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:
May. 31, 1977
Filed:
Jun. 30, 1975
Albert L Thompson, Houston, TX (US);
Texas Pipe Line Company, Houston, TX (US);
Abstract
Methods for releasably plugging off a section of a pipe line and apparatuses for practicing or carrying out the methods are disclosed. An apparatus comprises one or more pigs, each pig having an inflatable ring therearound, inert gas therein for inflating the ring, and a remote thermal command signal receiver for initiation of expansion of the pigs responsive to a remote thermal command signal of one temperature generated by a generator at the ends of the pipe section to be sealed off for sealing the pigs in the pipe as they reach their respective pipe section termini. The remote command signals comprises thermal energy of precise temperatures.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile