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. 10, 1981
Filed:
Nov. 16, 1979
Stephen E Woerz, Florissant, MO (US);
Boise Cascade Corporation, Boise, ID (US);
Abstract
An improved composite container is disclosed including a tubular fibrous body wall having at its upper end a reversely curled portion the upper extremity of which is radially inwardly compressed in such a manner as to form an annular external locking projection by means of which a synthetic plastic closure cap may be fastened to close the container. Preferably the closure member is connected with the container by a tearable tamperproof connection including a radially inwardly directed annular rib that is locked beneath the annular body projection to maintain the closure cap on the container. A method is also disclosed for forming the container body, including the steps of radially outwardly curling the upper end of the body member, radially inwardly comressing the upper extremity of the reversely curled portion, and mounting a synthetic plastic snap-type closure member on the compressed curled end. In one embodiment, a circumferential recess is formed (for example, by skiving) in the outer surface of the tubular fibrous body wall prior to the reverse curling step, whereby the upper extremity of the reversely curled portion is radially inwardly compressed into the recess.