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:
Dec. 25, 1984
Filed:
Dec. 03, 1979
William T Sweeney, Ponca City, OK (US);
Conoco Inc., Ponca City, OK (US);
Abstract
An electrically actuated servocontrol system for a static pressure-operated load is connected to a supply of hydraulic fluid under pressure. The supply has an outlet port and a return port. A relief means is connected across the supply port for maintaining the supply at a constant pressure. A servocontrol valve has its inlet coupled to the outlet of the outlet port of the supply and its outlet coupled through a flow restrictor to the return sump of the power supply. The load is coupled between the output of the servocontrol valve and the flow restrictor. The flow restrictor also includes means for adjustably varying the amount of restriction so that the function of the servovalve can be made with linear variations in input control signals.