US4613982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiodiagnostic apparatus for mammograms
Assignee: Siemens AG
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Filing: 1984-05-21
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Granted: 1986-09-23
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Expires: 2004-05-21
Abstract
Abstract The invention relates to a radiodiagnostics apparatus for mammograms with an adjustable x-ray tube fastened to a mount, a compression device, and two recording stages to be selectively aligned with the x-ray tube. The recording stages are pivotably connected with the mount in such a way that one can be brought into a recording position and the second into a parked position.
Inventors
- 👤 Hans-Peter Dornheim
- 👤 Edmund Saffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:43
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/50; A61B6/502; A61B6/04; H; H05; H05G; H05G1/00; H05G1/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
95 words
In a mammographic radiodiagnostic apparatus of the type having an x-ray source attached to a mount, a compression device and a plurality of recording stages which are selectively alignable with the x-ray source and are each constructed to receive an individual film cassette, the improvement wherein said plurality of recording stages are pivotally connected to the mount in such a manner that any one of said plurality is alignable with the x-ray source to expose its film cassette, and all others in said plurality are thereupon disaligned with the x-ray source in a non-exposable position.
Claim 2
Dependent Claim
95 words
In a mammographic radiodiagnostic apparatus of the type having an x-ray source attached to a mount, a compression device and a plurality of recording stages which are selectively alignable with the x-ray source and are each constructed to receive an individual film cassette, the improvement wherein said plurality of recording stages are pivotally connected to the mount in such a manner that any one of said plurality is alignable with the x-ray source to expose its film cassette, and all others in said plurality are thereupon disaligned with the x-ray source in a non-exposable position.
Claim 3
Dependent Claim
39 words
The improvement of claim 1, wherein there are exactly two recording stages which are rotatable about an axis parallel to the central ray from the x-ray source and said stages are diametrically opposed to each other across said axis.
Claim 4
Dependent Claim
54 words
The improvement of claim 1, wherein there are exactly two recording stages mounted to opposite ends of a support to form a U-shaped recording unit, said support being rotatable about an axis perpendicular to the central ray of the x-ray source, and said recording unit externally embracing the x-ray source and the compression device.
Claim 5
Dependent Claim
29 words
The improvement of claim 1, wherein each recording stage includes a scattered-ray grid which is movable into and out of a beam of x-rays produced by the x-ray source.
References Cited (Backward Citations)
US1722573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |