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. 18, 1980
Filed:
Aug. 09, 1978
Tetsuya Tada, Tokyo, JP;
Masaharu Amari, Onoda, JP;
Canyon Corporation, Tokyo, JP;
Abstract
A manually operated sprayer which comprises a pump mechanism including a secondary valve having a valve body normally pressed against a valve seat by a compression spring and valve-sealing means designed temporarily to obstruct the flow of a liquid even after the valve body slides in liquidtightness along the inner wall of a tubular piston and is released from the valve seat, and wherein the valve-sealing means of the secondary valve is integrally formed with the valve body, and slides in liquidtightness along the inner wall the tubular piston for a prescribed distance to be brought into an annular groove formed in the inner wall of the tubular piston, thereby taking the form of a skirt-like strip to be released from the liquidtight condition.