Patent US4456826A successfully refreshed from Google Patents.
US4456826A
Expired / Lapsed
US
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Rotating detector system with coolant supply
Assignee: Siemens AG
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Filing: 1982-09-30
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Granted: 1984-06-26
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Expires: 2002-09-30
Abstract
Abstract In an arrangement for preparing a sectional image of the body, the picture elements of which are derived from the absorption of ionizing rays, the detector system contains detectors associated with a cooling system having a cooling finger against which the cooling surfaces of the detectors rest and which is connected via a cryogenic line to two coolant tanks which are arranged in the plane of motion of the detector system centrally symmetric to the center of rotation. As a result the rotating detector system with the coolant supply requires no automatic mass equalization device adapted to the consumption of coolant, and the cooling system can be designed for different operating times.
Inventors
- 👤 Helmut Forster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:19
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/02; A61B6/03; A61B6/032; A61B6/035; A61B6/44; A61B6/4488; F; F17; F17C; F17C3/00; F17C3/02; F17C3/08; G; G01; G01T; G01T1/00; G01T1/16; G01T1/24; G01T1/244
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
In an arrangement for preparing a sectional image of the body, the picture elements of which are derived from the absorption of iodizing rays which penetrate the corresponding body element in a sectional body plane in different directions, with a rotating detector system which contains detectors arranged side by side in the plane of motion, the improvement comprising: (a) the detector system containing individual detectors; (b) a cooling system provided with a cooling finger against which cooling surfaces of said detectors rest; (c) two coolant tanks which are arranged in the plane of motion of the detector system centrally symmetric to its center of rotation; and (d) a cryogenic line connecting said tanks to said cooling system.
Claim 2
Dependent Claim
117 words
In an arrangement for preparing a sectional image of the body, the picture elements of which are derived from the absorption of iodizing rays which penetrate the corresponding body element in a sectional body plane in different directions, with a rotating detector system which contains detectors arranged side by side in the plane of motion, the improvement comprising: (a) the detector system containing individual detectors; (b) a cooling system provided with a cooling finger against which cooling surfaces of said detectors rest; (c) two coolant tanks which are arranged in the plane of motion of the detector system centrally symmetric to its center of rotation; and (d) a cryogenic line connecting said tanks to said cooling system.
Claim 3
Dependent Claim
18 words
The improvement according to claim 1, wherein said cooling finger and said detectors are arranged in a vacuum.
Claim 4
Dependent Claim
28 words
The improvement according to claim 1, wherein said detector system comprises detectors with a semiconductor body of highest purity monocrystalline germanium, and wherein liquid nitrogen is the coolant.
Claim 5
Dependent Claim
16 words
The improvement according to claim 1, wherein said cooling finger is designed as a thermal resistance.
Claim 6
Dependent Claim
21 words
The improvement according to claim 1, wherein the detectors are fastened on the cooling finger by means of insulators and clamps.
Claim 7
Dependent Claim
27 words
The improvement according to claim 1, wherein said cooling finger has inlet and outlet nozzles, said nozzles cryogenically connected to an outer jacket of the detector system.
Claim 8
Dependent Claim
26 words
The improvement according to claim 6, and further including a window made of composite alloy steel/aluminum in the outer jacket pointing toward the center of rotation.
References Cited (Backward Citations)
US3609992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |