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. 26, 1988
Filed:
Feb. 04, 1987
Robert C Houlgrave, Houston, TX (US);
Hughes Tool Company, Houston, TX (US);
Abstract
A quick disconnect coupling for a subsea well flowline has valves that open and close when the coupling is made up and released. The coupling has tubular upper and lower connectors, each with a flow passage. The upper connector inserts over a mandrel of the lower connector. Ball valves are located in the passage of each connector. A latch member engages the mandrel when moved by a hydraulically actuated piston and a cam. A gear assembly connected with the piston simultaneously moves the upper ball valve to the closed position. A gear assembly connected with the lower ball valve simultaneously opens the lower ball valve when the upper connector latches to the lower connector.