Surgeons headlight with continuously variable spot size
US4104709A · kind A · utility
42Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1977 |
| Grant date | Aug 1, 1978 |
| Priority date | — |
| Expiry date | Apr 11, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/804
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surgeon's headlight utilizing an adjustable iris diaphragm to allow continuous variation of the diameter of the illuminated spot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.