Patent · US Expired

Sheet-extracting device with a cassette for receiving a stack of sheets

US5938189A · kind A · utility

4Cited by

9References

1Claims

0Family size

Assignee

Siemens Nixdorf Informationssysteme AG · DE

Inventors

Gunter Holland-Letz · Hirschhorn, DE
Peter Weigel · Borchen, DE
Waldemar Jager · Paderborn, DE

Key dates

Filing date	Mar 10, 1998
Grant date	Aug 17, 1999
Priority date	—
Expiry date	Mar 10, 2018

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H2557/2423
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

The invention relates to a sheet-extracting device with a cassette for receiving a stack of sheets, and to a method of controlling the pressing force of the stack of sheets against the extracting device. The latter has extracting rollers (16) which are arranged on a floating shaft (34). For its part, the floating shaft (34) is centrally connected in a rationally fixed manner to a drive shaft (18) passing through it. The drive shaft (18) is mounted, by one end (20), in a frame-mounted bearing (21) and, by its other end (62), in a displaceable bearing (64). Acting on the bearing (64) is a force sensor (70, 74, 76) which is intended for determining the pressing force of the stack of sheets (12) against the extracting rollers (16). The pressing force is controlled such that it always moves within a narrow middle range between a minimum and a maximum possible value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.