Surface coating for metal matrix composites
US-2016375486-A1 · Dec 29, 2016 · US
Manufacturing methods for high shear roller cone bits
US8955413B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8955413-B2 |
| Application number | US-84458910-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 27, 2010 |
| Priority date | Jul 31, 2009 |
| Publication date | Feb 17, 2015 |
| Grant date | Feb 17, 2015 |
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Abstract
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A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mounting roller cones on the at least two journals.
First claim
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What is claimed: 1. A method of manufacturing a roller cone drill bit, comprising: forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two protrusions extending downward and radially outward from a central axis of the body; machining the at least two protrusions into at least two journals; machining a ball race in one of the at least two journals; machining a ball passage, wherein a path of the ball passage…
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Frequently asked questions
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- What does patent US8955413B2 cover?
- A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mountin…
- Who is the assignee on this patent?
- Bijai Rahul, Zhang Zhehua, Bhadbhade Vikrant, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification E21B10/08. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Feb 17 2015 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).