US3704942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic film-loading projector
Assignee: Yokogawa Electric Corp
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Filing: 1971-03-05
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Granted: 1972-12-05
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Expires: 1991-03-05
Abstract
Abstract An automatic film-loading projector including means for automatically effecting all loading operations, including leading a cartridge selected from a plurality of stored film cartridges into a predetermined position in the projector, and actuating the projector to automatically project a picture on the film in the cartridge.
Inventors
- 👤 Satoshi Tsunoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:04
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/56; G03B21/00; G03B21/14; G03B21/32
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
An automatic film-loading projector including elements for defining a film path arranged and positioned circumferentially about a circle comprising: guide rollers, a pair of upper and lower film feed sprocket rollers, an aperture plate, and sound regeneration means; and a film carrier arm rotatable about the center of the circle, a nipper for gripping the leading end portion of a film, said nipper comprising a fixed plate and a movable plate, a resilient member adapted to move said movable plate toward said fixed plate so as to grip and hold a free end portion of the film between said plates, drive means for imparting a circumferential speed to the free end of said carrier arm which is less than the film feed rate of said sprocket rollers to provide for the formation of upper and lower film loop portions, whereby each revolution of said film carrier arm by means of said drive means facilitates engagement of the film with said elements for defining the film path.
Claim 2
Dependent Claim
166 words
An automatic film-loading projector including elements for defining a film path arranged and positioned circumferentially about a circle comprising: guide rollers, a pair of upper and lower film feed sprocket rollers, an aperture plate, and sound regeneration means; and a film carrier arm rotatable about the center of the circle, a nipper for gripping the leading end portion of a film, said nipper comprising a fixed plate and a movable plate, a resilient member adapted to move said movable plate toward said fixed plate so as to grip and hold a free end portion of the film between said plates, drive means for imparting a circumferential speed to the free end of said carrier arm which is less than the film feed rate of said sprocket rollers to provide for the formation of upper and lower film loop portions, whereby each revolution of said film carrier arm by means of said drive means facilitates engagement of the film with said elements for defining the film path.
Claim 3
Dependent Claim
77 words
An automatic film-loading projector according to claim 1, comprising a mechanism for adjusting the relationship between the upper film loop portion and the lower film loop portion, said mechanism including means for preventing rotation of said lower sprocket roller for a short period of time, said elements including a cam claw being maintained in actuated state by said means during said time after the free end of said film carrier arm has passed said lower sprocket roller.
Claim 4
Dependent Claim
68 words
An automatic film-loading projector according to claim 1, comprising a film guide roller arranged adjacent to said aperture plate, said guide roller having a flange portion and a roller portion independently rotatable relative to each other so as to prevent lateral displacement of the film at the film loop portions and to minimize friction between the flange portion of said roller and the edge portion of the film.
Claim 5
Dependent Claim
140 words
The combination of an automatic film-loading projector, according to claim 2, and of a detachable cartridge comprising a hold mechanism including a latch pin to be engaged with a hole formed in the leading end portion of film withdrawn from a film supply reel in said cartridge and at least two guide rollers for supporting the leading end portion of the film so that the leading end portion extends along a portion of the circle around which the film path defining elements are arranged, the leading end portion of the film being arranged so as to be gripped by the nipper as the arm is rotated and so as to be positively secured by said nipper simultaneously with disengagement of the latch pin from the hole formed in the leading end portion of the film during rotation of said arm.
Claim 6
Dependent Claim
88 words
A film cartridge co-operable with an automatic film-loading projector according to claim 1, in which a film supply reel is wound with continuous film the leading end portion of which is formed with a hole to receive an upright pin of the film nipper, a holding mechanism engageable with the hole formed in the leading end portion of the film, a film take-up reel, means for releasing the film from said nipper, and means for attaching the leading end portion of the film to said film take-up reel.
Claim 7
Dependent Claim
49 words
A film cartridge according to claim 5, in which said holding mechanism and said means for attaching the leading end portion of the film to the take-up reel are automatically disposed circumferentially along the circle by attaching the cartridge to a predetermined operative part of the automatic film loader.
Claim 8
Dependent Claim
158 words
In an automatic film-loading projector comprising film path defining elements including a guide roller, a damping roller, sprocket rollers, an aperture plate, a cam claw and sound regenerating means arranged circumferentially about a circle, and a film carrier arm rotatably supported at the center of the circle for carrying the leading end portion of the film and to engage the film with said film path defining elements automatically as it is rotated circumferentially, the imProvement comprising a nipper for gripping the leading end portion of the film, said nipper including a film pulling plate secured to the free end of said film carrier arm and a movable plate pivotally mounted on the arm and resiliently biased towards said film pulling arm, said film pulling plate having an upright pin adapted to extend through a hole formed in said movable plate and through a hole provided at the leading end portion of a film for clamping between said plates.
Claim 9
Dependent Claim
158 words
In an automatic film-loading projector comprising film path defining elements including a guide roller, a damping roller, sprocket rollers, an aperture plate, a cam claw and sound regenerating means arranged circumferentially about a circle, and a film carrier arm rotatably supported at the center of the circle for carrying the leading end portion of the film and to engage the film with said film path defining elements automatically as it is rotated circumferentially, the imProvement comprising a nipper for gripping the leading end portion of the film, said nipper including a film pulling plate secured to the free end of said film carrier arm and a movable plate pivotally mounted on the arm and resiliently biased towards said film pulling arm, said film pulling plate having an upright pin adapted to extend through a hole formed in said movable plate and through a hole provided at the leading end portion of a film for clamping between said plates.
References Cited (Backward Citations)
US1097483A
Cited
US2678820A
Cited
US3081668A
Cited
US3227387A
Cited
US3333783A
Cited
US3405882A
Cited
US3421673A
Cited
US3469907A
Cited
US3490837A
Cited
US3588238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |