Device for controlling the advance and the positioning of envelopes in an insertion machine
US4903456A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 28, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Nov 28, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43M3/045
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A control device for controlling the advance and the positioning of envelopes in an insertion machine includes a stepper motor (27) coupled in common both to means (20) for transferring empty envelopes towards said insertion station, and to means (40) for transferring filled envelopes to be ejected, and a circuit (70) for controlling and governing the speed of the motor, causing said motor to be driven on the basis of clock signals generated by a clock circuit (62) synchronously with mechanical commands within the machine, and governing the speed of the motor on the basis of defined numbers of motor steps as detected counting from the moment that an envelope ceases to go past an intermediate point on the transfer path, as determined by a detector (29). The invention is applicable to automatic mail processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.