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. 12, 1996
Filed:
Feb. 01, 1994
Sunil B Kulkarni, Portage, MI (US);
Randy R Dingman, Schoolcraft, MI (US);
Durametallic Corporation, Kalamazoo, MI (US);
Abstract
A mechanical seal assembly having a deep groove pattern formed in the face of the rotating seal ring, which groove pattern includes two sets of straight angled deep grooves, the sets being angled in opposite rotational directions to provide pumping of barrier gas into the grooves irrespective of the direction of rotation. The groove pattern also includes a deep annular groove formed in the seal face and communicating with radially inner ends of the angled grooves to facilitate flow of barrier gas into and through the grooves to improve cooling of the seal faces and minimization of contact pressure between the seal faces.