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:
Jul. 20, 1993
Filed:
Jun. 23, 1992
Mamoru Shibasaka, Yokohama, JP;
Toyo Seikan Kaisha, Limited, Tokyo, JP;
Abstract
A necked-in and flange portion is formed in the open end of a seamless can body by using a can end holder driven for rotation about its axis, an axially movable inner roll of a reduced diameter disposed adjacent the can end holder, and a spinning roll positioned axially stationary outside the can body. While the can body with the open end telescoped onto the can end holder and in contact with the inner roll is rotated together with the can end holder, the spinning roll is advanced toward the can end holder and forced into the open end, and simultaneously the can body is moved in an axial direction away from the can end holder together with the inner roll, to form the necked-in and flange portion.