US3751256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid receiving means
Assignee: Eastman Kodak Co
•
Filing: 1971-09-07
•
Granted: 1973-08-07
•
Expires: 1991-09-07
Abstract
Abstract An improved fluid receiving structure or trap for use with a self-processing photographic film unit or the like. The trap is best adapted for use in composite or integral film units in which it is permanently locatable entirely within the borders of the unit, making unnecessary its separation from the unit after processing. The trap comprises an inflatable bladder constrained by a substantially non-crushable framing structure.
Inventors
- 👤 D Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:14
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
19 words
A self-processing photographic film unit according to claim 1 wherein the means outside the bladder includes a skeletal structure.
Claim 2
Dependent Claim
40 words
A self-processing photographic film unit according to claim 2 wherein the skeletal structure is formed in part by an end portion of the image-recording portion which extends into the receiving means, said end portIon having at least one aperture therein.
Claim 3
Dependent Claim
25 words
A self-processing photographic film unit according to claim 3 wherein a frame-like element is provided at the side of said end-portion remote from the bladder.
Claim 4
Dependent Claim
71 words
A self-processing photographic film unit according to claim 4 wherein the frame-like element is of comb form and that the spine of the comb-form element is at the trailing end of the unit and the teeth members of the comb-form element are directed towards the image-recording regions, and wherein the free ends of the teeth members have inclined surfaces to assist in parting pressure-applying member used in the initiation of processing.
Claim 5
Dependent Claim
27 words
A self-processing photographic film unit according to claim 1 wherein a cover is provided over the exterior of the means outside the bladder for protecting the bladder.
Claim 6
Dependent Claim
27 words
A self-processing photographic film unit according to claim 6 wherein the cover is formed of stiff material and is capable of accepting writing on an exterior surface.
Claim 7
Dependent Claim
20 words
A self-processing photographic film unit according to claim 6 wherein the cover is provided with vents allowing escape of air.
Claim 8
Dependent Claim
28 words
A self-processing photographic film unit according to claim 1 wherein the bladder has vent means which allows the escape of gas but not the passage of processing composition.
Claim 9
Dependent Claim
84 words
A self-processing photographic film unit according to claim 1 wherein the image-recording portion includes a photosensitive element and a process sheet, and the bladder is formed of a generally rectangular sheet of pliable material folded about its middle and with the sides contiguous with the fold being sealed and one of the free edges of the sheet being secured to the process sheet of the image-recording portion and the other of the free edges being secured to the photosensitive element of the image-recording element.
References Cited (Backward Citations)
US3607285A
Cited
US3652281A
Cited
US3619193A
Cited
US3652282A
Cited
US3621768A
Cited
US3672272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |