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:
Jul. 25, 2000
Filed:
Mar. 20, 1998
William N Keifer, Sugar Grove, IL (US);
Stephen J Pierz, Peoria, IL (US);
Gregory M Wetterich, Newark, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A sealing arrangement for sealing lubricating oil in and debris out of a final drive of an earth moving machine is disclosed. The sealing arrangement includes a secondary seal for use in severe environments to protect a primary oil seal. The secondary seal is disposed radially outboard of the primary seal and includes a continuous annular ring having a wear resistant reinforced composite sealing portion. The sealing portion is constructed of a cured mix of an elastomer and reinforcing fibers, having an axial sealing face positionable in dynamic sealing contact with a radial surface of a first member of the final drive.