US3587195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical surface generating method
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1968-04-08
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Granted: 1971-06-28
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Expires: 1988-04-08
Abstract
Abstract OUS PATH PRODUCES ONE OF THE UNIFORM DECREMENTS UPON EACH TRAVERSAL ACROSS AN INDIVIDUAL SURFACE AREA. THE LAP IS CONTROLLED SUCH THAT ITS TRAVEL PATH EXHIBITS A PREFERENCE MOVEMENT FROM AN OCCUPIED AREA TO ADJACENT AREAS STILL REQUIRING THE GREATEST NUMBER OF MATERIAL DECREMENTS. A METHOD WHEREIN AN OPTICAL BLANK WORK SURFACE IS FIGURATIVELY DIVIDED INTO AN ARRAY OF ADJOINING SURFACE AREAS AND MEASURED TO DETERMINE THE TOTAL RELATIVE NUMBER OF UNIFORMLY SIZED BLANK MATERIAL DECREMENTS THAT ARE REQUIRED IN EACH SURFACE AREA TO PRODUCE A DESIRED SURFACE CONTOUR. AN OPTICAL LAP MOVING ACROSS THE WORK SURFACE IN AN IRREGULAR CONTINU-
Inventors
- 👤 Ronald Aspden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:52
CPC Classifications
B; B23; B23Q; B23Q15/00; B24; B24B; B24B13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |