Patent US3145250A successfully refreshed from Google Patents.
US3145250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moire fringe constructions including a phase change
Assignee: Bausch and Lomb Inc
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Filing: 1962-03-01
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Granted: 1964-08-18
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Expires: 1982-03-01
Abstract
No abstract record available.
Inventors
- 👤 Leslie O Vargady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:05
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/26; G01D5/32; G01D5/34; G01D5/36; G01D5/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
A MOIRE FRINGE CONSTRUCTION COMPRISING A SUPERIMPOSED PAIR OF LINE GRIDS EACH INCLUDING PARALLEL DARK LINES AND CLEAR INTERVALS, THE LINES OF ONE OF SAID GRIDS DISPOSED AT A SLIGHT ANGLE WITH RESPECT TO THE LINES OF THE OTHER OF SAID GRID TO THEREBY FORM A PREDETERMINED ANGULAR ORIENTATION, MEANS SUPPORTING SAID GRIDS IN THE PREDETERMINED ORIENTATION AND MOVABLE RELATIVE TO EACH OTHER IN A DIRECTION TRANSVERSE TO THE LINE STRUCTURE AND EACH OF SAID GRIDS INCLUDING A REGULAR PATTERN AND A PHASE CHANGE IN SAID PATTERN.
Claim 2
Dependent Claim
87 words
A MOIRE FRINGE CONSTRUCTION COMPRISING A SUPERIMPOSED PAIR OF LINE GRIDS EACH INCLUDING PARALLEL DARK LINES AND CLEAR INTERVALS, THE LINES OF ONE OF SAID GRIDS DISPOSED AT A SLIGHT ANGLE WITH RESPECT TO THE LINES OF THE OTHER OF SAID GRID TO THEREBY FORM A PREDETERMINED ANGULAR ORIENTATION, MEANS SUPPORTING SAID GRIDS IN THE PREDETERMINED ORIENTATION AND MOVABLE RELATIVE TO EACH OTHER IN A DIRECTION TRANSVERSE TO THE LINE STRUCTURE AND EACH OF SAID GRIDS INCLUDING A REGULAR PATTERN AND A PHASE CHANGE IN SAID PATTERN.
Claim 3
Dependent Claim
108 words
A MOIRE FRINGE CONSTRUCTION COMPRISING A SUPERIMPOSED PAIR OF LINE GRIDS EACH INCLUDING PARALLEL SPACED LINES, THE LINES OF ONE OF SAID GRIDS DISPOSED AT A SLIGHT ANGLE WITH RESPECT TO THE LINES OF THE OTHER OF SAID GRIDS TO THEREBY FORM A PREDETERMINED ANGULAR ORIENTATION, AND THE PITCH OF SAID GRIDS BEING GRADIENT IN A DIRECTION TRANSVERSE TO SAID LINES, A PHASE CHANGE IN THE GRADIENT WHEREIN THE PROGRESSIVELY INCREASING LINE WIDTHS CHANGE TO PROGRESSIVELY DECREASING LINE WIDTHS, AND MEANS MOUNTING SAID GRIDS IN RELATIVELY MOVABLE RELATIONSHIP IN A DIRECTION TRANSVERSE TO THE LINE STRUCTURE WHILE MAINTAINING THEIR LINES IN THE PREDETERMINED ANGULAR ORIENTATIONS TO EACH OTHER.
Claim 4
Dependent Claim
108 words
A MOIRE FRINGE CONSTRUCTION COMPRISING A SUPERIMPOSED PAIR OF LINE GRIDS EACH INCLUDING PARALLEL SPACED LINES, THE LINES OF ONE OF SAID GRIDS DISPOSED AT A SLIGHT ANGLE WITH RESPECT TO THE LINES OF THE OTHER OF SAID GRIDS TO THEREBY FORM A PREDETERMINED ANGULAR ORIENTATION, AND THE PITCH OF SAID GRIDS BEING GRADIENT IN A DIRECTION TRANSVERSE TO SAID LINES, A PHASE CHANGE IN THE GRADIENT WHEREIN THE PROGRESSIVELY INCREASING LINE WIDTHS CHANGE TO PROGRESSIVELY DECREASING LINE WIDTHS, AND MEANS MOUNTING SAID GRIDS IN RELATIVELY MOVABLE RELATIONSHIP IN A DIRECTION TRANSVERSE TO THE LINE STRUCTURE WHILE MAINTAINING THEIR LINES IN THE PREDETERMINED ANGULAR ORIENTATIONS TO EACH OTHER.
References Cited (Backward Citations)
US2179000A
Cited
US2945959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |