US3755673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film holder
Assignee: US Philips Corp
•
Filing: 1972-02-16
•
Granted: 1973-08-28
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Expires: 1992-02-16
Abstract
Abstract A film holder, in particular for x-ray films, comprising a holding device for films which is provided on a film holder plate and which comprises a cloth or foil which is subjected to tensile forces and which is stretched over an edge of the film holder plate.
Inventors
- 👤 M Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:13
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/32; G03B17/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
Apparatus for releasably holding a piece of X-ray film flat, comprising: a substantially rigid plate having a top surface for supporting the film, a flexible cloth or foil cover sheet having low radiation absorption positioned upon said surface and having first and second spaced-apart portions, the film being positionable and held flat between said sheet and surface, first means for fixedly holding the first portion of said cover to said plate, second means for movably holding said second portion of said cover to said plate, third means for resiliently urging said second means away from said first means and thereby tensioning said cover sheet therebetween.
Claim 2
Dependent Claim
105 words
Apparatus for releasably holding a piece of X-ray film flat, comprising: a substantially rigid plate having a top surface for supporting the film, a flexible cloth or foil cover sheet having low radiation absorption positioned upon said surface and having first and second spaced-apart portions, the film being positionable and held flat between said sheet and surface, first means for fixedly holding the first portion of said cover to said plate, second means for movably holding said second portion of said cover to said plate, third means for resiliently urging said second means away from said first means and thereby tensioning said cover sheet therebetween.
Claim 3
Dependent Claim
77 words
Apparatus according to claim 1 wherein said cover sheet has a length dimension extending between said first and second portions, said first and second portions have transverse dimensions with a tensioning force extending in a field lengthwise between said portions, said cover sheet has a middle portion intermediate said first and second portions that has width greater than each of said transverse dimensions, thereby defining side portions of said cover sheet external of said field of tensioning.
Claim 4
Dependent Claim
79 words
Apparatus according to claim 1 wherein said cover sheet has a length dimension extending between said first and second portions, said first and second portions have width dimensions transverse said length with a field defined lengthwise between said first and second portions, said cover sheet has a middle portion intermediate said first and second portions that has width greater than each of said first and second portion widths, whereby said tensioning creates tension in said field of the sheet.
Claim 5
Dependent Claim
15 words
Apparatus according to claim 3 wherein said cover sheet further comprises externally visible markings thereon.
Claim 6
Dependent Claim
34 words
Apparatus according to claim 3 wherein said first and second means respectively each comprise a rod attached to a corresponding portion of said cover sheet, and receptacle means for receiving and holding said rod.
References Cited (Backward Citations)
US2494740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |