Patent US3749482A successfully refreshed from Google Patents.
US3749482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motion picture film projector
Assignee: G L J TOY CO Inc
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Filing: 1972-01-20
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Granted: 1973-07-31
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Expires: 1992-01-20
Abstract
Abstract A motion picture for projecting different sizes of film has an advancing claw laterally displaceable to line up with the perforations on the different width film strips. A film gate having different sized masking apertures is shiftable longitudinally. The film gate has two laterally spaced guide slots joined by a connecting slot. The film advancing claw is shifted between the guide slots by way of the connecting slot when the film gate is shifted to for accomidating the different sized films.
Inventors
- 👤 D Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:56
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/42; G03B1/48; G03B1/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
140 words
A motion picture film projector for projecting different sizes of film, comprising a mounting structure, an optical system carried by said mounting structure, a film guide mounted by said mounting structure for receiving and guiding film along a path crossng said optical system, and a reciprocatory film advancing member engageable with sprocket holes of film for moving the latter along said path, said advancing member being latterally displaceable for egagement in sprocket holes of different size film, said guide having a plurality of laterally spaced elongate slots for selectively receiving said advancing member for advancing engagement thereof with a particular film sze, said elongate slots being spaced longitudinally of said path and connected by a connecting slot portion, and said guide being shiftably adjustable along said path to transfer said advancing member between said slots through said connecting slot portion.
Claim 2
Dependent Claim
140 words
A motion picture film projector for projecting different sizes of film, comprising a mounting structure, an optical system carried by said mounting structure, a film guide mounted by said mounting structure for receiving and guiding film along a path crossng said optical system, and a reciprocatory film advancing member engageable with sprocket holes of film for moving the latter along said path, said advancing member being latterally displaceable for egagement in sprocket holes of different size film, said guide having a plurality of laterally spaced elongate slots for selectively receiving said advancing member for advancing engagement thereof with a particular film sze, said elongate slots being spaced longitudinally of said path and connected by a connecting slot portion, and said guide being shiftably adjustable along said path to transfer said advancing member between said slots through said connecting slot portion.
Claim 3
Dependent Claim
31 words
A motion picture film projector according to claim 1, said guide having a plurality of different size masking perforations for selective alignment with said optical system to project different size film.
Claim 4
Dependent Claim
167 words
A motion picture film projector for projecting different sizes of film, comprising a mounting structure, an optical system carried by said mounting structure, a film guide mounted by said mounting structure for receiving and guiding film along a path crossing said optical system, and a reciprocatory film advancing member engageable with sprocket holes of film fo moving the latter along said path, said advancing member being laterally displaceable for engagement in sprocket holes of different size film, said guide having a plurality of laterally spaced elongate slots for selectively receiving said advancing member for advancing engagement threof with a particular film size, said guide having a plurality of different size masking perforations spaced longitudinally of said path for selectve alignment with said optical system to project different size film, said elongate slots being spaced longitudinally of said path and connected by a connecting slot portion, and said guide being shiftably adjustable along said path to transfer said advancing member between said slots through said connecting slot portion.
Claim 5
Dependent Claim
167 words
A motion picture film projector for projecting different sizes of film, comprising a mounting structure, an optical system carried by said mounting structure, a film guide mounted by said mounting structure for receiving and guiding film along a path crossing said optical system, and a reciprocatory film advancing member engageable with sprocket holes of film fo moving the latter along said path, said advancing member being laterally displaceable for engagement in sprocket holes of different size film, said guide having a plurality of laterally spaced elongate slots for selectively receiving said advancing member for advancing engagement threof with a particular film size, said guide having a plurality of different size masking perforations spaced longitudinally of said path for selectve alignment with said optical system to project different size film, said elongate slots being spaced longitudinally of said path and connected by a connecting slot portion, and said guide being shiftably adjustable along said path to transfer said advancing member between said slots through said connecting slot portion.
Claim 6
Dependent Claim
89 words
A motion picture film projector according to claim 3, said guide comprising a fixed member carried by said mounting structure and extending transversely of said optical system, and a shiftable member extending longitudinally of said fixed member and shiftable therealong transversely through said optical system, said laterally spaced slots being formed in said shiftable member and spaced longitudinally therealong, and said connecting slot portion merging smoothly with said laterally spaced slots, whereby said advancing member is laterally displaced btween said slots upon longitudinal shifting motion of said shifting member.
Claim 7
Dependent Claim
31 words
A motion picture film projector according to claim 4, said advancing member comprisng a thin resilient flexible arm having a sprocket hole engaging element and deflectable to afford said lateral displcement.
Claim 8
Dependent Claim
23 words
A motion picture film projector according to claim 4, said masking perforations being formed in said shiftable member at spaced locations longitudinally thereof.
Claim 9
Dependent Claim
55 words
A motion picture film projector according to claim 4, in combination with a pressure plate disposed in resilient bearing relation with said shiftable member to urge the latter toward said fixed member, and interfitting detent means on said fixed and shiftable members releasably retaining the latter in a selected position with respect to the former.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |