The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 1986
Filed:
Sep. 10, 1984
Harold T Barnaby, Duncanville, TX (US);
Core Laboratories, Inc., Dallas, TX (US);
Abstract
A mercury pump for analyzing geological core samples has a vertically oriented cylindrical cavity in which a lower portion forms a mercury displacement chamber and an upper portion in axial alignment with it forms a sample chamber. A pressure transducer, e.g., a strain gauge or solid-state sensor, in communication with the sample chamber produces an electrical pressure signal. A screw ball jack urges a synthetic-resin piston upwards in the displacement section to push the mercury into the sample chamber. The displacement of the mercury is sensed by an electronic encoder coupled to the hand crank of the jack, and provides data regarding both the direction and the amount of piston displacement. A microprocessor-controlled volume-measuring device has inputs connected to the encoder, and automatically provides core sample data, in response to the signals from the encoder, at the end of a core test run.