Two rotary diamond bit designs, one operating with a chip-flushing fluid, the second including auger section to remove drilled chips, enhance usefulness of tool for exploratory and industrial core-drilling of hard, abrasive mineral deposits and structural masonry

Decker, W. E.

Hampe, W. R.

Hampton, W. H.

Simon, A. B.

English

NASA Technical Reports Server

September 1971
	 Brief 71-10358 
•	 NASA TECH BRIEF 
Marshall Space Flight Center 
NASA Tech Briefs announce new technology derived from the U.S. space program. They are issued to encourage 
commercial application. Tech Briefs are available on a aubscription basis from the National Technical Information 
Service, Springfield; Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology. Utilization Office, NASA, Code KT, Washington, D. F. 20546. 
Improved Diamond Coring Bits Developed for Dry and Chip-Flush Drilling 
Two new rotary diamond bit designs enhance the 
usefulness of this tool for exploratory and industrial 
core-drilling of hard, abrasive mineral deposits and 
structural masonry. In one design, the bit operates 
with a chip-flushing fluid, as do conventional 
bits. In the second, the bit includes an auger section 
which removes the drilled chips, obviating the need 
for a flushing fluid. Both bits have a longer opera-
ting life than that of previous designs. In addition, 
the bits with auger sections are particularly useful 
• in drilling operations when flushing agents cannot 
be tolerated. Examples of such operations are dec-
orative stone quarrying, where stains from flushing 
liquids would increase finishing costs, and masonry 
wall drilling in hospitals, hotels, and food-processing 
plants, where disposal of the liquids would be a 
problem.
Note: 
Requests for further information may be directed 
to:
Technology Utilization Officer 
Code A&TS-TU 
Marshall Space Flight Center 
Huntsville, Alabama 35812 
Reference: B71-10358 
Patent status: 
Inquiries about obtaining rights for the commercial 
use of this invention may be made to: 
Patent Counsel 
Mail Code A&TS-PAT 
George C. Marshall Space Flight Center 
Marshall Space Flight Center, Alabama 35812 
Source: W. R. Hampe, A. B. Simon,

W. H. Hampton, and W. E. Decker of

Westinghouse Electric Corp.

under contractto
Marshall Space Flight Center

(MFS-21 111) 
Category 07 
This document was prepared under the sponsorship of the National
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Aeronautics and Space Administration. Neither the United States
	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States
	 will be free from privately owned-rights.
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Improved diamond coring bits developed for dry and chip-flush drilling

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