US3811634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge stripping
Assignee: Eastman Kodak Co
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Filing: 1972-03-15
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Granted: 1974-05-21
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Expires: 1992-03-15
Abstract
Abstract A method and device for use in removing from a cartridge a strip of film that is interwound with a strip of backing material. The invention obviates the need for breaking open or otherwise mutilating the cartridge and, instead, contemplates withdrawing the backing material through a cartridge exposure aperture to, in turn, withdraw the film strip by contact with the backing material.
Inventors
- 👤 E Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:10
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/001
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
170 words
The method of extracting a web strip from a cartridge, said cartridge including a chamber defined in part by a curved wall and having a chamber access opening, said web strip being interwound with a backing strip to form a roll housed within said chamber, said web strip having a trailing end disposed within said chamber, said cartridge further defining an exposure aperture adjacent said chamber access opening, said aperture having a width at least as great as the respective widths of said web strip and said backing strip, said backing strip having a trailing end portion extending from said roll, through said access opening and into said exposure aperture, said method comprising the steps of: a. dislodging said backing material strip from said exposure aperture; b. engaging said trailing end portion of said backing strip; and c. displacing said backing strip with respect to said chamber to withdraw said backing strip from said chamber, thereby to extract said web strip from said chamber through contact with said backing strip.
Claim 2
Independent Claim
170 words
The method of extracting a web strip from a cartridge, said cartridge including a chamber defined in part by a curved wall and having a chamber access opening, said web strip being interwound with a backing strip to form a roll housed within said chamber, said web strip having a trailing end disposed within said chamber, said cartridge further defining an exposure aperture adjacent said chamber access opening, said aperture having a width at least as great as the respective widths of said web strip and said backing strip, said backing strip having a trailing end portion extending from said roll, through said access opening and into said exposure aperture, said method comprising the steps of: a. dislodging said backing material strip from said exposure aperture; b. engaging said trailing end portion of said backing strip; and c. displacing said backing strip with respect to said chamber to withdraw said backing strip from said chamber, thereby to extract said web strip from said chamber through contact with said backing strip.
Claim 3
Dependent Claim
61 words
The invention of claim 1 wherein said cartridge further defines a passageway within said chamber and in communication with said access opening and wherein said trailing end of said web strip is left disposed within said passageway, whereby while withdrawing said backing strip from said chamber said web strip does not contact the internal surface of the wall defining said chamber.
Claim 4
Dependent Claim
58 words
The invention of claim 1 wherein said exposure aperture is further defined by a support wall generally opposing said segment of said trailing end portion of said backing material, said wall having formed therein a window, and including the additional step of: passing dislodging means through said window to position said backing strip segment away from said wall.
Claim 5
Independent Claim
156 words
The method of extracting a strip of film from a cartridge of the type including spaced supply and takeup chambers having respective chamber access openings, said cartridge having means for defining a passageway within said takeup chamber and in communication with said takeup chamber access opening, said film strip being superimposed upon and interwound with a strip of backing material to form a roll, said roll being housed within said takeup chamber and said film strip having a trailing end portion extending from said roll and terminating within said passageway, said backing strip having a trailing end portion extending from said roll through said passageway and said access openings and terminating within said supply compartment, said method comprising the steps of: a. engaging said trailing end portion of said backing material and b. withdrawing said backing material from said takeup chamber to extract said film strip from said takeup chamber through contact with said backing strip.
Claim 6
Independent Claim
156 words
The method of extracting a strip of film from a cartridge of the type including spaced supply and takeup chambers having respective chamber access openings, said cartridge having means for defining a passageway within said takeup chamber and in communication with said takeup chamber access opening, said film strip being superimposed upon and interwound with a strip of backing material to form a roll, said roll being housed within said takeup chamber and said film strip having a trailing end portion extending from said roll and terminating within said passageway, said backing strip having a trailing end portion extending from said roll through said passageway and said access openings and terminating within said supply compartment, said method comprising the steps of: a. engaging said trailing end portion of said backing material and b. withdrawing said backing material from said takeup chamber to extract said film strip from said takeup chamber through contact with said backing strip.
Claim 7
Dependent Claim
92 words
The invention of claim 4 wherein said cartridge further includes channel means for interconnecting said supply and takeup chambers at areas adjacent said respective chamber access openings and for defining, in combination with said chambers, an exposure aperture having a width greater than the respective widths of said film strip and said backing material, and wherein a segment of said trailing end portion of said backing material is disposed within said exposure aperture, including the further step of: displacing said segment of said backing material trailing end portion through said exposure aperture.
Claim 8
Dependent Claim
56 words
The invention of claim 5 wherein said channel means further defines a support wall generally opposing said segment of said trailing end portion of said backing material, said support wall having an access window formed therein, and including the further step of: displacing said backing materiaL trailing end segment away from said wall via said window.
Claim 9
Dependent Claim
168 words
Apparatus for use in extracting a web strip from a cartridge having a chamber defined in part by a curved wall and having a chamber access opening, said web strip being interwound with a backing strip to form a roll housed within said chamber, said web strip having a trailing end disposed within said chamber, said cartridge further defining an exposure aperture located adjacent said access opening and having a width at least as great as the respective widths of said web strip and said backing strip, said backing strip having a trailing end portion extending from said roll, through said access opening, and into said exposure aperture, said apparatus comprising: a. means for dislodging said backing strip from said exposure aperture; and b. means for engaging said trailing portion of said backing strip and for displacing said backing strip with respect to said cartridge to withdraw said backing strip from said chamber, thereby to extract said web strip from said chamber through contact with said backing strip.
Claim 10
Dependent Claim
168 words
Apparatus for use in extracting a web strip from a cartridge having a chamber defined in part by a curved wall and having a chamber access opening, said web strip being interwound with a backing strip to form a roll housed within said chamber, said web strip having a trailing end disposed within said chamber, said cartridge further defining an exposure aperture located adjacent said access opening and having a width at least as great as the respective widths of said web strip and said backing strip, said backing strip having a trailing end portion extending from said roll, through said access opening, and into said exposure aperture, said apparatus comprising: a. means for dislodging said backing strip from said exposure aperture; and b. means for engaging said trailing portion of said backing strip and for displacing said backing strip with respect to said cartridge to withdraw said backing strip from said chamber, thereby to extract said web strip from said chamber through contact with said backing strip.
Claim 11
Dependent Claim
61 words
The invention of claim 7 wherein said cartridge further defines a passageway within said chamber and in communication with said access opening and wherein said trailing end of said web strip is left disposed within said passageway, whereby while withdrawing said backing strip from said chamber said web strip does not contact the internal surface of the wall defining said chamber.
Claim 12
Dependent Claim
58 words
The invention of claim 8 wherein said exposure aperture is further defined by a support wall generally opposing said segment of said trailing end portion of said backing material, said wall having formed therein a window, and wherein said dislodging means includes means for passing through said window to position said backing strip segment away from said wall.
Claim 13
Dependent Claim
23 words
The invention of claim 1 wherein said web strip is not attached to said backing strip but is solely in frictional contact therewith.
Claim 14
Dependent Claim
32 words
The invention of claim 10 wherein said cartridge further includes a rotatable winding core disposed within said chamber and wherein the leading end of said backing strip is attached to said core.
Claim 15
Dependent Claim
23 words
The invention of claim 7 wherein said web strip is not attached to said backing strip but is solely in frictional contact therewith.
Claim 16
Dependent Claim
32 words
The invention of claim 12 wherein said cartridge further includes a rotatable winding core disposed within said chamber and wherein the leading end of said backing strip is attached to said core.
References Cited (Backward Citations)
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Cited
US2341368A
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US2419809A
Cited
US3255977A
Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |