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:
Apr. 02, 1996
Filed:
Jan. 27, 1994
Alvon C Elrod, Jr, Ventura, CA (US);
HR Textron Inc., Valencia, CA (US);
Abstract
A direct drive servovalve which includes a limited angle force motor having an eccentric engaging a two landed spool for converting rotary motion of the motor rotor into linear motion of the spool so as to control the flow of fluid from a source under pressure thereof of to a load. The two landed spool is in direct contact with a wall of the bore defined within the valve housing as opposed to utilization of a sleeve interposed between the wall of the bore and the spool valve. A pressure equalizing passageway is connected between the pressure passageways for the purpose of substantially reducing pressure drop when the spool valve translates to allow flow of fluid through the valve.