Drive system for rotary printing apparatus including improved means for locking and unlocking the apparatus
US4876959A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1989 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Feb 8, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00524
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a machine including rotary structure for printing indicia on a sheet fed to the machine, wherein the machine includes apparatus for driving the rotary printing structure, wherein the driving apparatus includes a drive gear having a home position, wherein driving apparatus includes a locking member movable into and out of locking engagement with the drive gear when the drive gear is in its home position, and wherein the machine includes trip structure for sening a sheet fed to the machine, an improvement comprising: an actuating member for moving the locking member into and out of locking engagement with the drive gear; apparatus for controlling the actuating member, the controlling apparatus including resilient structure for urging the actuating member to move the locking member into and out of locking engagement with the drive gear; and the trip structure including structure for normally latching the controlling apparatus for preventing the resilient structure from moving the actuating member to move the locking member out of locking engagement with the drive gear, and the latching structure unlatching the controlling means for permitting the resilient means to move the actuati…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.