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US3619047A
Expired / Lapsed
US
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Motion picture camera with film frame counter
Assignee: Agfa Gevaert AG
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Filing: 1969-11-12
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Granted: 1971-11-09
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Expires: 1989-11-12
Abstract
Abstract A frame counter for 8-millimeter motion picture film which comprises two coaxial toothed disks one of which is provided with indicia representing different numbers of film frames and the other of which has alternating deeper and shallower tooth spaces. A pawl is driven by the film-transporting mechanism of the camera to repeatedly index the other disk and to index the one disk only when its pallet extends into a deeper tooth space.
Inventors
- 👤 Karl Neudecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:59
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/43
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
In a photographic apparatus, particularly in motion picture camera for use with 8-millimeter film, a combination comprising a film-transporting assembly operative to transport the film lengthwise; a film frame counter including a plurality of indexible means; and a motion-transmitting device receiving motion from said film-transporting assembly and operative to index at least one of said indexible means in response to each transport of the film by the length of a frame, said indexible means including indicia-bearing first indexible means and second indexible means which is indexible by said motion-transmitting device between a plurality of first and second positions and maintains said motion-transmitting device out of engagement with said first indexible means in said first positions thereof so that said first indexible means is indexed by said motiontransmitting device only in the second positions of said second indexible means.
Claim 2
Dependent Claim
138 words
In a photographic apparatus, particularly in motion picture camera for use with 8-millimeter film, a combination comprising a film-transporting assembly operative to transport the film lengthwise; a film frame counter including a plurality of indexible means; and a motion-transmitting device receiving motion from said film-transporting assembly and operative to index at least one of said indexible means in response to each transport of the film by the length of a frame, said indexible means including indicia-bearing first indexible means and second indexible means which is indexible by said motion-transmitting device between a plurality of first and second positions and maintains said motion-transmitting device out of engagement with said first indexible means in said first positions thereof so that said first indexible means is indexed by said motiontransmitting device only in the second positions of said second indexible means.
Claim 3
Dependent Claim
113 words
A combination as defined in claim 1, wherein said first and second indexible means respectively comprise coaxial first and second rotary members and said motion-transmitting device comprises an output member arranged to perform a predetermined movement in response to each transport of the film by the length of a frame, said first and second rotary members respectively having first and second annuli of projections and said output member being arranged to engage successive projections of said second rotary member in response to successive movements thereof and to engage successive projections of said first rotary member during those movements thereof which take place when said second rotary member assumes one of said second positions.
Claim 4
Dependent Claim
27 words
A combination as defined in claim 2, wherein the number of projections on said second rotary member equals thE number of projections on said first rotary member.
Claim 5
Dependent Claim
60 words
A combination as defined in claim 2, wherein said projections are teeth which are separated by tooth spaces and wherein the tooth spaces of said second rotary member include shallower and deeper spaces, said second rotary member respectively assuming one of said first and second positions when said output member respectively extends into one of said shallower and deeper spaces.
Claim 6
Dependent Claim
18 words
A combination as defined in claim 4, wherein said deeper tooth spaces alternate with said shallower tooth spaces.
Claim 7
Dependent Claim
25 words
A combination as defined in claim 4, wherein the teeth of said second rotary member extend radially beyond the teeth of said first rotary member.
Claim 8
Dependent Claim
35 words
A combination as defined in claim 1, wherein said first and second indexible means respectively comprise first and second rotary toothed disks and wherein said disks are coaxial with and rotatable relative to each other.
Claim 9
Dependent Claim
23 words
A combination as defined in claim 7, further comprising blocking means for normally holding each of said disks against rotation in one direction.
Claim 10
Dependent Claim
19 words
A combination as defined in claim 7, further comprising means for disengaging said blocking means from said first disk.
Claim 11
Dependent Claim
78 words
A combination as defined in claim 7, wherein said motion-transmitting device comprises a pawl having a pallet and means for moving said pallet along a predetermined path in response to each transport of the film by the length of a frame, said disks being adjacent to said path and said pallet engaging successive teeth of said second disk during successive movements thereof and engaging the teeth of said first disk in successive second positions of said second disk.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |