Device for controlling an individual separation of sheets incorrectly separated from a sheet pile
US5348286A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1993 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Sep 20, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2553/30
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Device for controlling an individual separation of sheets incorrectly separated from a sheet pile, including a lifting device for lifting an uppermost sheet of the sheet pile so as to feed it to a machine associated therewith, includes a structure having parts of a contactless measuring arrangement insertable between the lifted sheet and the remainder of the sheet pile for measuring the thickness of the lifted sheet, and a circuit arrangement connected to the lifting device and the measuring arrangement for evaluating signals of the measuring arrangement regarding a presence of double or multiple sheets and generating a switching signal for starting or stopping the operation of the lifting device, the structure being formed as a bifurcated contact foot having two legs and a scanning gap defined therebetween, each of the legs, respectively, including parts of the measuring arrangement for measuring the sheet thickness and, in a measuring position of the measuring arrangement, one of the legs being inserted between the lifted uppermost sheet, at a marginal region thereof, and the sheet pile remainder, the other of the legs being disposed above the lifted sheet, and the sheet being re…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.