Patent US3313339A successfully refreshed from Google Patents.
US3899337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer film pack with scratch reducing means
Assignee: Polaroid Corp
•
Filing: 1973-12-28
•
Granted: 1975-08-12
•
Expires: 1993-12-28
Abstract
Abstract A photographic film package which contains flat, multilayer photographic film units adapted for use in diffusion transfer processes to form photographic images. Means are employed to prevent scratching of the photosensitive element by grit or dirt as it is removed from the exposure position in the film pack.
Inventors
- 👤 Jr John W Nestor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:32
CPC Classifications
G; G03; G03D; G03D9/00; G03D9/02; G03B; G03B17/00; G03B17/28; G03B17/32; G03B17/34; G03C; G03C8/00; G03C8/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A PHOTOGRAPHIC FILM PACKAGE COMPRISING A GENERALLY FLAT, ELONAGATED CONTAINER HAVING AN EXPOSURE OPENING IN ONE FLAT WALL AND AN EXIT OPENING AT ONE TRANSVERSE END, A FILM UNIT INCLUDING A PHOTOSENSITIVE SHEET ELEMENTS, A NONPHOTOSENSITIVE SHEET ELEMENT AND A RUPTURABLE CONTAINER RETAINING A FLUID PROCESSING COMPOSITION, SAID PHOTOSENSITIVE SHEET ELEMENT BEING COOPERATIVELY ASSOCIATED WITH SAID EXPOSUROPENING AND ADAPTED TO BE EXPOSED TO LIGHT TRANSMITTED THROUGH SAID EXPOSURE OPENING, WEB MEANS INTROCONNECTING SAID SHEET ELEMENTS INCLUDING MEANS BY WHICH SAID POTOSENTATIVE SHEET BE MOVED INTO CONTACTING SUPERPOSITION WITH SAID NON-PHOTOSENSITIVE SHEET ELEMENT, AND SCRATCH REDUCING MEANS MOUNTED ON SAID FLAT WALL HAVING SAID EXPOSURE OPENING AND CONTACTING SAID PHOTOSENSITIVE SHEET ELEMENT, SAID SCRATCH REDUCING MEANS ADAPTED TO CONTACT SUBSTANTIALLY THE ENTIRE SURFACE OF SAID PHOTOSENSITIVE SHEET ELEMENT AS SAID PHOTOSENSITIVE SHEET ELEMENT IS MOVED INTO CONTACTING SUPERPOSITION WITH SAID NONPHOTOSENSTIVE SHEET ELEMENT.
Claim 2
Dependent Claim
142 words
A PHOTOGRAPHIC FILM PACKAGE COMPRISING A GENERALLY FLAT, ELONAGATED CONTAINER HAVING AN EXPOSURE OPENING IN ONE FLAT WALL AND AN EXIT OPENING AT ONE TRANSVERSE END, A FILM UNIT INCLUDING A PHOTOSENSITIVE SHEET ELEMENTS, A NONPHOTOSENSITIVE SHEET ELEMENT AND A RUPTURABLE CONTAINER RETAINING A FLUID PROCESSING COMPOSITION, SAID PHOTOSENSITIVE SHEET ELEMENT BEING COOPERATIVELY ASSOCIATED WITH SAID EXPOSUROPENING AND ADAPTED TO BE EXPOSED TO LIGHT TRANSMITTED THROUGH SAID EXPOSURE OPENING, WEB MEANS INTROCONNECTING SAID SHEET ELEMENTS INCLUDING MEANS BY WHICH SAID POTOSENTATIVE SHEET BE MOVED INTO CONTACTING SUPERPOSITION WITH SAID NON-PHOTOSENSITIVE SHEET ELEMENT, AND SCRATCH REDUCING MEANS MOUNTED ON SAID FLAT WALL HAVING SAID EXPOSURE OPENING AND CONTACTING SAID PHOTOSENSITIVE SHEET ELEMENT, SAID SCRATCH REDUCING MEANS ADAPTED TO CONTACT SUBSTANTIALLY THE ENTIRE SURFACE OF SAID PHOTOSENSITIVE SHEET ELEMENT AS SAID PHOTOSENSITIVE SHEET ELEMENT IS MOVED INTO CONTACTING SUPERPOSITION WITH SAID NONPHOTOSENSTIVE SHEET ELEMENT.
Claim 3
Dependent Claim
31 words
A photographic film package as defined in claim 1 wherein said scratch reducing means cushions and displaces said photosensitive sheet element from substantial contact with one edge of said flat wall.
Claim 4
Dependent Claim
24 words
A photographic film package as defined in claim 2 wherein said scratch reducing means comprises a deformable member of relatively low coefficient of friction.
Claim 5
Dependent Claim
17 words
A photographic film package as defined in claim 3 wherein said scratch reducing means comprises a fabric.
Claim 6
Dependent Claim
14 words
A photographic film package as defined in claim 4 wherein said fabric is velvet.
Claim 7
Dependent Claim
22 words
A photographic film package as defined in claim 5 wherein said velvet is substantially coextensive with one edge of said exposure opening.
References Cited (Backward Citations)
US3165039A
Cited
US3479184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |