Link-clutch film drive mechanism for panoramic dental X-ray machine
US4247779A · kind A · utility
5Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Mar 29, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/51
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Film drive mechanism for use with a panoramic X-ray machine which provides continuous and discontinuous radiographic images of dental arch areas of a shifting patient. The mechanism utilizes electromagnetic clutches, linkage structures and cams for varying the rotational speed of a film drive shaft in accordance with the mode of radiographing selected, i.e., continuous or discontinuous. The film drive shaft controls rotation of a drum which has the film wrapped therearound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.