US3821580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash x ray tube
Assignee: Individual
•
Filing: 1971-12-23
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Granted: 1974-06-28
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Expires: 1991-12-23
Abstract
Abstract A flash X-ray tube having two electrodes, each electrode being provided with means for effecting autoelectronic emission adapted to bring about emanation of X-rays, respectively, from the other one of the two electrodes. The electrodes are so constructed and arranged in the tube that they ensure emanation of X-rays in a specified direction.
Inventors
- 👤 E Alexandrovich
- 👤 N Belkin
- 👤 A Razin
- 👤 L Tarasova
- 👤 K Zelensky
- 👤 M Kanunov
- 👤 J Ioffe
- 👤 V Vasiliev
- 👤 N Dron
- 👤 G Sloeva
- 👤 L Khudyakova
- 👤 V Tsukerman
- 👤 A Toropov
- 👤 I Troshkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:15
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
Flash X-ray tube comprising: an envelope; a first electrode disposed within said envelope; a second electrode also disposed within said envelope; said first electrode carrying first means for effecting autoelectronic emission adapted to bring about emanation of X-rays by said second electrode; said second electrode carrying sound means for effecting autoelectronic emission adapted to bring about emanation of X-rays by said first electrode; said electrodes being so constructed and arranged, as to ensure emanation of X-rays in a specified direction and means for applying electric pulses of alternating polarity to said electrodes.
Claim 2
Dependent Claim
92 words
Flash X-ray tube comprising: an envelope; a first electrode disposed within said envelope; a second electrode also disposed within said envelope; said first electrode carrying first means for effecting autoelectronic emission adapted to bring about emanation of X-rays by said second electrode; said second electrode carrying sound means for effecting autoelectronic emission adapted to bring about emanation of X-rays by said first electrode; said electrodes being so constructed and arranged, as to ensure emanation of X-rays in a specified direction and means for applying electric pulses of alternating polarity to said electrodes.
Claim 3
Dependent Claim
35 words
A flash X-ray tube according to claim 1, wherein said electrodes extend along the longitudinal axis of said tube, the respective opposing face surfaces of said electrodes carrying said respective means for effecting autoelectronic emission.
Claim 4
Dependent Claim
48 words
A flash X-ray tube according to claim 2, wherein said opposing respective face surfaces of said electrodes are disposed each at an angle within a 20* to 60* range relative to a plane perpendicular to said longitudinal axis of said tube, and symmetrically in respect of said plane.
Claim 5
Dependent Claim
41 words
A flash X-ray tube according to claim 2, wherein one of said two electrodes is made from a material transparent for X-rays, said face surface of said last-mentioned electrode being coated with a layer of metal with a great atomic number.
Claim 6
Dependent Claim
35 words
A flash X-ray tube as claimed in claim 2 wherein said means for effecting autoelectronic emission comprises a thin wall tube made of high heat resistant foil on the face surface of the respective electrode.
Claim 7
Dependent Claim
14 words
A flash X-ray tube as claimed in claim 5 wherein said foil is tungsten.
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) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |