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. 21, 2026
Filed:
Feb. 07, 2023
Nok Corporation, Tokyo, JP;
Yusuke Kamiya, Fukushima, JP;
Masayuki Tanida, Fukushima, JP;
Kokichi Hamamoto, Fukushima, JP;
Hiroka Yamada, Fukushima, JP;
NOK CORPORATION, Tokyo, JP;
Abstract
A sealing device is arranged between two relatively displaceable members containing an object to be sealed, for example, a drive shaft of an electric vehicle, and a housing for the drive shaft. A sealing body made of conductive rubber provided in the sealing device is fixed in a state of contact with the housing by an outer peripheral seal, and brings a sealing surface provided on a conductive lip into surface contact with the drive shaft to seal the object. A grease groove is provided on the sealing surface to retain grease having conductivity. The grease is filled between the drive shaft and the sealing surface, and forms a conducting circuit along with the sealing body which makes the drive shaft acting as an antenna for electromagnetic noise and the housing conductive.