US3159077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film frame viewer with adjustable gate assembly
Assignee: Dukane Corp
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Filing: 1962-04-02
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Granted: 1964-12-01
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 John F Hoag
- 👤 Robert H Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:30
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
IN A FILM FRAME VIEWER HAVING A LIGHT SOURCE PROVIDING A BEAM OF LIGHT GOING TO A VIEWING SCREEN, A GATE ASSEMBLY FOR HOLDING A FILM FRAME IN AN ADJUSTABLE POSITION FOR DISPOSING ANY DESIRED PART OF SAID FILM FRAME IN THE LIGHT PATH FOR VIEWING, SAID GATE ASSEMBLY INCLUDING A PLATE FOR FIXED MOUNTING ON SAID VIEWER, SAID PLATE HAVING A WINDOW IN THE LIGHT PATH FOR DEFINING A FILM FRAME AREA TO BE VIEWED, AT LEAST ONE MOVABLE PLATE, MEANS CARRIED BY SAID MOVABLE PLATE FOR SUPPORTING SAID FILM FRAME THEREON, SAID MOVABLE PLATE HAVING A WINDOW, SAID SECOND NAMED WINDOW BEING LARGER THAN SAID FIRST NAMED WINDOW AND BEING IN THE LIGHT PATH TO ACCOMMODATE THE ENTIRE FILM FRAME, AND MEANS FOR MOUNTING SAID MOVABLE PLATE ON SAID STATIONARY PLATE TO PERMIT SAID MOVABLE PLATE TO MOVE PERPENDICULAR TO THE LIGHT PATH OVER A RANGE GREAT ENOUGH TO DISPOSE ANY DESIRED PART OF THE FILM FRAME IN THE LIGHT PATH, SAID MOUNTING MEANS INCLUDING AT LEAST ONE PIN CARRIED BY ONE PLATE AND EXTENDING THROUGH AN ENLARGED CLEARANCE WINDOW IN THE OTHER PLATE AND A SPRING PRESSED WASHER CARRIED BY SAID
Claim 2
Dependent Claim
194 words
IN A FILM FRAME VIEWER HAVING A LIGHT SOURCE PROVIDING A BEAM OF LIGHT GOING TO A VIEWING SCREEN, A GATE ASSEMBLY FOR HOLDING A FILM FRAME IN AN ADJUSTABLE POSITION FOR DISPOSING ANY DESIRED PART OF SAID FILM FRAME IN THE LIGHT PATH FOR VIEWING, SAID GATE ASSEMBLY INCLUDING A PLATE FOR FIXED MOUNTING ON SAID VIEWER, SAID PLATE HAVING A WINDOW IN THE LIGHT PATH FOR DEFINING A FILM FRAME AREA TO BE VIEWED, AT LEAST ONE MOVABLE PLATE, MEANS CARRIED BY SAID MOVABLE PLATE FOR SUPPORTING SAID FILM FRAME THEREON, SAID MOVABLE PLATE HAVING A WINDOW, SAID SECOND NAMED WINDOW BEING LARGER THAN SAID FIRST NAMED WINDOW AND BEING IN THE LIGHT PATH TO ACCOMMODATE THE ENTIRE FILM FRAME, AND MEANS FOR MOUNTING SAID MOVABLE PLATE ON SAID STATIONARY PLATE TO PERMIT SAID MOVABLE PLATE TO MOVE PERPENDICULAR TO THE LIGHT PATH OVER A RANGE GREAT ENOUGH TO DISPOSE ANY DESIRED PART OF THE FILM FRAME IN THE LIGHT PATH, SAID MOUNTING MEANS INCLUDING AT LEAST ONE PIN CARRIED BY ONE PLATE AND EXTENDING THROUGH AN ENLARGED CLEARANCE WINDOW IN THE OTHER PLATE AND A SPRING PRESSED WASHER CARRIED BY SAID
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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |