Patent US3722828A successfully refreshed from Google Patents.
US3722828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cinematographic apparatus for use with cassettes for motion picture film
Assignee: Agfa Gevaert AG
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Filing: 1971-05-10
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Granted: 1973-03-27
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Expires: 1991-05-10
Abstract
Abstract A motion picture projector wherein the top wall of the housing supports a detachable upright duct for a stack of horizontal film-containing cassettes. The lowermost cassette of the stack dwells in a projection position in which the film can be automatically withdrawn from such cassette to be threaded through the projector and attached to the core of the takeup reel. An automatic rewinding unit rewinds the film onto the supply reel in the cassette occupying the projection position, and such cassette is thereupon expelled from projection position by a pusher to enter a detachable collecting receptacle. The lowermost cassette of the stack in the duct descends by gravity and occupies the projection position when the pusher returns to its retracted position. The guide means wherein the film passes from the supply reel in the cassette occupying the projection position to the takeup reel in the housing of the projector has a channel which twists the film through 90*.
Inventors
- 👤 R Kremp
- 👤 F Hennig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:52
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/321; G03B21/323
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
137 words
In a motion picture projector for use with film-containing cassettes, a combination comprising a housing defining a first space for reception of one film-containing cassette at a time whereby the cassette which is received in said space occupies a predetermined projection position; a confining container separably connectable to said housing and defining a second space for storage of spare cassettes, said second space constituting an extension of said first space when said container is connected to said housing to allow for direct transfer of a spare cassette from said second space into said first space upon removal of a cassette from said first space and guide means for the film which is being withdrawn from a cassette occupying said projection position, said guide means comprising a channel for twisting the film through an angle of substantially 90*.
Claim 2
Dependent Claim
137 words
In a motion picture projector for use with film-containing cassettes, a combination comprising a housing defining a first space for reception of one film-containing cassette at a time whereby the cassette which is received in said space occupies a predetermined projection position; a confining container separably connectable to said housing and defining a second space for storage of spare cassettes, said second space constituting an extension of said first space when said container is connected to said housing to allow for direct transfer of a spare cassette from said second space into said first space upon removal of a cassette from said first space and guide means for the film which is being withdrawn from a cassette occupying said projection position, said guide means comprising a channel for twisting the film through an angle of substantially 90*.
Claim 3
Dependent Claim
14 words
A combination as defined in claim 1, wherein said container is an upright duct.
Claim 4
Dependent Claim
22 words
A combination as defined in claim 1, wherein the cassette which occupies said projection position is located in a substantially horizontal plane.
Claim 5
Dependent Claim
25 words
A combination as defined in claim 1, further comprising transfer means provided on said housing and operative to expel a cassette from said projection position.
Claim 6
Dependent Claim
37 words
A combination as defined in claim 4, wherein said transfer means comprises a pusher which is reciprocable in a substantially horizontal plane to thereby expel a cassette from said first space while moving in a predetermined direction.
Claim 7
Dependent Claim
30 words
A combination as defined in claim 1, wherein said container is an upright duct which is arranged to accommodate and to at least partially surround a stack of superimposed cassettes.
Claim 8
Dependent Claim
34 words
A combination as defined in claim 6, further comprising transfer means for expelling cassettes from said projection position and a receptacle for collecting the thus expelled cassettes, said receptacle being provided on said housing.
Claim 9
Dependent Claim
15 words
A combination as defined in claim 7, wherein said receptacle is detachable from said housing.
Claim 10
Dependent Claim
101 words
In a motion picture projector for use with film-containing cassettes, a combination comprising a housing; a confining container connected with said housing and defining a space for reception and gravitational descent of cassettes to a predetermined projection position; guide means for the film which is being withdrawn from a cassette occupying said projection position, said guide means comprising a channel for twisting the film through an angle of substantially 90*; and a film gate mounted in said housing and located in a substantially vertical plane, said channel of said guide means being arranged to twist the film upstream of said gate.
Claim 11
Dependent Claim
101 words
In a motion picture projector for use with film-containing cassettes, a combination comprising a housing; a confining container connected with said housing and defining a space for reception and gravitational descent of cassettes to a predetermined projection position; guide means for the film which is being withdrawn from a cassette occupying said projection position, said guide means comprising a channel for twisting the film through an angle of substantially 90*; and a film gate mounted in said housing and located in a substantially vertical plane, said channel of said guide means being arranged to twist the film upstream of said gate.
Claim 12
Dependent Claim
103 words
In a motion picture projector for use with film-containing cassettes, a combination comprising a housing; a confining container connected with said housing and defining a space for reception and gravitational descent of cassettes to a predetermined projection position; guide means for the film which is being withdrawn from a cassette occupying said projection position, said guide means comprising a channel for twisting the film through an angle of substantially 90* and said channel defining a relatively wide passage for motion picture film, said passage having a pair of relatively narrow marginal portions for the edge portions of film which passes through said channel.
Claim 13
Dependent Claim
103 words
In a motion picture projector for use with film-containing cassettes, a combination comprising a housing; a confining container connected with said housing and defining a space for reception and gravitational descent of cassettes to a predetermined projection position; guide means for the film which is being withdrawn from a cassette occupying said projection position, said guide means comprising a channel for twisting the film through an angle of substantially 90* and said channel defining a relatively wide passage for motion picture film, said passage having a pair of relatively narrow marginal portions for the edge portions of film which passes through said channel.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |