Hinge structure for platen covers
US4114236A · kind A · utility
35Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1977 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Jul 28, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2999/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The hinge structure which permits the platen cover to be forced toward the platen when positioned thereover and which will hold the cover in any desired positon between about 20.degree. and 90.degree. with respect to the platen. The hinge structure comprises a leaf spring on the machine frame which is urged into contact with a cam surface connected to the cover which cam surface in cooperation with the leaf spring provides a torsional force about the cover axis to counterbalance the weight of the cover and a frictional force which will maintain the cover in its desired fixed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.