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:
Jun. 04, 2013
Filed:
Feb. 24, 2010
Applicants:
Sean Donovan, Howell, MI (US);
John A. London, Cornelia, GA (US);
Robert Scavuzzo, Clermont, GA (US);
Inventors:
Sean Donovan, Howell, MI (US);
John A. London, Cornelia, GA (US);
Robert Scavuzzo, Clermont, GA (US);
Assignee:
Freudenberg-NOK General Partnership, Plymouth, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
A dynamic seal advantageously utilizes a plurality of grooves on the active side or surface of the seal to capture a leaked lubricant and hydrodynamically pump the lubricant back into the lubricated side of the seal. The grooves are interrupted at an intermediate location by a continuous circumferential band that aids in preventing leakage past the band when the shaft is not rotating and the grooves on both sides of the band pump contaminants away from the sealing lip.