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. 04, 1982
Filed:
May. 02, 1980
Maurice F Holmes, Brighton, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A method and apparatus for selectively increasing the effective frictional force between a retard member and a feed member by making both the feed member and retard member from conductive elastomers, and providing a source of electrical potential to produce an electrical potential between them. A sensor is located downstream of the retard member that will sense a multi-feed of sheets between the pad and retard member. The sensor effects the production of electrical potential thereby increasing the friction between the two members and causing separation of the multi-feed of sheets. The potential is then removed and the frictional forces returned to the original level.