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. 28, 2010
Filed:
Jun. 06, 2007
Applicants:
Thomas Steigerwald, Chicago, IL (US);
Michael Kalodimos, Morton Grove, IL (US);
Douglas Volden, Park Ridge, IL (US);
Inventors:
Thomas Steigerwald, Chicago, IL (US);
Michael Kalodimos, Morton Grove, IL (US);
Douglas Volden, Park Ridge, IL (US);
Assignee:
John Crane Inc., Morton Grove, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 15/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A mechanical end face seal with a pair of annular relatively rotating seal face defining seal rings. An annular compression contact ring disposed in surrounding relation to one of the seal rings includes a plurality of pads at asymmetrical locations in interference contact with the outer cylindrical surface of the ring.