Impression control apparatus for typewriters
US3957150A · kind A · utility
2Cited by
7References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1975 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Jan 8, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A drive system for an electric typewriter has a power roll driven by an electric motor through a drive belt and a pulley rotatably mounted and resiliently connected to the power roll. The driving energy transmitted to the type action of the machine is controlled by energy-absorbing means adjustably connected to the power roll pulley and controlled through appropriate linkage by the machine operator to vary the energy absorbed by the resilient connection between the power roll and the pulley. A self adjusting means is also provided to set the proper tension on the drive belt of the drive system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.