US3413060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide projector with shutter
Assignee: Robert Bosch Elektronik und Photokino GmbH
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Filing: 1966-05-02
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Granted: 1968-11-26
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Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Rube Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:31
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B23/048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A SLIDE PROJECTOR, A PROJECTION GATE; A TRANSFER UNIT FOR TRANSPORTING SLIDES BETWEEN A MAGAZINE AND SAID PROJECTION GATE; A SHUTTER MOVABLE BETWEEN OPEN AND CLOSED POSITIONS AND NORMALLY ASSUMING SAID CLOSED POSITION TO BLANK THE LIGHT BEAM FROM THE VIEWING SCREEN WHEN THERE IS NO SLIDE IN SAID PROJECTION GATE; MOTION TRANSMITTING MEANS NORMALLY COOPERATING WITH SAID TRANSFER UNIT FOR MOVING SAID SHUTTER TO OPEN POSITION IN RESPONSE TO TRANSFER OF A SLIDE INTO SAID PROJECTION GATE; AND CONTROL MEANS FOR SELECTIVELY IDLING SAID MOTION TRANSMITTING MEANS SO THAT THE SHUTTER REMAINS IN CLOSED POSITION WHILE SAID TRANSFER UNIT TRANSPORTS AT LEAST ONE SLIDE INTO SAID PROJECTION GATE.
Claim 2
Dependent Claim
110 words
IN A SLIDE PROJECTOR, A PROJECTION GATE; A TRANSFER UNIT FOR TRANSPORTING SLIDES BETWEEN A MAGAZINE AND SAID PROJECTION GATE; A SHUTTER MOVABLE BETWEEN OPEN AND CLOSED POSITIONS AND NORMALLY ASSUMING SAID CLOSED POSITION TO BLANK THE LIGHT BEAM FROM THE VIEWING SCREEN WHEN THERE IS NO SLIDE IN SAID PROJECTION GATE; MOTION TRANSMITTING MEANS NORMALLY COOPERATING WITH SAID TRANSFER UNIT FOR MOVING SAID SHUTTER TO OPEN POSITION IN RESPONSE TO TRANSFER OF A SLIDE INTO SAID PROJECTION GATE; AND CONTROL MEANS FOR SELECTIVELY IDLING SAID MOTION TRANSMITTING MEANS SO THAT THE SHUTTER REMAINS IN CLOSED POSITION WHILE SAID TRANSFER UNIT TRANSPORTS AT LEAST ONE SLIDE INTO SAID PROJECTION GATE.
References Cited (Backward Citations)
US2748653A
Cited
US3336836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |