Lens surfacing machine
Abstract
Abstract MACHINE FOR GRIDING DOWN AND POLISHING OPHTHALMIC LENSES, IN WHICH THE MOVEMENTS OF THE TOOL ON THE LENS SURFACE ARE OBTAINED BY MEANS OF SPINDLES DRIVEN FOR TRANSLATIONAL MOTION BY AN ARM EXERTING SEPARATELY THE TOO PRESSURE ON THE LENS, CHARACTERIZED IN THAT EACH SPINDLE SUPPORTED BY A FIXED UNIVERSAL JOINT RECEIVES THE MOVEMENTS OF TWO ECCENTRICS DRIVEN FROM SEPARATE MOTORS HAVING PARALLEL OUTPUT SHAFTS, EITHER DIRECTLY, IN WHICH CASE THE SPINDLE ARM IS DRIVEN BY THE FIRST ECCENTRIC REVOLVING IN THE OTHER ECCENTRIC, OR THROUGH THE MEDIUM OF PERPENDICULAR CONNECTING-RODS SECURED TO THE SPINDLE ARM BY MEANS OF A UNIVERSAL JOINT, AND THAT THE TOOL CONTROL ARM IS ACTUATED BY AN ACTUATOR MOUNTED ON DAMPING DEVICES AND SO PIVOTED THAT THE TOOL DESIGNED FOR SURFACING A TOROIDAL SURFACE HAS ITS EQUATOR CONSTANTLY MAINTAINED IN A FIXED DIRECTION.
Inventors
- 👤 Luc Tagnon
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |