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. 13, 1986
Filed:
Nov. 30, 1983
Yoshio Kawai, Musashino, JP;
Kiyoshi Kitagawa, Komae, JP;
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A pinch valve device comprising a nipping element having a pair of nipping portions adapted to be brought nearer to and apart from each other and to nip a resilient tube therebetween when brought nearer with each other to thereby close a passage in the tube, and a stop element adapted to stop at least one of the nipping portions, tended to be apart from each other by the resilient repulsion of the resilient tube, at a predetermined spacing allowing to close the passage in the resilient tube when the nipping portions are brought nearer to each other than the predetermined spacing against the resilient repulsion of the resilient tube can surely close the passage in the resilient tube and reduce the degradation of the tube.