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:
Aug. 22, 1995
Filed:
May. 14, 1993
Charles M Miller, Seven Valleys, PA (US);
Mark W Westerdale, Millersville, MD (US);
David J Tilles, Baltimore, MD (US);
John O Kurtz, Laurel, MD (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
Apparatus for separating individual flat articles of random thickness from one end of a stack of such articles and delivering separated articles, on command, to a transport device. Included in the apparatus is a pick-off device having a friction surface drivable in a direction of article delivery and oriented to engage an exposed surface on one article at the one end of the stack and advance the one article in the direction of delivery, an anti-doubling device for restricting advancing movement of other articles by the pick-off device, a delivery device having a drivable friction nip for pulling a separated article from the pick-off device in the direction of article delivery, and a control system for operating the pick-off device and the delivery device to position each separated article in the friction nip in readiness for delivery, on command, to the transport device. The anti-doubling device is a friction roller supported for movement between a first position of contact with the friction surface of the pick-off device and a second position separated from the friction surface of the pick-off device by the thickness of an article advanced from the one end of the stack. A constant slip torque is imposed on the friction roller independent of friction roller speed, by a magnetic hysteresis device.