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:
Jan. 22, 1991
Filed:
Sep. 27, 1989
Applicant:
Inventor:
Harold E Paulson, Dunwoody, GA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ;
U.S. Cl.
CPC ...
271-2 ; 271-5 ; 271-9 ; 271 99 ; 271108 ; 271107 ;
Abstract
A device for feeding envelopes or similar work pieces to a printing press or the like utilizes a vacuum chamber mounted on a reciprocably driven roller for removing the lowermost envelope out of a stack of envelopes in a hopper and advancing it to a carrier for conveyance to the printing press. The vacuum is fed to the vacuum drum through an elongated passageway along the axis of the roller and a valve at the input of the vacuum at one end of the roller reciprocates with the roller to open and close the vacuum passageway. Also, a pusher lug is provided to assist in removing heavier stock from the hopper.