Patent US3857040A successfully refreshed from Google Patents.
US3857040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic film processing machine
Assignee: Individual
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Filing: 1973-10-15
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Granted: 1974-12-24
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Expires: 1993-10-15
Abstract
Abstract An X-ray film cassette for a daylight processor is comprised of a pair of vertically disposed opposing covers having a bottom light barrier formed by mating transverse angular projecting and receding portions on the lower inner surfaces thereof. The opposing covers are held together by spring biased fasteners on the longitudinal sides thereof to form a light-tight enclosure for accomodating the film. When the cassette is vertically disposed with its bottom end inserted to contact side abutments in the entrance slot of the processor, the covers are separated against the action of the spring biased fasteners to enable the film to drop down past the peaks of the transverse angular projection portions into the processor.
Inventors
- 👤 E Zwettler
- 👤 S Goebels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:34
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/132; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/045; G03D13/00; G03D13/003
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
277 words
An X-ray film cassette for use in a daylight processor having an entrance slot with side abutments therein, the combination comprising: a first vertically disposed rectangular cover having a well formed on the inner central portion thereof and having longitudinal sides, a second vertically disposed opposing rectangular cover having a complementary land formed on the inner central portion thereof for fitting in the well of the first cover and having longitudinal margiNal sidewalls for slideably extending over the longitudinal sides of said first cover to exclude passage of outside light into the interior of said cassette, a pair of vertically spaced transverse angular projecting portions on the inner lower surface of one of said covers, the region between the peaks of said pair of angular projecting portions forming a transverse angular receding portion, a single transverse angular projecting portion on the inner lower surface of the other of said covers, and spring biased fasteners on the longitudinal sides of said cassette for resiliently holding the inner central portions of said covers together to accomodate a film therebetween with the transverse angular receding portion on the inner lower surface of said one cover mating with the single transverse angular projecting portion on the inner lower surface of the other cover, and means on either side of the bottom of said cassette operable upon the seating of said means against the abutments on the sides of the entrance slot of said processor to separate said covers against the action of said spring biased fastners to enable the film to drop out of said cassette past the peaks of the angular projecting portions on the respective covers into said processor.
Claim 2
Dependent Claim
277 words
An X-ray film cassette for use in a daylight processor having an entrance slot with side abutments therein, the combination comprising: a first vertically disposed rectangular cover having a well formed on the inner central portion thereof and having longitudinal sides, a second vertically disposed opposing rectangular cover having a complementary land formed on the inner central portion thereof for fitting in the well of the first cover and having longitudinal margiNal sidewalls for slideably extending over the longitudinal sides of said first cover to exclude passage of outside light into the interior of said cassette, a pair of vertically spaced transverse angular projecting portions on the inner lower surface of one of said covers, the region between the peaks of said pair of angular projecting portions forming a transverse angular receding portion, a single transverse angular projecting portion on the inner lower surface of the other of said covers, and spring biased fasteners on the longitudinal sides of said cassette for resiliently holding the inner central portions of said covers together to accomodate a film therebetween with the transverse angular receding portion on the inner lower surface of said one cover mating with the single transverse angular projecting portion on the inner lower surface of the other cover, and means on either side of the bottom of said cassette operable upon the seating of said means against the abutments on the sides of the entrance slot of said processor to separate said covers against the action of said spring biased fastners to enable the film to drop out of said cassette past the peaks of the angular projecting portions on the respective covers into said processor.
Claim 3
Dependent Claim
65 words
The combination in accordance with claim 1 wherein said means comprises notches formed by angular surfaces on either side edge of the bottoms of said respective covers, said notches adapted on contact of the opposing angular surfaces thereof with the side abutments in said entrance slot to wedge the covers apart against the action of said spring biased fasteners to free the film accomodated therebetween.
Claim 4
Dependent Claim
68 words
The combination as defined in claim 1 including a sheet of lead secured on the inner central surface of one of said covers and a first intensifying screen secured on said sheet of lead, and a second intensifying screen secured on the inner central surface of the other of said covers, said film being accomodated between said first and second screens in the closed position of said covers.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |