Ribbon cassette with releasable locking mechanism
US4605325A · kind A · utility
17Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1985 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | May 28, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J33/52
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A ribbon cassette incorporates a locking mechanism which acts to prevent both rotational spool movement and axial displacement or "treeing" of the coils of ribbon wound on a single flange supply spool prior to mounting for use in a typewriter. The locking mechanism is automatically released when the cassette is mounted for use in a typewriter or like machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.