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:
Nov. 17, 1981
Filed:
Feb. 11, 1980
Applicant:
Inventors:
William A Valka, Spring, TX (US);
Steven A Porter, Houston, TX (US);
Assignee:
Armco Inc., Middletown, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
251323 ; 251333 ;
Abstract
Indicator valve unit for providing a change in fluid pressure as a remote indication of whether an object occupies a desired position. Particularly useful for indicating whether a component, such as a multiple string tubing hanger, has been properly oriented and landed in an underwater well installation, the indicator valve unit provides for automatic separation of the sensing element of the unit from the sensed object as soon as the valve has been actuated.