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. 17, 2016
Filed:
Mar. 19, 2013
Universal Can Corporation, Tokyo, JP;
Masahiro Hosoi, Sunto-gun, JP;
UNIVERSAL CAN CORPORATION, Tokyo, JP;
Abstract
A manufacturing method for a screw-threaded bottle-can including the steps of: forming a shoulder part, a pipe part, a tapered part and an aperture-end part above a trunk part; and forming a screw-thread part by an inner mold and an outer mold in which the pipe part is sandwiched therebetween. An outer diameter of the pipe part is formed to an intermediate diameter between a ridge diameter and a bottom diameter of the screw-thread part. The screw-thread part is formed from the tapered part to the pipe part so as to form a screw-starting part at an intermediate position of the tapered part. A height of a first step of a right-hand screw-type protrusion of the inner mold is formed to be lower than a height of a second and subsequent steps in an angle range of 90° circumferentially continuing from the screw-starting part.