Pulley for driving a high performance printer
US4945828A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1987 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Jan 12, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J1/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A pulley for connecting a driven device, that is sensitive to speed variations, to be driven by an a.c. motor that is susceptible to speed variations, caused by power line disturbances. The pulley has a peripheral drive surface for a belt drive and two side surfaces through which an opening is formed to receive a drive shaft that is turned by the a.c. motor. One of the sides of the pulley has a slot formed therein with surfaces on each side of the slot. A resilient material of a preselected Durometer value is positioned within the slot and contiguous with at least one of the surfaces in the slot, against which an element projecting from the drive shaft acts to turn the pulley. During a momentary slowdown in the motor speed, the projecting element moves away from the resilient material and permits the momentum of the driven device to maintain its speed while the motor recovers its speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.