Method and stereoscopic optical apparatus for determining the roughness of the surfaces of machined parts
Abstract
Abstract A method and apparatus for stereoscopically determining the roughness of the surfaces of machined parts. A stereoscopic viewing means is provided for presenting to the operator stereoscopic images of the surface of a machined part, and simultaneously stereoscopic images of gauge surfaces, so that a comparison of the surface of the machined part with the surface of the gauges can be made. A projecting means is provided for projecting to the stereoscopic viewing means an image of the machined surface which is to be checked, while a pair of projecting means coact with a pair of gauges to project separate images thereof respectively to a pair of ocular means of the stereoscopic viewing means so that in this way images of the gauges are provided for the operator to be viewed simultaneously with the stereoscopic images of the surface of the machined part.
Inventors
- 👤 Liviu Iliescu
- 👤 Ion Drago
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |