Method to process spectacle lens blanks
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 5, 2017
Issued Date -
N/A
app pub date -
Feb 26, 2013
filing date -
Feb 27, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Manufacturing spectacle lenses using lens blanks blocked onto holding elements is laborious and time-consuming. Furthermore the manufacture is rendered difficult by different surface curvatures on the receiving side of the lens blanks. The purpose of the invention is to remedy such drawbacks. Accordingly this invention relates to equipment for processing lens blanks comprising a workpiece turret supported rotatably about a main axis of rotation, said turret being fitted with at least two workpiece receptacles configured each outside the main axis of rotation and being rotatable about spindle axes, each workpiece receptacle comprising a workpiece receiving surface having a surface curvature rotationally symmetrical about the spindle axis, whereby said surface curvatures of the workpiece receiving surfaces being different from each other.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2013 Application Filing Year
- B23Q Class
- 473 Applications Filed
- 407 Patents Issued To-Date
- 86.05 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B23Q Class
- 31.14 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 5, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 5, 2029 |
