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. 03, 2025
Filed:
Mar. 15, 2023
Amsted Rail Company, Inc., Chicago, IL (US);
Linas Maskaliunas, Vancouver, WA (US);
Brian Ford, Moseley, VA (US);
AMSTED RAIL COMPANY, INC., Chicago, IL (US);
Abstract
A hydrodynamic sealing element for a radial shaft seal includes a radial flange leg encircling a rotation axis and an oblique flange leg encircling the rotation axis and joined to the radial flange leg. The oblique flange leg extends both radially inward and axially away from the radial flange leg to form an oblique angle relative to the radial flange leg. The oblique flange leg has an air-side surface and an end face that meet at a lip. The oblique flange forms a plurality of hydrodynamic indentations that extend into the oblique flange leg from the air-side surface. The sealing element may be formed from leather, in which case the indentations may be created by debossing the leather. The sealing element may be inserted into a seal case to create a radial shaft seal.