Half thrust bearing
First Claim
1. A half thrust bearing of a substantially semi-circular shape;
- wherein a thrust relief, slanting toward a confronting end of said half thrust bearing progressively away from a bearing surface of said half thrust bearing, is formed at each of circumferentially-spaced opposite end portions of said bearing surface, so that those portions of said bearing surface, disposed adjacent respectively to said thrust relieves, are higher in strength than the other portions of said bearing surface.
1 Assignment
0 Petitions
Accused Products
Abstract
There is disclosed a half thrust bearing of a substantially semi-circular shape. A thrust relieve 22, slanting toward a confronting end of the half thrust bearing progressively away from a bearing surface of a half thrust bearing, is formed at each of circumferentially-spaced opposite end portions of the bearing surface by pressing (cold forging), so that those portions of the bearing surface, disposed adjacent respectively to the thrust relieves 22, are higher in strength than the other portions of the bearing surface. With this construction, even if a thrust collar of a crankshaft abuts against localized portions of the bearing surface disposed adjacent to the thrust relieves 22, a bearing alloy will not subjected to premature fatigue and separation.
-
Citations
8 Claims
-
1. A half thrust bearing of a substantially semi-circular shape;
wherein a thrust relief, slanting toward a confronting end of said half thrust bearing progressively away from a bearing surface of said half thrust bearing, is formed at each of circumferentially-spaced opposite end portions of said bearing surface, so that those portions of said bearing surface, disposed adjacent respectively to said thrust relieves, are higher in strength than the other portions of said bearing surface. - View Dependent Claims (2, 3, 4)
-
5. A half thrust bearing of a substantially semi-circular shape having at least two of the following features (a) to (c);
-
(a) wherein a thrust relief, slanting toward a confronting end of said half thrust bearing progressively away from a bearing surface of said half thrust bearing, is formed at each of circumferentially-spaced opposite end portions of said bearing surface, so that those portions of said bearing surface, disposed adjacent respectively to said thrust relieves, are higher in strength than the other portions of said bearing surface; (b) wherein a corner portion of each of the opposite ends of said half thrust bearing at said bearing surface thereof is chamfered, so that those portions of said bearing surface, disposed adjacent respectively to said chamfered portions, are higher in strength than the other portions of said bearing surface; and (c) wherein end surfaces of the confronting ends of said half thrust bearing are higher in strength than the other portions of said half thrust bearing. - View Dependent Claims (6, 7, 8)
-
Specification