Drill bit
US8485283B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2008 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Mar 5, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28D7/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A drill bit including a body section. The body section defines a body proximal end and a longitudinally opposed body distal end, and a body passageway extending longitudinally therethrough for receiving a fluid and conveying the fluid through the body section. An annular crown section extends longitudinally from the body section, the crown section defining a crown distal end and a longitudinally opposed crown proximal end, the crown section extending distally from the body section, the crown section defining a crown passageway extending longitudinally therethrough and in fluid communication with the body passageway. A flow directing component cooperates with the crown section to define a fluid flow channel extending through the crown section radially outwardly from the crown passageway, the fluid flow channel being self-modifiable upon the crown section reaching a predetermined wear threshold so as to modify a flow of the fluid through the fluid flow channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.