Drag bit construction
Abstract
A mounting movable with respect to an adjacent hard face has a projecting drag bit adapted to engage the hard face. The drag bit is disposed for movement relative to the mounting by encounter of the drag bit with the hard face. That relative movement regulates a valve in a water passageway, preferably extending through the drag bit, to play a stream of water in the area of contact of the drag bit and the hard face and to prevent such water play when the drag bit is out of contact with the hard face.
- Inventors:
-
- Lafayette, CA
- Issue Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- OSTI Identifier:
- 865760
- Patent Number(s):
- 4569558
- Assignee:
- Regents of University of California (Berkeley, CA)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21C - MINING OR QUARRYING
- DOE Contract Number:
- AC03-76SF00098
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- drag; bit; construction; mounting; movable; respect; adjacent; hard; projecting; adapted; engage; disposed; movement; relative; encounter; regulates; valve; water; passageway; preferably; extending; play; stream; contact; prevent; movement relative; drag bit; relative movement; /299/
Citation Formats
Hood, Michael. Drag bit construction. United States: N. p., 1986.
Web.
Hood, Michael. Drag bit construction. United States.
Hood, Michael. Wed .
"Drag bit construction". United States. https://www.osti.gov/servlets/purl/865760.
@article{osti_865760,
title = {Drag bit construction},
author = {Hood, Michael},
abstractNote = {A mounting movable with respect to an adjacent hard face has a projecting drag bit adapted to engage the hard face. The drag bit is disposed for movement relative to the mounting by encounter of the drag bit with the hard face. That relative movement regulates a valve in a water passageway, preferably extending through the drag bit, to play a stream of water in the area of contact of the drag bit and the hard face and to prevent such water play when the drag bit is out of contact with the hard face.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1986},
month = {Wed Jan 01 00:00:00 EST 1986}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.