Bearings – Rotary bearing – Plain bearing
Patent
1996-06-05
1997-07-08
Hannon, Thomas R.
Bearings
Rotary bearing
Plain bearing
384322, 384291, F16C 3310
Patent
active
056453574
ABSTRACT:
A shaft bushing provides a internal circumferential or annular surface and an adjacent internal radial surface both of which receive lubricant directly from an aperture in the bushing, in such a manner that outfacing surfaces, radial surfaces and in-facing surfaces of elements which are either a part of the shaft itself, or are mounted on the shaft, receive lubricant directly from the aperture. The aperture is formed as a straight hole and directed at an angle through the bushing wall so that its interface with the interior surfaces of the bushing are elliptical. Lubricant is directed through this hole to the interior of the bushing and thence to surfaces in contact therewith. The placing of the hole at an angle allows the lubricant to move in a straight line with no turns which might contribute to clogging, and results in a smooth transfer of lubricant from the hole to the interior surfaces in two orthogonal planes.
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patent: 4890939 (1990-01-01), Koschinat
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