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. 16, 1996
Filed:
Jan. 27, 1994
Applicant:
Inventor:
Alvon C Elrod, Jr, Ventura, CA (US);
Assignee:
HR Textron Inc., Valencia, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310156 ; 310 85 ; 310 90 ; 310191 ;
Abstract
A direct drive servovalve wherein a limited angle force motor is interconnected with a spool valve to convert rotary motion of the drive motor rotor to linear motion of the spool for the control of fluid from a source thereof to a load. The permanent magnets utilized in the rotor of the drive motor are positioned in such a manner that a resultant magnetic force is generated so as to urge the rotor against a bearing which supports the rotor shaft so as to substantially eliminate any radially play or sloppiness in the motor rotor.