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. 25, 2014
Filed:
May. 22, 2012
Applicant:
Marvin J. Halfen, Hastings, MN (US);
Inventor:
Marvin J. Halfen, Hastings, MN (US);
Assignee:
Smead Manufacturing Company, Hastings, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 37/06 (2006.01); B29C 65/00 (2006.01); B29C 65/78 (2006.01);
U.S. Cl.
CPC ...
B29C 66/003 (2013.01); B29C 65/787 (2013.01); B29C 66/472 (2013.01); B29C 66/8161 (2013.01); B32B 37/06 (2013.01);
Abstract
A method and apparatus for the attachment of file fastener to a backboard is disclosed. Backboard, usually pressboard is resistant to attachment by hot melt glue. This problem is overcome by providing deflector for increasing the heat retention angled to provide a chimney effect, pressing the fastener at its tangs toward the heating element, and providing an elastic anvil and hammer which distribute force over a longer period of time.