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:
Jun. 11, 1991
Filed:
Jun. 27, 1989
Applicant:
Inventor:
Edward C Tibbals, Jr, Jamestown, NC (US);
Assignee:
Interface, Inc., LaGrange, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
25112902 ; 25112901 ; 25112908 ; 25112907 ; 25112917 ;
Abstract
Fluid flow control valve in which bidirectional displacement of a valve operator is effected by momentary utilization of high current flow in a permanent magnetic flux field and longer term utilization of minimal current flow with in said flux field to maintain valve operator position in limiting displaced condition.