Control circuit for single revolution means
US4936568A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1989 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Feb 8, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00669
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a machine including driving apparatus and structure for feeding a sheet through and from the machine, and wherein the machine includes structure for sensing a sheet, an improvement comprising: a rotary timing cam; an actuating member movable into and out of locking engagement with the cam; a source of supply of d.c. power; a circuit for controlling the driving apparatus, the circuit including a trip switch actuatable in response to the sensing structure sensing a sheet fed to the machine; the driving apparatus responsive to actuation of the trip switch for causing the actuating member to move out of locking engagement with the cam and then causing the cam to rotate; and the circuit including structure for disabling the trip switch for a predetermined time period after the driving apparatus commences rotating the cam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.