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:
May. 28, 1991
Filed:
Feb. 28, 1990
Applicant:
Inventors:
Thomas H Schumacher, Downers Grove, IL (US);
Ronald L Nelson, Hanover Park, IL (US);
Assignee:
WPC Machinery Corporation, Downers Grove, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41F / ;
U.S. Cl.
CPC ...
101366 ; 101365 ; 101349 ;
Abstract
An ink supply system that is operable to precisely provide ink to a transfer roll by means of positively pumping ink to an absorbent medium adjacent to a ductor wheel at a programmably controlled rate and to bring the ductor wheel into and out of contact with a transfer cylinder also at a programmably controlled rate.