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:
May. 06, 2025
Filed:
Mar. 09, 2022
Ishizaki Co., Ltd., Tokyo, JP;
ISHIZAKI CO., LTD., Tokyo, JP;
Abstract
The check valve includes: an inlet pipe body part () which includes an inflow port (); an outlet pipe body part () which includes an outflow port (); a mobile body (a reciprocative body ()). Insides of the inlet pipe body part, the outlet pipe body part, and the valve body () are communicated to form a curved flow path from the inflow port toward the outflow port. The reciprocative body includes a valve element (). The seat () is arranged so as to be capable of supporting the valve element and the inflow port and the seat are arranged parallel to each other. An inner wall surface () on an outside-corner side of the flow path in the inlet pipe body part is formed so as to curve toward a side of the outlet pipe body part as a position gets closer from the inflow port to the seat.