Pivot assembly with gravity lubrication feature

Details Pivot assembly with gravity lubrication feature Pivot assembly with gravity lubrication feature

1992-12-17

1994-10-25

Hannon, Thomas R.

Bearings

Rotary bearing

Plain bearing

172827, 384206, F16C 1108, F16C 2304, E02F 376

Patent

active

053583426

ABSTRACT:
The invention is an improvement in a pivot assembly of the type having an inner, generally spherical bearing and an outer race mounted for movement on the bearing surface and defining a bearing-race sliding contact area. The improvement comprises an enclosed grease chamber above the sliding contact area and in gravity flow communication with such area. The assembly has a lower annular passage which can either be left open to permit grease and dirt to flush from the sliding contact area or such passage may be closed with a dynamic seal. The invention helps exclude dirt from the sliding contact area and helps assure that such area is properly lubricated.

REFERENCES:
patent: 1520862 (1924-12-01), Faudi
patent: 2885236 (1959-05-01), Carlson
patent: 3144259 (1964-08-01), De Haan
patent: 3234670 (1966-02-01), Fryer et al.
patent: 3645340 (1972-02-01), Frisbee
patent: 3933207 (1976-01-01), Frisbee
Case Corporation 1450B Dozers "Designed Reliability" (3 pages) no date.
Case Corporation Parts Sheet 9-2, B871158A-45 no date.

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