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:
Mar. 20, 2018
Filed:
Apr. 11, 2013
Nittan Valve Co., Ltd., Hadano-shi, Kanagawa, JP;
Osamu Tsuneishi, Kanagawa, JP;
Atsuyuki Ichimiya, Kanagawa, JP;
NITTAN VALVE CO., LTD., Kanagawa, JP;
Abstract
A hollow poppet valve () having an improved heat transfer capability is provided. The valve has an internal cavity (S), extending from within a valve head () into a stem () of the valve, is loaded with a coolant () together with an inert gas. The coolant in the valve head () is stirred by swirl flows of the coolant generated during reciprocal motions of the valve. A multiplicity of swirl-forming protrusions are formed on at least on one of the bottom and the ceiling of the valve head cavity (S) in such a way that swirl flows (F, F) of coolant are generated by the protrusions in the valve head cavity (S) during reciprocal motions of the valve to thereby stir the coolant in the circumferential direction of the cavity (S).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile