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:
Sep. 08, 2020
Filed:
Feb. 12, 2018
Applicant:
Nok Corporation, Tokyo, JP;
Inventor:
Masamichi Kishiro, Fukushima, JP;
Assignee:
NOK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/32 (2016.01); F01L 3/08 (2006.01); F16J 15/3232 (2016.01); F16J 15/3212 (2016.01);
U.S. Cl.
CPC ...
F01L 3/08 (2013.01); F16J 15/3232 (2013.01); F16J 15/3212 (2013.01);
Abstract
A valve stem seal hermetically seals a space formed between a valve stem of a valve which establishes and interrupts communication between a cylinder and a port and a valve guide into which the valve stem is inserted in a reciprocally movable manner, wherein the valve stem seal includes: a reinforcing ring formed into an annular shape centered about an axis, and extending in a radial direction of a ring of the reinforcing ring; and an elastic body portion formed into an annular shape centered about the axis, attached to the reinforcing ring, and including a seal lip which abuts on the valve stem.