Refillable typewriter ribbon cartridge
US4367963A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1980 |
| Grant date | Jan 11, 1983 |
| Priority date | — |
| Expiry date | Jul 21, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J32/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A protective carton-enclosed typewriter ribbon pancake assembly and associated cartridge frame having a biased-open top are disclosed. The pancake assembly includes a typewriter ribbon pancake spirally wrapped around a supply hub. The ribbon and supply hub are enclosed by a protective paper carton configured for insertion within the cartridge frame. The carton has holes through which the ends of the supply hub pass. The free end of the ribbon is attached to a take-up hub. A used ribbon pancake assembly is disposed of by merely releasing the biased top of the frame so that the used ribbon, protective carton and hubs free fall into an underlying waste receptacle. The carton is shaped to insure proper alignment of the pancake assembly within the cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.