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:
Mar. 24, 2009
Filed:
Jul. 20, 2006
Chad M. Thomas, Algood, TN (US);
Abby True-dahl, Sparta, TN (US);
Peter K. Herman, Cookeville, TN (US);
Mark T. Wieczorek, Cookeville, TN (US);
Mark J. Johnson, Cookeville, TN (US);
Chad M. Thomas, Algood, TN (US);
Abby True-Dahl, Sparta, TN (US);
Peter K. Herman, Cookeville, TN (US);
Mark T. Wieczorek, Cookeville, TN (US);
Mark J. Johnson, Cookeville, TN (US);
Fleetguard, Inc., Nashville, TN (US);
Abstract
A magnetic check valve includes a cage mountable in a fluid flow duct and supporting a plunger movable between a closed position blocking fluid flow past the valve, and an open position permitting fluid flow past the valve. One of the cage and the plunger includes a magnet, and the other of the cage and the plunger includes ferrous material magnetically attracted to the magnet to magnetically bias the plunger to the closed position.