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:
Dec. 02, 2003
Filed:
Jun. 25, 2002
Todd R. Snyder, Birmingham, AL (US);
Southern Research Institute, Birmingham, AL (US);
Abstract
A full-flow mechanical failsafe ( ) is composed of a cylindrical shell ( ) having a movable sealing plug ( ) therein, for attachment to a filter element ( ) of a fluid filtering system, such as a gas clean up system in a power plant. The sealing plug ( ) rests on locking spheres ( ) within the shell ( ) during normal operation. Upon filter failure or breakage, the flow fluid will be substantially increased, causing an increase in upward pressure against the sealing plug ( ), forcing it upward off the spheres ( ) and into sealing contact with a flow aperture ( ), shutting off fluid flow. The spheres ( ) move downward into a locking position upon movement of the sealing plug ( ), to secure the sealing plug ( ) in its upward sealing position. The failsafe ( ) can be used in fluid flow control systems other than fluid filtering systems, such as oil or gas pipelines, and can be used to prevent improper reverse fluid flow.