US3197644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive apparatus for measurement of color density
Assignee: Individual
•
Filing: 1962-12-26
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Granted: 1965-07-27
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Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas J Etzrodt
- 👤 Cullinan Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:32
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/85; G01N21/17; G01N21/25; G01N21/251
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
APPARATUS FOR MEASURING COLOR DENSITY OF AN ARTICLE COMPRISING A LIGHT PROOF HOUSING HAVING A BASE PLATE, SIDE WALL PANELS EXTENDING UPWARDLY FROM SAID LATE, END PANEL SECTIONS EXTENDING UPWARDLY FROM SAID PLATE, A TOP CLOSURE FOR SAID HOUSING INCLUDING A TOP CLOSURE WALL, A PLURALITY OF PHOTOELECTRIC CELLS MOUNTED AT HORIZONTALLY SPACED LOCATIONS ON SAID TOP CLOSURE WALL FOR DELIVERING AN ELECTRICAL CURRENT PROPORTIONAL TO THE LIGHT INCIDENT THEREON, ELONGATED ILLUMINATING SOURCES MOUNTED IN THE LOWER PART OF SAID HOUSING INTERIORLY OF SAID SIDE WALL PANELS, A MOUNTING DEVICE INTERIORLY DISPOSED IN SAID HOUSING FOR EXPOSING THE ARTICLE WHOSE COLOR DENSITY IS TO BE MEASURED IN A LIGHT PATH BETWEEN SAID ILLUMINATING MEANS AND SAID PHOTOELECTRIC CELLS, AND INTERIORLY DISPOSED SCREEN PLATES EXTENDING DOWNWARDLY WITH RESPECT TO SAID TOP CLOSURE WALL AND PROVIDING THE SIDE BOUNDARIES OF A HORIZONTALLY ELONGATED LIGHT TRANSFER PASSAGEWAY.
Claim 2
Dependent Claim
144 words
APPARATUS FOR MEASURING COLOR DENSITY OF AN ARTICLE COMPRISING A LIGHT PROOF HOUSING HAVING A BASE PLATE, SIDE WALL PANELS EXTENDING UPWARDLY FROM SAID LATE, END PANEL SECTIONS EXTENDING UPWARDLY FROM SAID PLATE, A TOP CLOSURE FOR SAID HOUSING INCLUDING A TOP CLOSURE WALL, A PLURALITY OF PHOTOELECTRIC CELLS MOUNTED AT HORIZONTALLY SPACED LOCATIONS ON SAID TOP CLOSURE WALL FOR DELIVERING AN ELECTRICAL CURRENT PROPORTIONAL TO THE LIGHT INCIDENT THEREON, ELONGATED ILLUMINATING SOURCES MOUNTED IN THE LOWER PART OF SAID HOUSING INTERIORLY OF SAID SIDE WALL PANELS, A MOUNTING DEVICE INTERIORLY DISPOSED IN SAID HOUSING FOR EXPOSING THE ARTICLE WHOSE COLOR DENSITY IS TO BE MEASURED IN A LIGHT PATH BETWEEN SAID ILLUMINATING MEANS AND SAID PHOTOELECTRIC CELLS, AND INTERIORLY DISPOSED SCREEN PLATES EXTENDING DOWNWARDLY WITH RESPECT TO SAID TOP CLOSURE WALL AND PROVIDING THE SIDE BOUNDARIES OF A HORIZONTALLY ELONGATED LIGHT TRANSFER PASSAGEWAY.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |