US4045699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of light-metal panes as x-ray transmissive windows
Assignee: Siemens AG
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Filing: 1975-08-26
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Granted: 1977-08-30
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Expires: 1995-08-26
Abstract
Abstract A light-metal pane usable as an X-ray transmissive or penetrable window which is constituted of a material readily permitting the passage of X-rays therethrough. The window pane is obtained through the use of a two-layer material, of which one layer is formed of light-weight metal, and the other layer comprises a heavy-weight metal. In the ray transmitting portion of the window, the heavy-weight metal layer is removed, and at the edge the light-weight metal, so that there remains the two-layer material in the transitional region towards the edge of the window.
Inventors
- 👤 Stefan Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:15
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/50; H01J31/501; H01J35/00; H01J35/02; H01J35/16; H01J35/18; H01J9/00; H01J9/24; H01J9/26; H01J9/263; H01J2235/00; H01J2235/18; H01J2235/183
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
144 words
In ray-penetrating windows for high-vacuum tubes, the use of X-ray penetrable window panes weldable into heavy-metal frames, said panes being each constituted of a layered plate formed of two integrally connected layers formed by rolling under high pressure, one said layer being a light-weight metal excluding beryllium having a density of less than 4.5 g/cm 3 , and the other layer being a heavy-weight metal having a density of more than 4.5 g/cm 3 , said heavy-weight metal being removed from the center of said light-weight metal layer towards the edge region thereof and said light-weight metal layer being removed from the edge of said heavy-weight metal layer so as to form an overlapping two-layered portion, the heavy-weight metal edge providing a vacuum tight connection to said frames, said pane being insertable into said frames and said heavy-weight metal edge portion being weldable thereto.
Claim 2
Dependent Claim
144 words
In ray-penetrating windows for high-vacuum tubes, the use of X-ray penetrable window panes weldable into heavy-metal frames, said panes being each constituted of a layered plate formed of two integrally connected layers formed by rolling under high pressure, one said layer being a light-weight metal excluding beryllium having a density of less than 4.5 g/cm 3 , and the other layer being a heavy-weight metal having a density of more than 4.5 g/cm 3 , said heavy-weight metal being removed from the center of said light-weight metal layer towards the edge region thereof and said light-weight metal layer being removed from the edge of said heavy-weight metal layer so as to form an overlapping two-layered portion, the heavy-weight metal edge providing a vacuum tight connection to said frames, said pane being insertable into said frames and said heavy-weight metal edge portion being weldable thereto.
Claim 3
Dependent Claim
20 words
A window as claimed in claim 1, said light-weight metal layer being aluminum and said heavy-weight metal layer being copper.
Claim 4
Dependent Claim
44 words
A window as claimed in claim 1, comprising a preformed component constituted of an aluminum-copper two-layered material, said window being provided with an X-ray penetrable central portion by having the copper layer removed therefrom, and having the aluminum layer removed from the edges thereof.
Claim 5
Dependent Claim
24 words
A window as claimed in claim 1, said frame being steel and forming a portion of said vacuum tube for an image amplifier tube.
Claim 6
Dependent Claim
44 words
A window as claimed in claim 4, said window portion facilitating penetration of said rays being located within said light-weight metal portion, said overlapping two-layered portion engaging part of the side wall of said tube intermediate said window portion and the weldable edge thereof.
Claim 7
Dependent Claim
31 words
A window as claimed in claim 1, comprising an outwardly flanged edge fitted into said frame against relative displacement therewith, said window flanged edge and frame being welded to each other.
Claim 8
Dependent Claim
145 words
In ray-penetrating windows for high-vacuum tubes, the use of X-ray penetrable window panes weldable into heavy-metal frames, said panes being each constituted of a layered plate formed of two integrally connected layers, one said layer being a light-weight metal having a density of less than 4.5 g/cm 3 , and the other said layer being a heavy-weight metal having a density of more than 4.5 g/cm 3 , said heavy-weight metal being removed from the center of said light-weight metal layer towards the edge region thereof and said light-weight metal layer being removed from the edge so as to form an overlapping two-layered portion, the heavy-weight metal edge providing a vacuum tight connection to said frames, said pane being insertable into said frames and said heavy-weight metal edge portion being weldable thereto, said light-weight metal layer being aluminum and said heavy-weight metal layer being iron.
Claim 9
Dependent Claim
145 words
In ray-penetrating windows for high-vacuum tubes, the use of X-ray penetrable window panes weldable into heavy-metal frames, said panes being each constituted of a layered plate formed of two integrally connected layers, one said layer being a light-weight metal having a density of less than 4.5 g/cm 3 , and the other said layer being a heavy-weight metal having a density of more than 4.5 g/cm 3 , said heavy-weight metal being removed from the center of said light-weight metal layer towards the edge region thereof and said light-weight metal layer being removed from the edge so as to form an overlapping two-layered portion, the heavy-weight metal edge providing a vacuum tight connection to said frames, said pane being insertable into said frames and said heavy-weight metal edge portion being weldable thereto, said light-weight metal layer being aluminum and said heavy-weight metal layer being iron.
Claim 10
Dependent Claim
145 words
In ray-penetrating windows for high-vacuum tubes, the use of X-ray penetrable window panes weldable into heavy-metal frames, said panes being each constituted of a layered plate formed of two integrally connected layers, one said layer being a light-weight metal having a density of less than 4.5 g/cm 3 , and the other said layer being a heavy-weight metal having a density of more than 4.5 g/cm 3 , said heavy-weight metal being removed from the center of said light-weight metal layer towards the edge region thereof and said light-weight metal layer being removed from the edge so as to form an overlapping two-layered portion, the heavy-weight metal edge providing a vacuum tight connection to said frames, said pane being insertable into said frames and said heavy-weight metal edge portion being weldable thereto, said light-weight metal layer being titanium and said heavy-weight metal layer being copper.
Claim 11
Dependent Claim
145 words
In ray-penetrating windows for high-vacuum tubes, the use of X-ray penetrable window panes weldable into heavy-metal frames, said panes being each constituted of a layered plate formed of two integrally connected layers, one said layer being a light-weight metal having a density of less than 4.5 g/cm 3 , and the other said layer being a heavy-weight metal having a density of more than 4.5 g/cm 3 , said heavy-weight metal being removed from the center of said light-weight metal layer towards the edge region thereof and said light-weight metal layer being removed from the edge so as to form an overlapping two-layered portion, the heavy-weight metal edge providing a vacuum tight connection to said frames, said pane being insertable into said frames and said heavy-weight metal edge portion being weldable thereto, said light-weight metal layer being titanium and said heavy-weight metal layer being copper.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |