Patent US3146667A successfully refreshed from Google Patents.
US3146667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide projector with slide preselection means
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1962-05-23
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Granted: 1964-09-01
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Expires: 1982-05-23
Abstract
No abstract record available.
Inventors
- 👤 Mulch Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:23
CPC Classifications
G; G03; G03B; G03B23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A SLIDE PROJECTOR, AN AUTOMATIC SLIDE CHANGING MECHANISM, MEANS FOR TRANSPORTING A SLIDE MAGAZINE IN SAID PROJECTOR IN FORWARD AND REVERSE DIRECTIONS, MEANS OPERATIVELY CONNECTED TO SAID TRANSPORTING MEANS FOR INDICATING THE POSITION OF A SLIDE MAGAZINE IN SAID PROJECTOR AND INCLUDING A SELECTIVELY POSITIONABLE PRESELECTOR SWITCH, POWER MEANS DRIVINGLY ENGAGEABLE WITH SAID TRANSPORTING MEANS, AN OPERATOR ROD, AND MEANS ACTUATED BY SAID OPERATOR ROD AND RESPONSIVE TO THE POSITION OF SAID PRESELECTOR SWITCH FOR DRIVINGLY ENGAGING SAID POWER MEANS TO SAID TRANSPORTING MEANS TO MOVE A SLIDE MAGAZINE INTO POSITION TO PROJECT A SLIDE CORRESPONDING TO THE POSITION OF SAID PRESELECTOR SWITCH.
Claim 2
Dependent Claim
104 words
IN A SLIDE PROJECTOR, AN AUTOMATIC SLIDE CHANGING MECHANISM, MEANS FOR TRANSPORTING A SLIDE MAGAZINE IN SAID PROJECTOR IN FORWARD AND REVERSE DIRECTIONS, MEANS OPERATIVELY CONNECTED TO SAID TRANSPORTING MEANS FOR INDICATING THE POSITION OF A SLIDE MAGAZINE IN SAID PROJECTOR AND INCLUDING A SELECTIVELY POSITIONABLE PRESELECTOR SWITCH, POWER MEANS DRIVINGLY ENGAGEABLE WITH SAID TRANSPORTING MEANS, AN OPERATOR ROD, AND MEANS ACTUATED BY SAID OPERATOR ROD AND RESPONSIVE TO THE POSITION OF SAID PRESELECTOR SWITCH FOR DRIVINGLY ENGAGING SAID POWER MEANS TO SAID TRANSPORTING MEANS TO MOVE A SLIDE MAGAZINE INTO POSITION TO PROJECT A SLIDE CORRESPONDING TO THE POSITION OF SAID PRESELECTOR SWITCH.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |