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Mechanical seal having a single-piece, perforated mating ring

United States Patent

August 7, 2007
View the Complete Patent at the US Patent & Trademark Office
A mechanical seal (e.g., single mechanical seals, double mechanical seals, tandem mechanical seals, bellows, pusher mechanical seals, and all types of rotating and reciprocating machines) with reduced contact surface temperature, reduced contact surface wear, or increased life span. The mechanical seal comprises a rotating ring and a single-piece, perforated mating ring, which improves heat transfer by controllably channeling coolant flow through the single-piece mating ring such that the coolant is in substantially uniform thermal contact with a substantial portion of the interior surface area of the seal face, while maintaining the structural integrity of the mechanical seal and minimizing the potential for coolant flow interruptions to the seal face caused by debris or contaminants (e.g., small solids and trash) in the coolant.
Khonsari; Michael M. (Baton Rouge, LA), Somanchi; Anoop K. (Fremont, CA)
Board of Supervisors of Louisiana State University and Agricultural and Mechanical College (Baton Rouge, LA), N/A (
10/ 987,352
November 12, 2004
The development of this invention was partially funded by the Government under grant number DE-FG48-02R810707, from the United States Department of Energy. The Government has certain rights in this invention.