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. 10, 2020
Filed:
Jun. 08, 2016
Applicant:
National Oilwell Varco Norway As, Kristiansand S, NO;
Inventors:
Michael Rygaard Hansen, Grimstad, NO;
Jesper Kirk Sørensen, Grimstad, NO;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 11/05 (2006.01); F15B 21/00 (2006.01); F15B 11/10 (2006.01); F15B 13/02 (2006.01); F15B 13/04 (2006.01); F15B 13/042 (2006.01);
U.S. Cl.
CPC ...
F15B 11/05 (2013.01); F15B 11/10 (2013.01); F15B 13/026 (2013.01); F15B 13/029 (2013.01); F15B 13/0417 (2013.01); F15B 13/0426 (2013.01); F15B 21/001 (2013.01); F15B 21/008 (2013.01); F15B 2211/20546 (2013.01); F15B 2211/3053 (2013.01); F15B 2211/30535 (2013.01); F15B 2211/5059 (2013.01); F15B 2211/50536 (2013.01); F15B 2211/50581 (2013.01); F15B 2211/526 (2013.01); F15B 2211/528 (2013.01); F15B 2211/575 (2013.01); F15B 2211/6057 (2013.01); F15B 2211/6313 (2013.01); F15B 2211/6316 (2013.01); F15B 2211/6355 (2013.01); F15B 2211/652 (2013.01); F15B 2211/6653 (2013.01); F15B 2211/6656 (2013.01); F15B 2211/67 (2013.01); F15B 2211/7053 (2013.01); F15B 2211/7058 (2013.01); F15B 2211/75 (2013.01); F15B 2211/761 (2013.01); F15B 2211/857 (2013.01); F15B 2211/8613 (2013.01); F15B 2211/8616 (2013.01);
Abstract
Methods of controlling an actuator during operation using a hydraulic circuit, and related apparatus, are described. The circuit has a first path section along which fluid is supplied to a first chamber of the actuator using a first valve and a second path section along which fluid is extracted from a second chamber of the actuator using a second valve. Pressure data associated with a pressure of the fluid supplied to the first side of the actuator are obtained, a pilot pressure pPilot is produced based on the data and the first and second valves are configured based on the pilot pressure pPilot.