US3707117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic film assemblage
Assignee: Eastman Kodak Co
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Filing: 1971-02-11
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Granted: 1972-12-26
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Expires: 1991-02-11
Abstract
Abstract A film pack for use in an in-camera processing system comprising a container in which a plurality of individual film units, each including a light-sensitive film and an image-receiving sheet coupled by means including a leader, a pull tab connected to said leader, are arranged in stacked relation so that after the film of each unit is exposed it can be moved into superposed relation with its corresponding image-receiving sheet for processing when the pull tab extending from the container, and camera it is associated with, is pulled. The pull tabs of all of the film units are folded back upon themselves and interleaved with the film units so as to be confined wholly within the container until they are pulled successively therefrom by pulling on the pull tab of the preceding film unit. The pull tab on the first film unit is adhered to a safety cover sheet which is wrapped around the stack of film units to protect them against being fogged during handling of a pack outside of the camera, and is withdrawn from the pack and the camera after the pack is placed in the camera to ready the first film unit for exposure. To permit ready assemblage of the film units, the pull tabs are provided with patches or stripes of a cohesive adhesive material so arranged that the pull tabs become adhesively connected together, and the pull tab of the first film unit becomes adhesively connected to the safety cover sheet, with bonds having the necessary shear and peel strengths by the mere application of pressure to the stack of film units after the pull tabs have been folded back into interleaved relation with the film units.
Inventors
- 👤 Richard D Moulton
- 👤 Stanley R Schieven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:11
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
200 words
A photographic film assemblage adapted for use in a camera, said film assemblage comprising in combination, 1. a plurality of film units arranged in stacked relation, each film unit including a leader for withdrawing the film unit from said stack and a pull tab coupled at one end to said leader for withdrawing said leader from the stack; 2. a container adapted to be inserted in a camera enclosing said stack of film units and having an opening through which said film units are movable in succession and through which the pull tab of only one film unit projects at any one time; 3. the free end of each of the pull tabs of said other film units being folded back upon itself toward the pull tab of the adjacent film unit to an extent such that initially all of the pull tabs lie within the confines of said container and being adhesively connected in face-to-face relation to the pull tab of an adjacent film unit; said adhesive connection comprising a patch of cohesive cement on the surface of at least one of said pull tabs and forming a cohesive bond having a peel strength less than its shear strength.
Claim 2
Dependent Claim
200 words
A photographic film assemblage adapted for use in a camera, said film assemblage comprising in combination, 1. a plurality of film units arranged in stacked relation, each film unit including a leader for withdrawing the film unit from said stack and a pull tab coupled at one end to said leader for withdrawing said leader from the stack; 2. a container adapted to be inserted in a camera enclosing said stack of film units and having an opening through which said film units are movable in succession and through which the pull tab of only one film unit projects at any one time; 3. the free end of each of the pull tabs of said other film units being folded back upon itself toward the pull tab of the adjacent film unit to an extent such that initially all of the pull tabs lie within the confines of said container and being adhesively connected in face-to-face relation to the pull tab of an adjacent film unit; said adhesive connection comprising a patch of cohesive cement on the surface of at least one of said pull tabs and forming a cohesive bond having a peel strength less than its shear strength.
Claim 3
Dependent Claim
44 words
a container adapted to be inserted in a camera enclosing said stack of film units and having an opening through which said film units are movable in succession and through which the pull tab of only one film unit projects at any one time;
Claim 4
Dependent Claim
44 words
a container adapted to be inserted in a camera enclosing said stack of film units and having an opening through which said film units are movable in succession and through which the pull tab of only one film unit projects at any one time;
Claim 5
Dependent Claim
115 words
A photographic assemblage as defined in claim 1, including a safety cover embracing the stack of film units and having a leading end extending through the opening in said container; the end of the pull tab on the film unit immediately adjacent said safety cover being adhered in face-to-face relation with said safety cover by a pressure-sensitive adhesive bond having a shear strength sufficient to withdraw said pull tab from said container as the safety cover is withdrawn from said container but weaker than the connection between said pull tab and the leader to which it is coupled so that withdrawal of the safety cover will not pull the first film unit from the container.
Claim 6
Dependent Claim
37 words
a container enclosing said stack of film units and having an opening through which said film units are movable in succession and through which the pull tab of only one film unit projects at any one time;
Claim 7
Dependent Claim
37 words
a container enclosing said stack of film units and having an opening through which said film units are movable in succession and through which the pull tab of only one film unit projects at any one time;
Claim 8
Dependent Claim
96 words
the free end of each of the pull tabs of said other film units being folded back upon itself toward the pull tab of the adjacent film unit to an extent such that initially all of the pull tabs lie within the confines of said container and being adhesively connected in face-to-face relation to the pull tab of an adjacent film unit; said adhesive connection comprising a patch of cohesive cement on the surface of at least one of said pull tabs and forming a cohesive bond having a peel strength less than its shear strength.
Claim 9
Dependent Claim
96 words
the free end of each of the pull tabs of said other film units being folded back upon itself toward the pull tab of the adjacent film unit to an extent such that initially all of the pull tabs lie within the confines of said container and being adhesively connected in face-to-face relation to the pull tab of an adjacent film unit; said adhesive connection comprising a patch of cohesive cement on the surface of at least one of said pull tabs and forming a cohesive bond having a peel strength less than its shear strength.
Claim 10
Dependent Claim
47 words
the free end of each of the pull tabs of said other film units being folded back upon itself toward the pull tab of the adjacent film unit to an extent such that initially all of the pull tabs lie within the confines of said container, and
Claim 11
Dependent Claim
47 words
the free end of each of the pull tabs of said other film units being folded back upon itself toward the pull tab of the adjacent film unit to an extent such that initially all of the pull tabs lie within the confines of said container, and
Claim 12
Dependent Claim
66 words
A photographic film assemblage as defined in claim 2, wherein the adhesive connection between said safety cover and the pull tab on the film unit immediately adjacent thereto comprises a stripe of cohesive material on each of the safety cover and the end of the pull tab which are brought into face-to-face contact when the pull tab is folded back upon itself toward the safety cover.
Claim 13
Dependent Claim
7 words
A photographic film assemblage comprising in combination,
Claim 14
Dependent Claim
7 words
A photographic film assemblage comprising in combination,
Claim 15
Dependent Claim
92 words
the upper surface of each pull tab having two patches of cohesive material thereon, a first patch being adjacent the end of the pull tab attached to the leader and the second patch being adjacent the free end of the pull tab; the second patch of cohesive material on one pull tab being brought into face-to-face contact with the first patch of cohesive material on the pull tab of the adjacent film unit when folded back upon itself to form a cohesive bond having a peel strength less than its shear strength.
Claim 16
Dependent Claim
92 words
the upper surface of each pull tab having two patches of cohesive material thereon, a first patch being adjacent the end of the pull tab attached to the leader and the second patch being adjacent the free end of the pull tab; the second patch of cohesive material on one pull tab being brought into face-to-face contact with the first patch of cohesive material on the pull tab of the adjacent film unit when folded back upon itself to form a cohesive bond having a peel strength less than its shear strength.
Claim 17
Dependent Claim
68 words
A photographic film assemblage as defined in claim 4, wherein the two patches of cohesive material on each pull tab have a different dimension longitudinally of the pull tab to insure a constant bond strength even if there is some misalignment of the cohesive patches in the longitudinal direction of the pull tabs when one is foldeD back upon itself into face-to-face contact with the one adjacent thereto.
Claim 18
Dependent Claim
66 words
A photographic film assemblage as defined in claim 4, wherein that portion of the surface of the film unit located in superposed relation with said first patch of cohesive on the pull tab of an adjacent unit has a release coating thereon to prevent unwanted blocking of the film units together prior to the time the ends of the pull tabs are folded back against themselves.
Claim 19
Dependent Claim
27 words
A photographic assemblage as defined in claim 6, wherein the cohesive material is polyisoprene and the release coating is an oleamide in a cellulose acetate butyrate binder.
Claim 20
Dependent Claim
70 words
A photographic film assemblage as defined in claim 4, wherein the two patches of cohesive material on each pull tab are narrower than its pull tab width to allow for some lateral misalignment when superposing the folded-back end of one pull tab to an adjacent pull tab without one of the cohesive patches contacting a part of the film unit which is not to be moved with the pull tab.
Claim 21
Dependent Claim
80 words
A photographic film assemblage as defined in claim 4, wherein the first patch of cohesive material on a given pull tab is narrower than the width of the pull tab and/or the second patch of cohesive material to allow for some lateral misalignment when superposing the folded-back end of one pull tab to an adjacent pull tab without one of the cohesive patches contacting a part of a film unit which is not to be moved with the pull tab.
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |