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. 19, 2013
Filed:
Apr. 21, 2010
Applicant:
Neil Skoog, Ostrander, OH (US);
Inventor:
Neil Skoog, Ostrander, OH (US);
Assignee:
Atlas Copco Drilling Solutions, Inc., Garland, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
F16D 31/02 (2006.01); F15B 13/04 (2006.01); F16K 31/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and systems for operating a cylinder lock valve to control fluid flow to a hydraulic cylinder operating a drilling rig sub-system. The lock valve 1) allows fluid flow through the valve if pressure on a main and pilot area overcomes a closing spring force on the valve, or 2) blocks flow through the valve if a loss in charge pressure in the main and pilot area falls below the closing spring force on the valve.