Patent US3130637A successfully refreshed from Google Patents.
US3130637A
Expired / Lapsed
US
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Slide projector
Assignee: Sawyers Inc
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Filing: 1961-05-22
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Granted: 1964-04-28
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Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Golden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:28
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B23/048; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18944; Y10T74/18992
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
IN A SLIDE PROJECTOR HAVING A RECIPROCAL SLIDE CARRIER FOR TRANSFERRING SLIDES BETWEEN A SLIDE TRAY AND A SLIDE VIEWING APERTURE AND CHARACTERIZED BY AN UPSTANDING PLATE MEMBER AT ITS INNER END, THE IMPROVEMENT WHICH COMPRISES, A PROJECTING HOOK MEMBER MOUNTED ON THE UPSTANDING PLATE MEMBER, ROTARY DRIVING MEANS, A PLANETARY GEAR SYSTEM OPERABLY CONNECTED TO SAID DRIVING MEANS, A DRIVE PIN ATTACHED TO A PLANET GEAR OF SAID GEAR SYSTEM AND HAVING A HORIZONTALLY RECIPROCABLE PATH OF MOVEMENT TOWARD AND AWAY FROM THE SLIDE VIEWING APERTURE, SAID DRIVE PIN BEING DISPOSED IN HOOKED ENGAGEMENT WITH SAID HOOK MEMBER DURING ITS MOVEMENT AWAY FROM THE SLIDE APERTURE WHEREBY TO PULL THE SLIDE CARRIER FROM ITS OUTERMOST POSITION INTO ITS INNERMOST POSITION AND THEREBY TRANSFER A SLIDE FROM A SLIDE TRAY TO A POSITION IN CENTERED ALIGNMENT WITH THE SLIDE APERTURE, AND MEANS FOR AUTOMATICALLY DISENGAGING THE HOOK MEMBER FROM SAID DRIVE PIN UPON THE SLIDE CARRIER REACHING ITS INNERMOST POSITION, SAID DRIVE PIN BEING ENGAGEABLE WITH THE EDGE OF SAID PLATE MEMBER DURING ITS MOVEMENT TOWARD THE SLIDE APERTURE WHEREBY TO RETURN THE SLIDE CARRIER TO ITS OUTERMOST POSITION.
Claim 2
Dependent Claim
189 words
IN A SLIDE PROJECTOR HAVING A RECIPROCAL SLIDE CARRIER FOR TRANSFERRING SLIDES BETWEEN A SLIDE TRAY AND A SLIDE VIEWING APERTURE AND CHARACTERIZED BY AN UPSTANDING PLATE MEMBER AT ITS INNER END, THE IMPROVEMENT WHICH COMPRISES, A PROJECTING HOOK MEMBER MOUNTED ON THE UPSTANDING PLATE MEMBER, ROTARY DRIVING MEANS, A PLANETARY GEAR SYSTEM OPERABLY CONNECTED TO SAID DRIVING MEANS, A DRIVE PIN ATTACHED TO A PLANET GEAR OF SAID GEAR SYSTEM AND HAVING A HORIZONTALLY RECIPROCABLE PATH OF MOVEMENT TOWARD AND AWAY FROM THE SLIDE VIEWING APERTURE, SAID DRIVE PIN BEING DISPOSED IN HOOKED ENGAGEMENT WITH SAID HOOK MEMBER DURING ITS MOVEMENT AWAY FROM THE SLIDE APERTURE WHEREBY TO PULL THE SLIDE CARRIER FROM ITS OUTERMOST POSITION INTO ITS INNERMOST POSITION AND THEREBY TRANSFER A SLIDE FROM A SLIDE TRAY TO A POSITION IN CENTERED ALIGNMENT WITH THE SLIDE APERTURE, AND MEANS FOR AUTOMATICALLY DISENGAGING THE HOOK MEMBER FROM SAID DRIVE PIN UPON THE SLIDE CARRIER REACHING ITS INNERMOST POSITION, SAID DRIVE PIN BEING ENGAGEABLE WITH THE EDGE OF SAID PLATE MEMBER DURING ITS MOVEMENT TOWARD THE SLIDE APERTURE WHEREBY TO RETURN THE SLIDE CARRIER TO ITS OUTERMOST 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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |