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. 09, 2021
Filed:
Jun. 22, 2018
Pigeon Corporation, Tokyo, JP;
PIGEON CORPORATION, Tokyo, JP;
Abstract
[Problem] To provide a check-valve in which the occurrence of damage such as tearing, deformation, etc., can be suppressed. [Solution] A check-valve opens and closes an opening provided in a main body and prevents a backflow of a fluid passing through the opening; and the check-valve includes a base partwhich is flexible, and a valve partwhich opens and closes the opening, has a thickness thinner than a thickness of the base part, and is connected to the base partin a state in which a periphery of the valve partis surrounded with the base part. The valve partseals the opening in a normal state of the valve partbeing pre-urged toward the main body by an elasticity of the base part, and opens the opening when the fluid passes through the opening in one direction.