Wear resistant sleeve for sub assembly

Details Wear resistant sleeve for sub assembly Wear resistant sleeve for sub assembly

2008-03-19

2009-10-13

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

C175S325500, C166S241600

Reexamination Certificate

active

07600587

ABSTRACT:
An apparatus for protecting a sub assembly inside a borehole of a well, with a sleeve having a sleeve outer diameter larger than the body outer diameter; a plurality of offset indentations formed on the outer side of the sleeve formed in rows of 4 to 8 offset indentations along a diagonal orientation to a sleeve axis; a plurality of a metal carbide inserts providing an interference fit into each offset indentation thereby forming a wear resistant pad on the outer side of the sleeve; a sealing means disposed between the sleeve bottom beveled edge and the body forming a sealed sub assembly using at least two spring locking apparatus engaging locking indentations on the body.

REFERENCES:
patent: 3054647 (1962-09-01), Von Rosenberg
patent: 3978933 (1976-09-01), Olson et al.
patent: 3993368 (1976-11-01), Jurgens et al.
patent: 4277869 (1981-07-01), Hartwell
patent: 4296973 (1981-10-01), Hartwell

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