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:
Jun. 30, 1992
Filed:
Dec. 12, 1990
Applicant:
Inventor:
Walter H Henson, Hornchurch, GB;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41F / ;
U.S. Cl.
CPC ...
101232 ; 101 91 ; 101 53 ; 192 215 ; 2671 / ;
Abstract
An article feeding apparatus comprising a driven roller and a pressure roller resiliently urged toward the driven roller. Movement of the pressure roller toward the driven roller is controlled by means of a damper containing material having electro-rheological properties. An electric potential of controlled magnitude is applied selectively to the material to control movement of the pressure roller. The apparatus is described in relation to a print drum and impression roller of a franking machine.