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:
May. 01, 2012
Filed:
Nov. 11, 2009
Andrew J. Borowski, Palos Park, IL (US);
Alex V. Degutis, LaGrange Park, IL (US);
David A. Oestermeyer, Downers Grove, IL (US);
Andrew J. Borowski, Palos Park, IL (US);
Alex V. Degutis, LaGrange Park, IL (US);
David A. Oestermeyer, Downers Grove, IL (US);
Salco Products, Inc., Lemont, IL (US);
Abstract
A gasket for a railroad car manway nozzle and cover includes an inner leg portion and an outer leg portion joined by a generally planar annular body portion defining an upper annular cover sealing surface and a lower annular nozzle body sealing surface. Concentric annular chevrons are formed on the upper and lower annular sealing surfaces. In one form, the chevrons have a uniform height relative to the upper and lower sealing surfaces. In a modified form, the height of the chevrons varies relative to the surfaces from which they extend. The height of the chevrons is a minimum where the gasket is radially aligned with cover clamping bolts and a maximum at radial locations midway between clamping bolts. A tab depending from the outer leg portion provides visual verification of the presence of the gasket.