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:
Apr. 17, 1990
Filed:
May. 26, 1989
Applicant:
Inventor:
Dennis Couturier, Washburn, WI (US);
Assignee:
C. G. Bretting Manufacturing Co. Inc., Ashland, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B31D / ;
U.S. Cl.
CPC ...
493472 ; 493359 ; 493368 ; 493471 ; 493475 ; 493365 ;
Abstract
An improvement for use in machinery for interfolding porous cut sheets is disclosed having two adjacent and counter-rotating folding rolls each having projecting tuckers and recessed grippers arranged alternately on the folding rolls such that a tucker on one roll mates with a gripper on the other. Porous cut sheets are selectively adhered to the folding rolls by vacuum ported to the tuckers and grippers.