US4591756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High power window and support structure for electron beam processors
Assignee: Energy Sciences Inc
•
Filing: 1985-02-25
•
Granted: 1986-05-27
•
Expires: 2005-02-25
Abstract
Abstract A high power window for an evacuated electron beam generator and the like which comprises one or more pluralities of conductive successive fins parallelly and closely spaced arcuately extending transversely across the electron beam foil window and held by the vacuum pressure to the inner surface thereof, with the fin cross-section preferably tapering in thickness inwardly.
Inventors
- 👤 Tzvi Avnery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:38
CPC Classifications
H; H01; H01J; H01J33/00; H01J33/02; H01J33/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
66 words
A high power window for an evacuated electron beam generator and the like having, in combination, a longitudinally extending metallic foil window closing off the vacuum, and one or more pluralities of sets of successive parallely and closely spaced arcuately extending conductive fins held by the vacuum pressure to the inner surface of the foil and curving transversely across said inner surface between its longitudinal edges.
Claim 2
Dependent Claim
66 words
A high power window for an evacuated electron beam generator and the like having, in combination, a longitudinally extending metallic foil window closing off the vacuum, and one or more pluralities of sets of successive parallely and closely spaced arcuately extending conductive fins held by the vacuum pressure to the inner surface of the foil and curving transversely across said inner surface between its longitudinal edges.
Claim 3
Dependent Claim
28 words
A high power window as claimed in claim 1, in which the curve of the metallic fins is at least in part one of C- and S- shape.
Claim 4
Dependent Claim
25 words
A high power window as claimed in claim 2 and in which the cross-section of the fins tapers from the foil inward of the vacuum.
Claim 5
Dependent Claim
20 words
A high power window as claimed in claim 3, in which said fins are of substantially parabolic shape in cross-section.
Claim 6
Dependent Claim
20 words
A high power window as claimed in claim 3, in which said fins are of substantially triangular or trapezoidal cross-section.
Claim 7
Dependent Claim
22 words
A high power window as claimed in claim 1, in which the plurality of metallic fins includes fins of different cross-sectional thickness.
Claim 8
Dependent Claim
31 words
A high power window as claimed in claim 1, in which at least portions of the fins are covered with a high atomic number element to increase electron beam reflection properties.
Claim 9
Dependent Claim
18 words
A high power window as claimed in claim 7 in which the high atomic number element is tantalum.
Claim 10
Dependent Claim
34 words
A high power window as claimed in claim 1, in which a portion of the fins are covered with a low atomic number element to reduce x-ray generation from electron contact with the fins.
Claim 11
Dependent Claim
18 words
A high power window as claimed in claim 9 in which the low atomic number element is aluminum.
Claim 12
Dependent Claim
37 words
A high power window as claimed in claim 1 in which the metallic foil has a low atomic number element on the surface facing the electron beam to reduce x-ray generation from electron contact with the foil.
Claim 13
Dependent Claim
18 words
A high power window as claimed in claim 11 in which the low atomic number element is aluminum.
Claim 14
Dependent Claim
18 words
A high power window as claimed in claim 2, in which the metallic foil is a bimetallic foil.
Claim 15
Dependent Claim
16 words
A high power window as claimed in claim 13, in which the bimetallic foil includes titanium.
Claim 16
Dependent Claim
16 words
A high power window as claimed in claim 13 in which the bimetallic foil includes copper.
Claim 17
Dependent Claim
31 words
A high power window as claimed in claim 1 in which the surface of the fins secured to the window is curved to attach to somewhat curved portions of the window.
References Cited (Backward Citations)
US2449872A
Cited
US3440466A
Cited
US3442466A
Cited
US3702412A
Cited
US3769600A
Cited
US4100450A
Cited
US4362965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |