Copper-based spinodal alloy bearings

Bearings – Rotary bearing – Roller drill bit

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Details

175371, 384913, E21B 1022, F16C 1712, F16C 3312

Patent

active

046419764

ABSTRACT:
This invention relates to the use of spinodal alloys consisting essentially of copper-nickel-tin for bearing surfaces formed between roller cutter cones of sealed bearing rock bits.

REFERENCES:
patent: 1928747 (1933-10-01), Wise
patent: 3674575 (1972-07-01), Prill et al.
patent: 3721307 (1973-03-01), Mayo
patent: 3937638 (1976-02-01), Plewes
patent: 3995917 (1976-12-01), Quinlan
patent: 4012238 (1977-03-01), Scales
patent: 4052204 (1977-10-01), Plewes
patent: 4090890 (1978-05-01), Plewes
patent: 4105263 (1978-08-01), Sorensen et al.
patent: 4142918 (1979-03-01), Plewes
patent: 4260432 (1981-04-01), Plewes
Lefeure et al, Age Hardening in Cu-15Ni-8Sn Alloy, 1978, "American Society for Metals and the Metallurgical Society of AIME.

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