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:
Feb. 24, 2015
Filed:
Feb. 17, 2012
Julian R. Davis, North Somerset, GB;
Martin Stokes, North Somerset, GB;
Julian R. Davis, North Somerset, GB;
Martin Stokes, North Somerset, GB;
Vetco Gray Controls Limited, Nailsea, GB;
Abstract
A method of energizing a coil of a solenoid of a directional control valve, wherein an armature of the solenoid moves between a first position in which the solenoid is operating and a second position in which the solenoid is not operating, the method comprising energizing the coil with a voltage, controlling the voltage, detecting a current in the coil at which the armature of the solenoid moves between the first position and the second position, and using the current at which the armature of the solenoid moves between the first position and the second position increased by a margin as an operating current for energizing the coil of the solenoid.