Document separating apparatus and method
US4416449A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1981 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Dec 9, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H3/5292
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A document separation device for separating documents in a stack employs counter-rotating drum and friction belt members to strip away and hold back more than a single document trying to pass between them. The structure employs a pair of friction drums and a free-wheeling pulley between them of slightly smaller diameter but on the same axis. Counter-rotating friction stripper belt is supported between two pulleys one of which is driven and is wrapped over the pulley between the friction drum members. A third rotatable pulley between the two supporting the friction belt is located opposite the free-wheeling pulley and has flanges which bear upon the friction drum surfaces such that the friction belt will normally not contact the third pulley when the friction belt is in direct contact with the idler between the friction drums. The friction belt is slightly slack. When a document passes between the belt and the friction drums, it moves the third pulley against the action of the tensioning means and causes the friction belt which is stretchable and resilient to become more taut. If the document is stiff it becomes further extended and the tautness is increased still further by the thi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.