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. 20, 2010
Filed:
Nov. 29, 2007
Masayoshi Shimizuya, Kanagawa, JP;
Masayoshi Shimizuya, Kanagawa, JP;
NSK Ltd., Tokyo, JP;
Abstract
A structure is realized that can easily identify misassembly of a middle seal lipin a structure that obtains a good seal. A middle seal liplocated between an outside seal lipand an inside seal lipinclines outwards in an axial direction towards its internal edge, being its tip. This tip makes a sliding contact all around the circumference of a cylindrical surfacelocated on an axial intermediate portion of the hub. The sum of a thickness Tin a free state of the middle seal lip, and a thickness ΔT of a portion of a seal member, is greater than a width dimension '(R−D)/2' in a radial direction of a ring shaped gaplocated between an internal edge of a metal coreand the cylindrical surface. In a misassembly state, the seal lipis strongly clamped between the internal edge of the metal coreand the cylindrical surface, resulting in great friction between the middle seal lipand the cylindrical surface, so that the misassembly state can be identified easily.