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Wireline system for multiple direct push tool usage

United States Patent

November 11, 2003
View the Complete Patent at the US Patent & Trademark Office
A tool latching and retrieval system allows the deployment and retrieval of a variety of direct push subsurface characterization tools through an embedded rod string during a single penetration without requiring withdrawal of the string from the ground. This enables the in situ interchange of different tools, as well as the rapid retrieval of soil core samples from multiple depths during a single direct push penetration. The system includes specialized rods that make up the rod string, a tool housing which is integral to the rod string, a lock assembly, and several tools which mate to the lock assembly.
Bratton; Wesley L. (Richland, WA), Farrington; Stephen P. (Stockbridge, VT), Shinn, II; James D. (South Royalton, VT), Nolet; Darren C. (Hartland, VT)
Applied Research Associates, Inc. (Albuquerque, NM)
09/ 916,226
July 27, 2001
This invention was made with Government support under DE-AR26-98FT40366 awarded by the United States Department of Energy. The Government has certain rights in the invention.