US3894238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated dosimetric card
Assignee: Solon Technologies Inc
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Filing: 1973-12-05
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Granted: 1975-07-08
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Expires: 1993-12-05
Abstract
Abstract A laminated card with one or more apertures, each adapted to peripherally seal an encapsulated dosimeter, is formed by bonding a foraminous, code-adaptable, rigid sheet of low-Z material with a codedly transparent sheet of low-Z material in lighttransmitting registry with particular code-holes of the rigid sheet. The laminated card may be coded to identify the person carrying it, and/or the location or circumstances related to its exposure to radiation. This card is particularly adapted for use in an instrument capable of evaluating a multiplicity of cards, substantially continuously. The coded identification from the card may be displayed by an appropriate machine, and if desired an evaluation may be recorded because of a ''''parity checking'''' system incorporated in each card, which permits ''''autocorrection.'''' Alternatively, where means for effecting the correction automatically are available, the operation of the machine may be interrupted to permit visual examination of a rejected card. The card of this invention is also coded for identifying the type of card with respect to its specific function, and whether or not a card is correctly positioned at any predetermined location during its sequential progress through the instrument in which it is evaluated. Dosimeters are evaluated and the card identified in one pass through the instrument.
Inventors
- 👤 Francis Morgan Cox
- 👤 James D Chamberlain
- 👤 Erwin F Shrader
- 👤 Bruce M Shoffner
- 👤 Andras Szalanczy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:27
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/10; G01T1/11; G01T1/115; Y; Y10; Y10S; Y10S430/00; Y10S430/165
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
164 words
A laminated card adapted to be worn by a person susceptible to potentially injurious radiation, comprising a foraminous, code-adaptable rigid substrate of essentially non-luminescent material on which is adhered a non-luminescent sheet of film material light-permeably coded in light-transmitting registry with particular holes of said substrate to enable said card to be uniquely identified in accordance with a preselected code, said substrate having vertical edges confining said film material, and, a depressed portion, said depressed portion providing a rectangular trough or recess along the opposite side of said substrate, said substrate and said non-luminescent sheet having one or more apertures from about 0.2 cm. to about 2 cm. in diameter, each said aperture adapted to have commonly disposed therebetween in said trough or recess a dosimeter encapsulated in an envelope of a heat-sealable essentially non-luminescent synthetic polymeric resin, said envelope being secured between said substrate and said film material, whereby a dosimeter may be heated at a pre-determined location in an automatic evaluation instrument.
Claim 2
Dependent Claim
164 words
A laminated card adapted to be worn by a person susceptible to potentially injurious radiation, comprising a foraminous, code-adaptable rigid substrate of essentially non-luminescent material on which is adhered a non-luminescent sheet of film material light-permeably coded in light-transmitting registry with particular holes of said substrate to enable said card to be uniquely identified in accordance with a preselected code, said substrate having vertical edges confining said film material, and, a depressed portion, said depressed portion providing a rectangular trough or recess along the opposite side of said substrate, said substrate and said non-luminescent sheet having one or more apertures from about 0.2 cm. to about 2 cm. in diameter, each said aperture adapted to have commonly disposed therebetween in said trough or recess a dosimeter encapsulated in an envelope of a heat-sealable essentially non-luminescent synthetic polymeric resin, said envelope being secured between said substrate and said film material, whereby a dosimeter may be heated at a pre-determined location in an automatic evaluation instrument.
Claim 3
Dependent Claim
43 words
The laminated card of claim 1 wherein said substrate is relatively thin, having a thickness in the range from about 0.005 in. 0.030 in., and said vertical edges extend, peripherally, in the same direction as that in which said depressed portion is deformed.
Claim 4
Dependent Claim
16 words
The laminated card of claim 1 wherein said heat-sealable essentially non-luminescent synthetic polymeric resin is polytetrafluoroethylene.
Claim 5
Dependent Claim
27 words
The laminated card of claim 1 wherein said heat sealable essentially non-luminescent synthetic polymeric resin is a laminate comprising sintered polytetrafluoroethylene and heat-sealable fluorinated ethylene propylene resins.
Claim 6
Dependent Claim
12 words
The laminated card of claim 1 having at least two common apertures.
Claim 7
Dependent Claim
108 words
In a laminated card adapted to register potentially injurious radiation on one or more dosimeters fixedly disposed between a foraminous, code-adaptable substrate of essentially non-luminescent material and a codedly light-permeable, non-luminescent sheet of film material in light-transmitting registry with particular holes of said foraminous substrate to enable said card to be uniquely identified in accordance with a preselected code, the improvement comprising a depressed portion which provides a rectangular trough or recess along the opposite side of said substrate, and peripheral vertical edges extending downwardly beyond said depressed portion, said film material being disposed intermediate said vertical edges which confine said material to present an essentially planar surface.
Claim 8
Dependent Claim
108 words
In a laminated card adapted to register potentially injurious radiation on one or more dosimeters fixedly disposed between a foraminous, code-adaptable substrate of essentially non-luminescent material and a codedly light-permeable, non-luminescent sheet of film material in light-transmitting registry with particular holes of said foraminous substrate to enable said card to be uniquely identified in accordance with a preselected code, the improvement comprising a depressed portion which provides a rectangular trough or recess along the opposite side of said substrate, and peripheral vertical edges extending downwardly beyond said depressed portion, said film material being disposed intermediate said vertical edges which confine said material to present an essentially planar surface.
Claim 9
Dependent Claim
52 words
An encapsulated dosimeter for persons or objects exposed to a source of said radiation, comprising a predetermined quantity of thermoluminescable material sealingly encapsulated within an envelope of a laminate comprising sintered polytetrafluoroethylene resin and a heat-sealable polymeric fluorinated ethylene propylene resin wherein contiguous surfaces of said fluorinated ehtylene propylene resin are heat-sealed.
Claim 10
Dependent Claim
52 words
An encapsulated dosimeter for persons or objects exposed to a source of said radiation, comprising a predetermined quantity of thermoluminescable material sealingly encapsulated within an envelope of a laminate comprising sintered polytetrafluoroethylene resin and a heat-sealable polymeric fluorinated ethylene propylene resin wherein contiguous surfaces of said fluorinated ehtylene propylene resin are heat-sealed.
Claim 11
Dependent Claim
15 words
The encapsulated dosimeter of claim 7 wherein said dosimeter is fixedly disposed within said envelope.
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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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |