Piston for engine
US-10161353-B2 · Dec 25, 2018 · US
Piston
US11067032B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11067032-B2 |
| Application number | US-202017079881-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 26, 2020 |
| Priority date | Dec 24, 2019 |
| Publication date | Jul 20, 2021 |
| Grant date | Jul 20, 2021 |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A piston includes: a piston head; and a piston skirt connected to the piston head, wherein the piston skirt includes wall portions protruding outward from a surface of the piston skirt, the wall portions adjacent to each other in a circumferential direction of the piston skirt are inclined in directions opposite to each other with respect to a direction of movement of the piston in a bore for the piston, and define a tapered portion, and the tapered portions are spaced away from each other in the circumferential direction of the piston skirt.
First claim
Opening claim text (preview).
What is claimed is: 1. A piston comprising: a piston head; and a piston skirt connected to the piston head, wherein the piston skirt includes wall portions protruding outward from a surface of the piston skirt, the wall portions adjacent to each other in a circumferential direction of the piston skirt are inclined in directions opposite to each other with respect to a direction of movement of the piston in a bore for the piston, and define a tapered portion, the tapered portions are spaced away from each other in the circumferential direction of the piston skirt, and a distance between lower end portions of the tapered portions adjacent to each other is smaller than a distance between upper end portions of the tapered portions adjacent to each other. 2. The piston according to claim 1 , wherein the wall portions adjacent to each other are connected to each other at a combustion chamber side of an internal combustion engine in the piston skirt, and are spaced away from each other at a side opposite to the combustion chamber side in the piston skirt. 3. The piston according to claim 1 , wherein the distance between the lower end portions of the tapered portions is equal to or less than half of the distance between the upper end portions of the tapered portions. 4. The piston according to claim 1 , wherein the wall portions are arranged from one end to another end of the piston skirt in the circumferential direction. 5. The piston according to claim 1 , wherein the wall portion extends from an upper end portion of the piston skirt to a lower end portion of the piston skirt. 6. The piston according to claim 1 , wherein the piston head includes a groove for attaching a piston ring. 7. The piston according to claim 1 , wherein a cross-sectional shape of the wall portion is rectangular. 8. The piston according to claim 1 , wherein the wall portion extends straight.
Assignees
Inventors
Classifications
- F02F3/00Primary
Pistons · CPC title
involving cylinder liners · CPC title
- F02F3/027Primary
the skirt wall having cavities · CPC title
- F02F3/0015Primary
Multi-part pistons · CPC title
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Frequently asked questions
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- What does patent US11067032B2 cover?
- A piston includes: a piston head; and a piston skirt connected to the piston head, wherein the piston skirt includes wall portions protruding outward from a surface of the piston skirt, the wall portions adjacent to each other in a circumferential direction of the piston skirt are inclined in directions opposite to each other with respect to a direction of movement of the piston in a bore for t…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F02F3/00. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jul 20 2021 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).