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US4438164A Expired / Lapsed US ⏱️ 0.0 years remaining

Containers for X-ray films or the like

Assignee: Agfa Gevaert AG
•
Filing: 1982-01-20
•
Granted: 1984-03-20
•
Expires: 2002-01-20
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Abstract

Abstract A container for X-ray films is of the type wherein at least one side of the film is contacted by a stratum of fluorescent material. The fluorescent material is biased against the respective side or sides of the film by two layers which consist of ferromagnetic and/or magnetic material, flank the film and attract each other. Such layers can be applied to the inner or outer sides of sheet-like carriers consisting of synthetic plastic material. The aforedescribed film, stratum or strata, layers and carriers may but need not be inserted into the space between the rigid or flexible walls of an envelope. The envelope can be dispensed with if the carriers consist of opaque material. Since each of the two carriers can support the respective layer and the respective stratum of fluorescent material, the thickness of the entire package is minimal and the film can be placed into close proximity of one or more objects to be imaged so as to obtain sharp images of such object or objects. The distance between the film and the object or objects is reduced still further if the layers of ferromagnetic and/or magnetic material are applied to the inner sides of the respective carriers because the distance between the layers is then small and the thickness of such layers can be held to a minimum. The thinnest packages are obtained by mixing the ingredients of the layers with the ingredients of the fluorescent strata and applying to each carrier a single coat of the resulting suspension so that the coat is disposed between the respective carrier and the corresponding side of the film.

Inventors

  • 👤 Josef Pfeifer
  • 👤 Alfred Rheude

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 19:04
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/04; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10S428/913; Y10T; Y10T428/00; Y10T428/26; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31699

Claims Analysis

Total Claims: 23
Claim 1
Independent Claim 91 words
A container for a sheet-like film, particularly a container wherein a film is inserted between two spaced-apart walls, comprising carrier means consisting essentially of two sheet-like carriers flanking the film; a fluorescent stratum mounted on at least one of said carriers and disposed intermediate said one carrier and the film between said carriers; a magnetic first layer mounted on a first one of said carriers; and a second layer mounted on a second one of said carriers, said layers attracting one another so that said stratum is biased against the film.
Claim 2
Dependent Claim 91 words
A container for a sheet-like film, particularly a container wherein a film is inserted between two spaced-apart walls, comprising carrier means consisting essentially of two sheet-like carriers flanking the film; a fluorescent stratum mounted on at least one of said carriers and disposed intermediate said one carrier and the film between said carriers; a magnetic first layer mounted on a first one of said carriers; and a second layer mounted on a second one of said carriers, said layers attracting one another so that said stratum is biased against the film.
Claim 3
Dependent Claim 26 words
The container of claim 1 for a sheet-like film having a predetermined area, wherein the area of said first carrier at least approximates said predetermined area.
Claim 4
Dependent Claim 14 words
The container of claim 1, wherein at least one of said carriers is flexible.
Claim 5
Dependent Claim 13 words
The container of claim 1, wherein said second layer is a ferromagnetic layer.
Claim 6
Dependent Claim 21 words
The container of claim 1, further comprising a second fluorescent stratum disposed between the other of said carriers and the film.
Claim 7
Dependent Claim 43 words
The container of claim 1, wherein said one carrier is said first carrier and has a first and a second side, said first layer being applied to one of said sides and said fluorescent stratum being applied to the other of said sides.
Claim 8
Dependent Claim 46 words
The container of claim 6, wherein said second carrier has a first side and a second side and said second layer is applied to one side of said second carrier; and further comprising a second fluorescent stratum applied to the other side of said second carrier.
Claim 9
Dependent Claim 16 words
The container of claim 7, wherein said other sides of said carriers face the film therebetween.
Claim 10
Dependent Claim 60 words
The container of claim 1, wherein each of said carriers has a side facing the film therebetween, said layers being applied to said sides of said carriers and said stratum being applied to the respective layer intermediate such layer and the film between said carriers; and further comprising a second fluorescent stratum disposed between the other layer and the film.
Claim 11
Dependent Claim 14 words
The container of claim 9, wherein one of said layers is a ferromagnetic layer.
Claim 12
Dependent Claim 27 words
The container of claim 1, wherein said first layer is integral with said fluorescent stratum; and further comprising a second fluorescent stratum integral with said second layer.
Claim 13
Dependent Claim 37 words
The container of claim 11, wherein the constituents of said layers and the respective fluorescent strata are intermixed with each other and form homogeneous films at those sides of the respective carriers which face the film therebetween.
Claim 14
Dependent Claim 23 words
The container of claim 1, further comprising a lead layer, said lead layer being interposed between said fluorescent stratum and said first layer.
Claim 15
Dependent Claim 16 words
The container of claim 1, wherein one of said layers is multipolar on one side thereof.
Claim 16
Dependent Claim 18 words
The container of claim 1, wherein at least one of said layers is multipolar on two sides thereof.
Claim 17
Dependent Claim 17 words
The container of claim 1, wherein at least one of said carriers consists of synthetic plastic material.
Claim 18
Dependent Claim 20 words
The container of claim 16, wherein said synthetic plastic material is selected from the group consisting of triacetate and polyester.
Claim 19
Dependent Claim 16 words
The container of claim 1, wherein one of said carriers has a thickness of 0.2-0.3 mm.
Claim 20
Dependent Claim 14 words
The container of claim 1, wherein at least one of said carriers is opaque.
Claim 21
Dependent Claim 17 words
The container of claim 1, wherein said stratum and said layers are integral with the respective carriers.
Claim 22
Dependent Claim 14 words
The container of claim 1, wherein at least one of said walls is rigid.
Claim 23
Dependent Claim 14 words
The container of claim 1, wherein at least one of said walls is flexible.

References Cited (Backward Citations)

US2590892A Cited
US2590891A Cited
US3359152A Cited
DE1221548B Cited
US3582912A Cited
US3704369A Cited
US4350248A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-03-20 1987-09-19 1988-03-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-03-20 1991-09-19 1992-03-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-03-20 1995-09-19 1996-03-20 $7700.00 Window Closed / Lapsed

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