Doctor bearing integral pressure lubrication

Details Doctor bearing integral pressure lubrication Doctor bearing integral pressure lubrication

1978-06-14

1980-01-01

Butler, Douglas C.

Cutlery

308122, 308240, F16C 3374

Patent

active

041813782

ABSTRACT:
A doctor assembly for a paper making machine including a force fed lubricated bearing structure therefor with a doctor shaft having a journal axially oscillatable in an annular bearing housing with a bearing sleeve insert between the journal and the housing having axially extending grooves therein with annular outer end seals axially outwardly of the bearing insert and annular lip seals at the end of the bearing insert carried on the bearing and permitting flow of lubricant axially outwardly from the bearing to the annular pressure spaces between the lip seals and end seals and passages extending between the annular pressure chambers between the seals to the center of the bearing and having check valves in the passages preventing back flow but permitting lubricant to flow from the annular pressure chambers to the center of the bearing.

REFERENCES:
patent: 429507 (1890-06-01), Conradson
patent: 1132759 (1915-03-01), Bache
patent: 2629639 (1953-02-01), Johansen
patent: 2757990 (1956-08-01), Barlow
patent: 3201183 (1965-08-01), Buske
patent: 3210137 (1965-10-01), Williams
patent: 3378318 (1968-04-01), Rafique et al.
patent: 3380789 (1968-04-01), Nigh
patent: 3394972 (1968-07-01), Bossler, Jr.
patent: 3400937 (1968-09-01), Crankshaw
patent: 3510177 (1970-05-01), Shimula
patent: 3510177 (1970-05-01), Shimula
patent: 3522977 (1970-08-01), Lee et al.
patent: 3687510 (1972-08-01), Cooper
patent: 3973781 (1976-08-01), Grorich

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