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:
Dec. 06, 2016
Filed:
Aug. 21, 2014
Applicant:
Totani Corporation, Kyoto, JP;
Inventors:
Yuji Ohnishi, Kyoto, JP;
Shoichi Sawada, Kyoto, JP;
Assignee:
Totani Corporation, Kyoto, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B26D 1/00 (2006.01); B26D 7/18 (2006.01); B26D 1/06 (2006.01); B26F 1/14 (2006.01); B26F 1/38 (2006.01); B26D 7/14 (2006.01); B26F 1/44 (2006.01); B26D 7/00 (2006.01);
U.S. Cl.
CPC ...
B26D 7/1854 (2013.01); B26D 1/0006 (2013.01); B26D 1/065 (2013.01); B26D 7/14 (2013.01); B26F 1/14 (2013.01); B26F 1/3846 (2013.01); B26F 1/44 (2013.01); B26D 2001/006 (2013.01); B26D 2007/0018 (2013.01); Y10T 83/242 (2015.04); Y10T 83/9423 (2015.04);
Abstract
A plastic film punching apparatus is improved to prevent a wastefrom being caught in a cylindrical punch blade. The apparatus includes a punch bladecomprising a saw-toothed edge which includes mountain portions and valley portions formed alternately with each other. A protrusionis disposed internally of the punch bladeto protrude beyond the position of height Hof the bottomsof valley portions and toward the position of height Hof the topsof mountain portions. An annular clearanceis formed between the punch bladeand the protrusion