Sintered bearing
US-2016348722-A1 · Dec 1, 2016 · US
Sintered bearing
US11454282B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11454282-B2 |
| Application number | US-202016878170-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 19, 2020 |
| Priority date | Mar 17, 2015 |
| Publication date | Sep 27, 2022 |
| Grant date | Sep 27, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A sintered bearing includes, on an inner peripheral surface, a cylindrical portion and a one-side increased-diameter portion, which are provided so as to be continuous in the axial direction. An end portion of one side in the axial direction of the cylindrical portion and an end portion of another side in the axial direction of the increased-diameter portion coincide, and the cylindrical portion and the increased-diameter portion are molded by performing sizing on a sintered compact having a tubular shape, which is introduced into a die.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sintered bearing comprising, on an inner peripheral surface of the bearing, a cylindrical portion having a constant diameter and an increased-diameter portion having a diameter that gradually increases in a direction away from one side of the cylindrical portion in an axial direction of the sintered bearing, the increased-diameter portion being adjacent to the cylindrical portion on the one side in the axial direction, an end portion of the one side in the axial direction of the cylindrical portion and an end portion of another side in the axial direction of the increased-diameter portion coinciding, and the cylindrical portion and the increased-diameter portion being molded by performing sizing on a sintered compact having a tubular shape, which is introduced into a die, wherein a metal structure of the cylindrical portion has an expansion along a direction of ironing by a sizing core for sizing due to the cylindrical portion having a surface molded by ironing with the sizing core, wherein a metal structure of the increased-diameter portion has an expansion along a direction of ironing by the sizing core and a higher density than the metal structure of the cylindrical portion due to the increased-diameter portion having a surface compression-molded through ironing with the sizing core, and wherein a metal structure of an outer peripheral surface of the sintered bearing has an expansion along a direction of ironing by the die due to the outer peripheral surface being molded by ironing with the die.
Assignees
Inventors
Classifications
Flake-like particles · CPC title
Iron · CPC title
in a porous body, e.g. oil impregnated sintered sleeve · CPC title
Tube or ring forms · CPC title
Porous bearings, e.g. bushes of sintered alloy · CPC title
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- What does patent US11454282B2 cover?
- A sintered bearing includes, on an inner peripheral surface, a cylindrical portion and a one-side increased-diameter portion, which are provided so as to be continuous in the axial direction. An end portion of one side in the axial direction of the cylindrical portion and an end portion of another side in the axial direction of the increased-diameter portion coincide, and the cylindrical portio…
- Who is the assignee on this patent?
- Ntn Toyo Bearing Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16C33/145. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Sep 27 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).