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:
Dec. 19, 1989
Filed:
Feb. 16, 1989
Raymond A Frisby, Houston, TX (US);
George E Conover, Carencro, LA (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A method and apparatus are provided for towing of a fluid containing tubular conduit above a sea bed floor and within a body of water, such as an ocean or river. First and second inflatable sealing elements are placed within the interior of the conduit with each of the sealing elements being movable from an unexpanded to an expanded position to effect a sealed interior section of the conduit. A movable pig is placed within the section and between the sealing elements and is activatable to displace fluid within the section when the sealing elements are in sealed relation to the conduit. A valve means is provided for discharge of the fluid out of the section during movement of the pig. A gaseous body is selectively injected through means, such as a valve, into the section to urge the pig into displacement motion whereby buoyancy may be provided through the section sufficient to raise and move the conduit above the sea bed floor while maintaining all of the conduit submerged within the body of water for towing purposes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile