Control circuit for single revolution means
US4905980A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1989 |
| Grant date | Mar 6, 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 sensing a sheet fed to the machine; 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 first circuit connected across the power supply and including a solenoid and a trip switch actuatable for energizing the solenoid; a second circuit connected across the power supply and including a d.c. motor and a motor switch actuatable for energizing and deenergizing the motor; and the trip switch actuated in response to the sensing structure sensing a sheet fed to the machine, and the driving apparatus causing the actuating member to move out of locking engagement with the cam and actuate the motor switch for energizing the motor to drive the cam when the solenoid is energized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.