US3355342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of supporting lens blanks for grinding and polishing
Assignee: Signet Optical Corp
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Filing: 1965-02-26
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Granted: 1967-11-28
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Expires: 1985-02-26
Abstract
No abstract record available.
Inventors
- 👤 Robert K Lanman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:30
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/005; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
THAT METHOD OF SUPPORTING SEMI-FINISHED LENS WHILE GRINDING AND POLISHING THE UNFINISHED FACE THEREOF WHICH METHOD COMPRISES, PLACING A PLURALITY OF THIN FLEXIBLE SPACERS AT SPACED POINTS AGAINST THE UPWARDLY FACING SURFACE OF A LENS BLOCK INWARDLY OF THE RIM THEREOF, PLACING A QUANTITY OF FLUENT ADHESIVE IN THE CENTER OF THE LENS BLOCK ADEQUATE TO PROVIDE A LAYER OF DISTRIBUTED ADHESIVE AS THICK AS SAID SPACERS OVER THE UPPER SURFACE OF SAID LENS BLOCK, LOWERING A BLANK LENS ONTO SAID ADHESIVE WITH THE FINISHED SURFACE THEREOF FACING DOWNWARDLY, PRESSING SAID LENS BLANK FIRMLY TOWARD SAID SPACER ELEMENTS TO DISTRIBUTE SAID ADHESIVE THROUGHOUT THE THIN SPACE BETWEEN SAID LENS BLANK FIRMLY TOWARD SAID SPACER ELEMENTS TO DISTRIBUTE SAID ADHESIVE THROUGHOUT THE THIN SPACE BETWEEN SAID LENS BLANK AND SAID LENS BLOCK, ALOWING SAID ADHESIVE TO TAKE A SET BEFORE PROCEEDING TO FINISH GRIND THE EXPOSED UPPER SURFACE OF THE ADHESIVELY ANCHORD LENS BLANK.
Claim 2
Dependent Claim
153 words
THAT METHOD OF SUPPORTING SEMI-FINISHED LENS WHILE GRINDING AND POLISHING THE UNFINISHED FACE THEREOF WHICH METHOD COMPRISES, PLACING A PLURALITY OF THIN FLEXIBLE SPACERS AT SPACED POINTS AGAINST THE UPWARDLY FACING SURFACE OF A LENS BLOCK INWARDLY OF THE RIM THEREOF, PLACING A QUANTITY OF FLUENT ADHESIVE IN THE CENTER OF THE LENS BLOCK ADEQUATE TO PROVIDE A LAYER OF DISTRIBUTED ADHESIVE AS THICK AS SAID SPACERS OVER THE UPPER SURFACE OF SAID LENS BLOCK, LOWERING A BLANK LENS ONTO SAID ADHESIVE WITH THE FINISHED SURFACE THEREOF FACING DOWNWARDLY, PRESSING SAID LENS BLANK FIRMLY TOWARD SAID SPACER ELEMENTS TO DISTRIBUTE SAID ADHESIVE THROUGHOUT THE THIN SPACE BETWEEN SAID LENS BLANK FIRMLY TOWARD SAID SPACER ELEMENTS TO DISTRIBUTE SAID ADHESIVE THROUGHOUT THE THIN SPACE BETWEEN SAID LENS BLANK AND SAID LENS BLOCK, ALOWING SAID ADHESIVE TO TAKE A SET BEFORE PROCEEDING TO FINISH GRIND THE EXPOSED UPPER SURFACE OF THE ADHESIVELY ANCHORD LENS BLANK.
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |