879627 (1932-09-01), Mendenhall et al.
patent: 2318181 (1943-05-01), Myers
patent: 3656565 (1972-04-01), Fox
patent: 3659662 (1972-05-01), Dicky
patent: 3971450 (1976-07-01), Fox
patent: 4019591 (1977-04-01), Fox
patent: 4019592 (1977-04-01), Fox

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