Method of increasing the off bottom load capacity of a bearing a

Details Method of increasing the off bottom load capacity of a bearing a Method of increasing the off bottom load capacity of a bearing a

1991-09-26

1992-09-29

Hannon, Thomas R.

Bearings

Rotary bearing

Water lubricated propellor shaft or well shaft

2989806, 175107, 384618, E21B 400, F16C 1930, B21D 5310

Patent

active

051509725

ABSTRACT:
A method of increasing the off bottom load capacity of a bearing assembly having an outer tubular member, an inner tubular member telescopically received within the outer tubular member, and bearings disposed between the inner tubular member and outer tubular member to facilitate relative rotation of the outer tubular member and inner tubular member while bearing radial and axial loads. The method consists of the following described steps. Firstly, form a first shoulder and a second shoulder in opposed spaced relation on an interior surface of the outer tubular member. Secondly, form a first shoulder and a second shoulder in opposed spaced relation on an exterior surface of the inner tubular member. The shoulders on the inner tubular member are generally parallel to the shoulders on the outer tubular member thereby defining a containment chamber. Thirdly, place at least one thrust bearing in the containment chamber. The thrust bearing having a first side race and a second side race. When the bearing assembly is placed in compression the first shoulder of the outer tubular member bears against the first side race and the second shoulder of the inner tubular member bears against the second side race. When the bearing assembly is placed in tension the second shoulder of the outer tubular member bears against the second side race and the first shoulder of the inner tubular member bears against the first side race.

REFERENCES:
patent: 3449030 (1969-06-01), Tiraspolsky
patent: 4029368 (1977-06-01), Tschirky et al.
patent: 4501454 (1985-02-01), Dennis et al.
patent: 4511193 (1985-04-01), Geczy
patent: 4729675 (1988-03-01), Trzeciak et al.

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