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:
Mar. 10, 1981
Filed:
Oct. 09, 1979
Larry G Keast, Houston, TX (US);
Herbert D Horton, Mayhill, NM (US);
World Wide Oil Tools, Inc., Houston, TX (US);
Abstract
An improved method and apparatus for injecting hydraulic test fluid into a length of pipe is disclosed. Test fluid under low hydraulic pressure axially displaces a cylindrical fill valve against a retaining force. The test fluid fills the pipe through discharge ports in the side of the fill valve. The retaining force retracts the fill valve and closes the discharge ports when the pipe is full. A conduit through the fill valve then supplies high pressure hydraulic fluid for testing the internal strength of the pipe.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile