Patent US3174395A successfully refreshed from Google Patents.
US3174395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide-changing device for projectors
Assignee: Braun GmbH
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Filing: 1961-08-10
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Granted: 1965-03-23
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Expires: 1981-08-10
Abstract
No abstract record available.
Inventors
- 👤 Krull Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:41
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B23/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
IN A PHOTOGRAPHIC PROJECTOR, IN COMBINATION, SUPPORT MEANS FOR SUPPORTING A MAGAZINE WHICH CONTAINS SLIDES WHICH ARE TO BE SEQUENTIALLY MOVED FROM THE MAZINE TO A PROJECTING POSITION AND BACK TO THE MAGAZINE; GRIPPING LEVER MEANS TURNABLY CARRIED BY SAID SUPPORT MEANS FOR GRIPPING A SLIDE AT EDGES THEREOF AND TRANSPORTING THE SLIDE, DURING TURNING OF SAID GRIPPING LEVER MEANS, BETWEEN THE MAGAZINE AND THE PROJECTING POSITION, SAID GRIPPING LEVER MEANS CONSISTING OF A PAIR OF LEVERS ONE OF WHICH ENGAGES A SLIDE AT ITS TOP EDGE, WHILE THE SLIDE IS IN WHICH ENGAGES A SLIDE AT ITS TOP EDGE, WHILE THE SLIDE IS IN THE MAGAZINE, AND AT LEAST ONE OF SAID LEVERS ALSO ENGAGING THE SLIDE AT A SIDE EDGE THEREOF WHILE THE SLIDE IS IN THE MAGAZINE, SO THAT SAID ONE LEVER ENGAGES THE SLIDE AT A PAIR OF EDGES WHILE THE OTHER OF SAID LEVERS ENGAGES THE SLIDE AT A THIRD EDGE THEREOF, SAID PAIR OF LEVERS HAVING A COMMON TURNING AXIS AND SAID SUPPORT MEANS SUPPORTING SAID LEVERS ONLY FOR TURNING MOVEMENT ABOUT SAID AXIS; AND TURNING MEANS OPERATIVELY CONNECTED TO SAID GRIPPING LEVER MEANS FOR TURNING THE SAME TO TRANSPORT A SLIDE BETWEEN THE MAGAZINE AND THE PROJECTING POSITION.
Claim 2
Dependent Claim
205 words
IN A PHOTOGRAPHIC PROJECTOR, IN COMBINATION, SUPPORT MEANS FOR SUPPORTING A MAGAZINE WHICH CONTAINS SLIDES WHICH ARE TO BE SEQUENTIALLY MOVED FROM THE MAZINE TO A PROJECTING POSITION AND BACK TO THE MAGAZINE; GRIPPING LEVER MEANS TURNABLY CARRIED BY SAID SUPPORT MEANS FOR GRIPPING A SLIDE AT EDGES THEREOF AND TRANSPORTING THE SLIDE, DURING TURNING OF SAID GRIPPING LEVER MEANS, BETWEEN THE MAGAZINE AND THE PROJECTING POSITION, SAID GRIPPING LEVER MEANS CONSISTING OF A PAIR OF LEVERS ONE OF WHICH ENGAGES A SLIDE AT ITS TOP EDGE, WHILE THE SLIDE IS IN WHICH ENGAGES A SLIDE AT ITS TOP EDGE, WHILE THE SLIDE IS IN THE MAGAZINE, AND AT LEAST ONE OF SAID LEVERS ALSO ENGAGING THE SLIDE AT A SIDE EDGE THEREOF WHILE THE SLIDE IS IN THE MAGAZINE, SO THAT SAID ONE LEVER ENGAGES THE SLIDE AT A PAIR OF EDGES WHILE THE OTHER OF SAID LEVERS ENGAGES THE SLIDE AT A THIRD EDGE THEREOF, SAID PAIR OF LEVERS HAVING A COMMON TURNING AXIS AND SAID SUPPORT MEANS SUPPORTING SAID LEVERS ONLY FOR TURNING MOVEMENT ABOUT SAID AXIS; AND TURNING MEANS OPERATIVELY CONNECTED TO SAID GRIPPING LEVER MEANS FOR TURNING THE SAME TO TRANSPORT A SLIDE BETWEEN THE MAGAZINE AND THE PROJECTING POSITION.
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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |