Patent US3237349A successfully refreshed from Google Patents.
US3237349A
Expired / Lapsed
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Method of lens grinding
Assignee: Bausch and Lomb Inc
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Filing: 1963-01-02
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Granted: 1966-03-01
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Expires: 1983-01-02
Abstract
No abstract record available.
Inventors
- 👤 Kenneth D Faas
- 👤 Schrier Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:35
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/005; B24B13/0052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
THE METHOD FOR GENERATING A MAJOR SURFACE ON A LENS HAVING ONE FINISHED MAJOR SURFACE COMPRISING THE STEPS, ALIGNING THE LENS WITH A FINISHED SURFACE OF THE LENS ENGAGING THE LENS SUPPORTING MEANS OF A LENS BLOCK MOLD WITH THE AXIS OF THE MOLD PASSING THROUGH A POINT DEFINING THE VERTEX OF THE FINISHED SURFACES OF THE LENS, MOLDING A LENS BLOCK ON THE FINISHED SURFACE OF THE LENS WHILE SIMULTANEOUSLY FORMING A REFERENCE SURFACE ON THE LENS BLOCK A PREDETERMINED AXIAL DISTANCE FROM THE VERTEX OF THE FINISHED SURFACE OF THE LENS, PLACING THE BLOCKED LENS IN A PIVOTALLY SUPPORTED CHUCK OF A SURFACE GENERATING MACHINE WITH THE VERTEX OF THE FINISHED SURFACE OF THE LENS DEFINING AN ARC WHEN SAID LENS IS PIVOTED WITH THE CHUCK AND WHICH ARC INCLUDES THE CUTTING SURFACE OF THE GRINDING WHEEL, SETTING THE LOCATION OF THE ARC DEFINED BY THE VERTEX ON THE FINISHED SURFACE OF THE LENS OF PREDETERMINED DISTANCE FROM THE CUTTING SURFACE OF THE GRINDING WHEEL WHICH IS EQUAL TO THE LENS THICKNESS, AND AUTOMATICALLY GENERATING THE SECOND MAJOR SURFACE ON THE LENS TO FORM A LENS OF PREDETERMINED THICKNESS AND OPTICAL CHARACTERISTIC.
Claim 2
Independent Claim
194 words
THE METHOD FOR GENERATING A MAJOR SURFACE ON A LENS HAVING ONE FINISHED MAJOR SURFACE COMPRISING THE STEPS, ALIGNING THE LENS WITH A FINISHED SURFACE OF THE LENS ENGAGING THE LENS SUPPORTING MEANS OF A LENS BLOCK MOLD WITH THE AXIS OF THE MOLD PASSING THROUGH A POINT DEFINING THE VERTEX OF THE FINISHED SURFACES OF THE LENS, MOLDING A LENS BLOCK ON THE FINISHED SURFACE OF THE LENS WHILE SIMULTANEOUSLY FORMING A REFERENCE SURFACE ON THE LENS BLOCK A PREDETERMINED AXIAL DISTANCE FROM THE VERTEX OF THE FINISHED SURFACE OF THE LENS, PLACING THE BLOCKED LENS IN A PIVOTALLY SUPPORTED CHUCK OF A SURFACE GENERATING MACHINE WITH THE VERTEX OF THE FINISHED SURFACE OF THE LENS DEFINING AN ARC WHEN SAID LENS IS PIVOTED WITH THE CHUCK AND WHICH ARC INCLUDES THE CUTTING SURFACE OF THE GRINDING WHEEL, SETTING THE LOCATION OF THE ARC DEFINED BY THE VERTEX ON THE FINISHED SURFACE OF THE LENS OF PREDETERMINED DISTANCE FROM THE CUTTING SURFACE OF THE GRINDING WHEEL WHICH IS EQUAL TO THE LENS THICKNESS, AND AUTOMATICALLY GENERATING THE SECOND MAJOR SURFACE ON THE LENS TO FORM A LENS OF PREDETERMINED THICKNESS AND OPTICAL CHARACTERISTIC.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |