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. 24, 1994
Filed:
Mar. 04, 1992
Jimmie R Williamson, Jr, Carrollton, TX (US);
Otis Engineering Corporation, Carrollton, TX (US);
Abstract
A safety valve landing nipple selectively provides a pin for closing communication in the bore between the first control line and the safety valve control line so that communication between the first control line and an insert safety valve in the landing nipple housing is achieved by use of a rotary member. A rotary shifting tool is used to rotate the rotary member so that a cam sleeve pushes a poppet pin to form a metal to metal seal with a fitting adaptor connecting the first control line and the safety valve control line so as to provide communication between the surface control line and the internal bore of the landing nipple. A method of closing communication within a safety valve landing nipple between a first control line and a safety valve control line and opening communication between said first control line and an insert safety valve by use of a rotary shifter assembly to rotate a rotary member an amount sufficient to push a poppet pin to form a metal to metal seal to close communication between a first control line and a safety valve control line and open communication between the first control line and the insert safety valve.