Typing device of flexible laminae with guide means and visibility
US3983985A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1974 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | May 31, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J1/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A typing device comprises a character-bearing disc having a central part for being fixed on a selector shaft and a peripheral rim with a plurality of selectable flexible laminae. Each lamina carries a particular character and striking means flexes the selected lamina to strike against a typing point of a sheet carrying platen for typing. A positioning element, for angular positioning the characters with respect to the typing point, comprises a recess cooperating with a wedge-shaped profile of each one of the selected laminae when the character strikes on said platen. The laminae carry alphabetic and numerical characters and a gap on periphery of the disc enables the last typed characters of a typing line to be seen and read. Further a hooked element cooperates with an elastic means of a flange integral with the selector shaft to removably fix the character bearing disc to the selector shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.