Engine cylinder and liner assembly
US-2016273480-A1 · Sep 22, 2016 · US
Steel piston with counter-bore design
US9677500B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9677500-B2 |
| Application number | US-201615073988-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 18, 2016 |
| Priority date | Sep 18, 2012 |
| Publication date | Jun 13, 2017 |
| Grant date | Jun 13, 2017 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A piston for an internal combustion engine is provided. The piston includes a piston body which is made of steel. The piston body has a crown portion with an upper combustion surface, a pair of skirts which depend from the crown surface, a pair of pin bosses for receiving a wrist pin and a plurality of pin boss bridges which extend from the pin bosses to the skirts. Each of the pin boss bridges extends axially to a lower end which is opposite of the crown portion and has a rib with an increased thickness at its lower end. At least one of the pin boss bridges has a generally flat counter-bore surface for providing a reference location for machining of the piston body.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of making a piston, comprising the steps of: forming a piston body to a non-final shape having a crown portion, a pair of skirts, a pair of pin bosses, and pin boss bridges interconnecting the skirts with the pin bosses; machining counter-bore surfaces into lower bridge ends of the pin boss bridges; referencing at least one of the counter-bore surfaces; and machining the piston body based off of the referenced counter-bore surface. 2. The method as set forth in claim 1 wherein the piston body has ribs at the lower bridge ends of the pin boss bridges after the forming step. 3. The method as set forth in claim 2 wherein the forming step is further defined as casting the piston body to the non-final shape. 4. The method as set forth in claim 2 wherein the forming step is further defined as forging the piston body to the non-final shape. 5. The method as set forth in claim 4 further including the step of machining the ribs into the lower bridge ends of the pin boss bridges. 6. The method as set forth in claim 1 wherein the forming step is further defined as forging the piston body to the non-final shape.
Assignees
Inventors
Classifications
the pistons being constructed from specific materials · CPC title
Steel · CPC title
- F02F3/0015Primary
Multi-part pistons · CPC title
Manufacturing · CPC title
Monolithic pistons; One piece constructions; Casting of pistons · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9677500B2 cover?
- A piston for an internal combustion engine is provided. The piston includes a piston body which is made of steel. The piston body has a crown portion with an upper combustion surface, a pair of skirts which depend from the crown surface, a pair of pin bosses for receiving a wrist pin and a plurality of pin boss bridges which extend from the pin bosses to the skirts. Each of the pin boss bridges…
- Who is the assignee on this patent?
- Federal Mogul Corp, Federal Mogul Llc
- What technology area does this patent fall under?
- Primary CPC classification F02F3/0015. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 13 2017 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).