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:
Nov. 12, 2019
Filed:
Feb. 06, 2017
Nittan Valve Co., Ltd., Hadano-shi, Kanagawa, JP;
Maiku Mikami, Hadano, JP;
Kazunori Kurahashi, Kanagawa, JP;
Nittan Valve Co., Ltd., Hadano-Shi, Kanagawa, JP;
Abstract
A method for manufacturing a poppet valvefrom an intermediate valve products is disclosed. The intermediate valve products have an intermediate valve head' with a pressing protrusions. A peakof the pressing protrusionsis located in a normal direction Xof the seat surface N, which is positioned on a normal line Xpassing a reference point Pset on a line segment K connecting a base point Pin an inner side and a base point Pin an outer side of the seat surface N; a position of the reference point Pis set such that a relation between a length Lfrom the base point Pto the reference point Pand a length Lfrom the base point Pto the reference point Pmeets a formula of L/L≤0.5.