Back to results
US 4,290,655 AGranted
Sintered self lubricating bearings
AssigneeMerisinter S.p.A.
InventorsGennaro Apuzzo, Gian F. Bocchini
Life of this patent
Estimating the term…
Abstract
A sintered self lubricating bearing comprising at least an area of the inner surface, with a permeability value reduced in respect to that of the remaining mass, the number of reduced permeability areas varying from one to two times the numerical value of the diameter expressed in millimeters.
Claims4
A sintered self-lubricating bearing, comprising a sleeve of a porous material of a predetermined permeability having a central opening to receive a rotatable shaft, said opening defining an inner surface;
- and a plurality of areas of a relatively small thickness located on said inner surface, said areas being equally spaced from each other in a circumferential direction and axially extended along an axis of elongation of said sleeve, and having a permeability lower than that of said porous material of said sleeve, whereby said areas reduce the penetration of the lubricating oil into said porous material of said sleeve in the region of maximum pressure and also allow a free circulation of oil within the whole porous sleeve.
Dependencies are inferred from the claim text.