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:
Sep. 26, 2017
Filed:
Nov. 06, 2012
Shell Oil Company, Houston, TX (US);
Derk Lucas Klompsma, Sappemeer, NL;
Lubbertus Lugtmeier, Assen, NL;
SHELL OIL COMPANY, Houston, TX (US);
Abstract
A safety valve for a hydrocarbon wellbore includes a valve housing; a tubular valve member having an axially extending tube wall; and an operating mechanism for operating the valve member. The housing has a passage extending from a lower opening to an upper opening. The tube wall has one or more radial inlet apertures therethrough. The lower end part of the tube wall is closed. The valve member is axially movable in the passage between a flow position and a blocking position. In blocking position, the valve member is retracted in the housing such that the inlet apertures lie inside the housing and fluid flow between the lower opening and upper opening is prevented by the closed lower end part of the valve member. In the flow position, the valve member projects below the housing such that the one or more radial inlet apertures lie outside the housing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile