US3120150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide projector
Assignee: Sawyers Inc
•
Filing: 1959-07-03
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Granted: 1964-02-04
•
Expires: 1979-07-03
Abstract
No abstract record available.
Inventors
- 👤 Brown Robert Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:40
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B23/048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A SLIDE PROJECTOR COMPRISING, A HOUSING HAVING A SLIDE-TRAY-RECEIVING GROOVE EXTENDING ALONG ONE SIDE THEREOF, A VIEWING APERTURE ALIGNED WITH THE OPTICAL AXIS OF THE PROJECTOR, A SLIDE CARRIER HAVING A PUSHER ARM FOR PUSHING A SLIDE FROM A SLIDE TRAY DISPOSED IN SAID GROOVE TO A POSITION IN REGISTER WITH SAID VIEWING APERTURE UPON INWARD MOVEMENT THEREOF AND A FLIPPER ARM ENGAGEABLE WITH A SLIDE FOR RETURNING SAME TO THE SLIDE TRAY UPON OUTWARD MOVEMENT THEREOF, AND AN ABUTMENT MEMBER ASSOCIATED WITH SAID VIEWING APERTURE AND ADAPTED TO BE ENGAGED BY ONE END OF SAID FLIPPER MEMBER DURING A PORTION OF THE OUTWARD MOVEMENT OF THE SLIDE CARRIER WHEREBY THE OTHER END OF THE FLIPPER MEMBER IS PIVOTED TOWARD THE SLIDE TRAY TO RETURN A SLIDE TO THE SLIDE TRAY AT A RATE OF MOVEMENT GREATER THAN THE CORRESPONDING OUTWARD RATE OF MOVEMENT OF SAID SLIDE CARRIER.
Claim 2
Dependent Claim
148 words
A SLIDE PROJECTOR COMPRISING, A HOUSING HAVING A SLIDE-TRAY-RECEIVING GROOVE EXTENDING ALONG ONE SIDE THEREOF, A VIEWING APERTURE ALIGNED WITH THE OPTICAL AXIS OF THE PROJECTOR, A SLIDE CARRIER HAVING A PUSHER ARM FOR PUSHING A SLIDE FROM A SLIDE TRAY DISPOSED IN SAID GROOVE TO A POSITION IN REGISTER WITH SAID VIEWING APERTURE UPON INWARD MOVEMENT THEREOF AND A FLIPPER ARM ENGAGEABLE WITH A SLIDE FOR RETURNING SAME TO THE SLIDE TRAY UPON OUTWARD MOVEMENT THEREOF, AND AN ABUTMENT MEMBER ASSOCIATED WITH SAID VIEWING APERTURE AND ADAPTED TO BE ENGAGED BY ONE END OF SAID FLIPPER MEMBER DURING A PORTION OF THE OUTWARD MOVEMENT OF THE SLIDE CARRIER WHEREBY THE OTHER END OF THE FLIPPER MEMBER IS PIVOTED TOWARD THE SLIDE TRAY TO RETURN A SLIDE TO THE SLIDE TRAY AT A RATE OF MOVEMENT GREATER THAN THE CORRESPONDING OUTWARD RATE OF MOVEMENT OF SAID SLIDE CARRIER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |