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:
Dec. 31, 2019
Filed:
Oct. 02, 2018
Uchiyama Manufacturing Corp., Okayama, JP;
Koki Ishida, Okayama, JP;
Wakana Kato, Okayama, JP;
UCHIYAMA MANUFACTURING CORP., Okayama, JP;
Abstract
A sealing device for sealing an annular space constituted by an inside member and an outside member which rotate relatively to each other includes a core metal having a cylindrical portion fitted to one of the inside member and the outside member, and a seal lip member fixed to the core metal and having a plurality of lip portions contacting the other of the inside member and the outside member. The lip portions includes a first lip portion provided at a position closest to the outside and blocking ventilation between the outside and a space existing between the lip portions, and another lip portion provided at a position farther from the outside than the first lip portion. The other lip portion is provided with a through-hole, which is open to front and rear surfaces and allow ventilation, at a position apart from a contact portion with the other member.