Method and apparatus for controlling sheets in a hopper
US4531724A · kind A · utility
4Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1984 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | Jan 9, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H3/30
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for controlling sheets in a hopper, whereby the stack of sheets is partially supported at various elevations along the stack so that only a portion of the weight of the stack bears downwardly on the sheet removal devices. The stack support members are movable into and out of supporting position relative to the stack, by virtue of a solenoid or the like, for passing a discrete lower portion of the stack down to the take-off device, and a feeler is provided for sensing the need for passing more sheets downwardly, in accordance with the rate of removing the sheets from the bottom of the stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.