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. 24, 2012
Filed:
May. 29, 2008
Richard C. Jones, Lafayette, LA (US);
Jean-luc Jacob, Bellocq, FR;
Todd Travis, Humble, TX (US);
Brandon Cain, Houston, TX (US);
Eric Calzoncinth, Baytown, TX (US);
Paul Perez, Sugar Land, TX (US);
Richard C. Jones, Lafayette, LA (US);
Jean-Luc Jacob, Bellocq, FR;
Todd Travis, Humble, TX (US);
Brandon Cain, Houston, TX (US);
Eric Calzoncinth, Baytown, TX (US);
Paul Perez, Sugar Land, TX (US);
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
A safety valve apparatus has a housing with a bore and a projection in the bore. A flapper rotatably disposed on the housing is movable relative to the bore between opened and closed positions, and a packing element disposed on the housing is compressible to engage an inner conduit wall surrounding the housing. An upper sleeve disposed within the bore above the projection is hydraulically movable from a first position to a second position via the hydraulic communication with a port in the projection. The first sleeve when moved to the second position compresses the packing element. A piston disposed in the housing hydraulically communicates with the port and couples to a second sleeve disposed within the bore below the projection. The second sleeve conceals the piston and is hydraulically movable via the hydraulic communication of the port with the piston to open and close the flapper.