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Maneuvering impact boring head

United States Patent

5,794,718
August 18, 1998
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
An impact boring head may comprise a main body having an internal cavity with a front end and a rear end. A striker having a head end and a tail end is slidably mounted in the internal cavity of the main body so that the striker can be reciprocated between a forward position and an aft position in response to hydraulic pressure. A compressible gas contained in the internal cavity between the head end of the striker and the front end of the internal cavity returns the striker to the aft position upon removal of the hydraulic pressure.
Zollinger; W. Thor (Idaho Falls, ID), Reutzel; Edward W. (Idaho Falls, ID)
Lockheed Idaho Technologies Company (Idaho Falls, ID)
08/ 613,301
March 11, 1996
CONTRACTUAL ORIGIN OF THE INVENTION The United States Government has rights in this invention disclosed under contract number DE-AC07-84ID12435 between the U.S. Department of Energy and Westinghouse Idaho Nuclear Company, now contract number DE-AC07-94ID13223 with Lockheed Idaho Technologies Company.