US3576363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cinematographic apparatus
Assignee: Agfa Gevaert AG
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Filing: 1968-04-30
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Granted: 1971-04-27
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Expires: 1988-04-30
Abstract
Abstract A motion picture camera or projector wherein the pulldown of the film transporting mechanism moves from a first to a second position in response to removal of film from the path in which the film is advanced from the supply reel to the takeup reel. The pulldown thereby permits opening of a switch which is connected in circuit with the motor for the pulldown and with the light meter of the exposure control in a camera. The switch closes in automatic response to insertion of a fresh supply of film.
Inventors
- 👤 Anton Theer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:19
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/18; G03B1/20; G03B1/22; G03B7/00; G03B7/26
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
94 words
In a cinematographic apparatus, a combination comprising a housing; guide means provided in said housing and defining a film path; film transporting means including a film transporting member movable in direction towards said film path from a first to a second position in response to removal of film from said path; electric circuit means including switch means; and operating means cooperating with and actuated by said film transporting means and cooperating with and operating said switch means in response to movement of said film transporting member from said second to said first position thereof.
Claim 2
Dependent Claim
94 words
In a cinematographic apparatus, a combination comprising a housing; guide means provided in said housing and defining a film path; film transporting means including a film transporting member movable in direction towards said film path from a first to a second position in response to removal of film from said path; electric circuit means including switch means; and operating means cooperating with and actuated by said film transporting means and cooperating with and operating said switch means in response to movement of said film transporting member from said second to said first position thereof.
Claim 3
Dependent Claim
28 words
A combination as defined in claim 1, wherein said switch means is normally open and comprises an elastic portion which biases said film transporting member to second position.
Claim 4
Dependent Claim
54 words
A combination as defined in claim 1, wherein said switch means comprises a plurality of contacts which tend to be disengaged from each other and wherein said film transporting member is arranged to move said contacts into current-conducting engagement with each other in response to movement from said second to said first position thereof.
Claim 5
Dependent Claim
15 words
A combination as defined in claim 3, wherein the number of said contacts exceeds two.
Claim 6
Dependent Claim
37 words
A combination as defined in claim 1, wherein said film transporting means further comprises electric motor means connected in said circuit means and arranged to actuate said film transporting member in closed position of said switch means.
Claim 7
Dependent Claim
32 words
A combination as defined in claim 1, wherein said apparatus is a motion picture camera having a built-in exposure control and said circuit means further comprises an element of the exposure control.
Claim 8
Dependent Claim
39 words
A combination as defined in claim 1, wherein said film transporting member is a pulldown having a claw which is movable by film from said second to said first position in response to insertion of film into said path.
Claim 9
Dependent Claim
28 words
A combination as defined in claim 1, wherein said switch means comprises at least one elastic contact which permanently biases the film transporting member to said second position.
Claim 10
Dependent Claim
17 words
A combination as defined in claim 1, wherein said guide means defines a path for 8-millimeter film.
Claim 11
Dependent Claim
40 words
A combination as defined in claim 1, wherein said apparatus is a motion picture camera having an exposure control and wherein said circuit means further comprises an element of the exposure control and the motor of said film transporting means.
Claim 12
Dependent Claim
49 words
A combination as defined in claim 1, wherein said switch means has contact means movable by said film transporting member in a first direction and wherein said film transporting means further comprises means for moving said member in a second direction substantially at right angles to said first direction.
Claim 13
Dependent Claim
83 words
A combination as defined in claim 1, wherein said apparatus is a motion picture camera having a built-in exposure control and said circuit means comprises a first branch including an element of the exposure control whose circuit is completed in response to closing of said switch means and a second branch including an electric motor for said film transporting member, said second branch further including master switch means and the circuit of said motor being completed on closing of both said switch means.
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |