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:
Oct. 23, 2012
Filed:
Aug. 18, 2008
Brandon P. Williams, Urbandale, IA (US);
Nathan J. James, Greenville, SC (US);
Brandon P. Williams, Urbandale, IA (US);
Nathan J. James, Greenville, SC (US);
Delavan Inc, West Des Moines, IA (US);
Abstract
A multi-stage check valve includes a valve housing defining an internal valve chamber. A main valve member within the valve chamber of the valve housing has an internal valve chamber. In the first position thereof the main valve member blocks fuel below a predetermined main pressure from flowing through a main fuel path. In the second position thereof the main valve member is displaced to allow fuel above the predetermined main pressure to flow through the main fuel path. The multi-stage check valve also includes a pilot valve member within the valve chamber of the main valve member. In the first position thereof, the pilot valve member blocks fuel below a predetermined pilot pressure from flowing through a pilot fuel path. In the second position thereof, the pilot valve member is displaced to allow fuel above the predetermined pilot pressure to flow through the pilot fuel path.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile