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:
Mar. 01, 1977
Filed:
Jun. 06, 1975
Applicant:
Inventors:
Assignees:
Nissan Motor Co., Ltd., ALL OF, JA;
Ikeda Bussan Co., Ltd., ALL OF, JA;
Toray Industries, Inc., ALL OF, JA;
Primary Examiner:
Int. Cl.
CPC ...
B31F / ;
U.S. Cl.
CPC ...
156226 ; 156290 ; 229 53 ;
Abstract
A sheet material is initially formed into a flat and quadrilateral bag, the four sides of which are sealed. Each of the front and back sheets of the flat bag is pinched up and folded in two parts at each corner region along a line running through a point placed at a selected distance from the corner such that two imaginary and symmetrical lines drawn on the inner surface of the sheet meeting at this point and terminating respectively at the two adjacent sides of the corner region are overlapped each other, and then a joint is formed in the folded region of the sheet along the overlapped lines.