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:
Jan. 25, 2000
Filed:
Jun. 16, 1997
Mikio Tanaka, Tenri-shi, Nara-ken, JP;
Other;
Abstract
A check valve having a function of adjusting a flow rate of a fluid and comprising a flat body composed of a plastic film; and a fluid take-out appliance inserted into a duct of the body. The fluid take-out appliance comprises a guide pipe; a flow pipe longer than the guide pipe and shorter than the body and reciprocatively inserted into the guide pipe; a duct-opening member thin rectangular solid-shaped and provided on the flow pipe at a front end thereof; a gripping flange provided on the flow pipe at a rear end thereof; an inlet provided on the flow pipe; one or more engaging grooves provided on the guide pipe at a front end thereof; and a convexity provided on an outer surface of the flow pipe and engaging the engaging grooves of the guide pipe. In this construction, the fluid take-out appliance is inserted into the duct of the body, with an outer surface of the guide pipe in close contact with the duct of the body at a rear side thereof.