US3567934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film badge with improved radiation filtering structures
Assignee: Technical Operations Inc
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Filing: 1968-08-30
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Granted: 1971-03-02
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Expires: 1988-08-30
Abstract
Abstract A radiation monitoring film pack and a holder therefor are disclosed. The film pack has a wrapper with a flap extending from it carrying identifying data. The holder defines a slot for receiving the film pack, novel U-shaped radiation filters for shielding the film from edgewise, as well as head-on radiation, and a frame which overlies the film-holding structure and holds the flap such that a surface on which the identifying data appears is visible.
Inventors
- 👤 Eric T Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:08
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
169 words
A film badge useful for monitoring high energy radiation comprising: a radiation-sensitive film element; a film packet opaque to visible light comprising a portion completely enveloping said element and a flexible flap extending from said portion with a surface for identification data; a holder defining a slot for receiving said portion of said packet enveloping said element; a radiation filter for attenuating radiation before impingement upon said film element, said filter comprising a U-shaped radiation shielding member supported in said holder in registration with said slot for receiving said portion of a film packet inserted into said slot; and clamping means pivotally connected to said holder, said clamping means being movable between an open position for loading said film packet and a closed portion against said holder wherein said clamping means acts to bend said packet such that said flap is clamped against said holder, said clamping means defining an aperture through which said identification data on said flap is visible when said flap is in its clamped position.
Claim 2
Dependent Claim
169 words
A film badge useful for monitoring high energy radiation comprising: a radiation-sensitive film element; a film packet opaque to visible light comprising a portion completely enveloping said element and a flexible flap extending from said portion with a surface for identification data; a holder defining a slot for receiving said portion of said packet enveloping said element; a radiation filter for attenuating radiation before impingement upon said film element, said filter comprising a U-shaped radiation shielding member supported in said holder in registration with said slot for receiving said portion of a film packet inserted into said slot; and clamping means pivotally connected to said holder, said clamping means being movable between an open position for loading said film packet and a closed portion against said holder wherein said clamping means acts to bend said packet such that said flap is clamped against said holder, said clamping means defining an aperture through which said identification data on said flap is visible when said flap is in its clamped position.
Claim 3
Dependent Claim
20 words
The badge defined by claim 1 wherein said holder comprises two mating elements adapted to capture said radiation filter therebetween.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |