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. 15, 2016
Filed:
Nov. 01, 2012
Piolax, Inc., Yokohama-shi, JP;
Kenta Mihara, Yokohama, JP;
PIOLAX, INC., Yokohama-Shi, Kanagawa, JP;
Abstract
A valve unit includes a housing which has a partition wall in which an opening portion is formed, a float valve which is disposed within a valve chamber Rthereof, and a check valve which is disposed within a valve chamber R. A valve seat is provided on a lower surface side of the partition wall, and plural radially-extending thin ribs are formed therearound. Plural axially-extending check valve guide ribs are provided at predetermined circumferential intervals with in the vent chamber Rand plural axially-extending float valve guide ribs are provided at predetermined circumferential intervals within the valve chamber R. The thin ribs and the check valve guide ribs are formed circumferentially alternately so as not to be superposed on each other when viewed from an axial direction of the housing.