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:
Nov. 20, 2007
Filed:
Feb. 28, 2006
Paul W. Futa, Jr., North Liberty, IN (US);
George S. Wieger, Niles, MI (US);
Steven A. Lewis, South Bend, IN (US);
Gregory A. Lafferty, Plymouth, IN (US);
John C. Van Oosterum, Mishawaka, IN (US);
Paul W. Futa, Jr., North Liberty, IN (US);
George S. Wieger, Niles, MI (US);
Steven A. Lewis, South Bend, IN (US);
Gregory A. Lafferty, Plymouth, IN (US);
John C. Van Oosterum, Mishawaka, IN (US);
Honeywell International, Inc., Morristown, NJ (US);
Abstract
A controlled piston () having a first end () mounted in a controlled piston sleeve () and a spool () movably mounted in a spool sleeve (), a first fluid passage () from the spool () to the controlled piston first end (), the position of the spool () affecting a position of the controlled piston (), an FFV () in an FFV sleeve () in the first fluid passage () having a first end section (), a second end section () and a central section () having a third diameter less than the diameters of the first and second sections, the FFV () being shiftable between a first position blocking the first fluid passage () and a second position allowing fluid flow past the central section () to the controlled piston (), and a second fluid passage () from the spool () to the FFV first end section (). Shifting the spool () to a failsafe position shifts the FFV () to the first position to fix the controlled piston () in place.