US3701061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiofrequency window assembly having shielded solder joints and reweldable replacement flanges
Assignee: United States Atomic Energy Commission
•
Filing: 1970-10-20
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Granted: 1972-10-24
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Expires: 1990-10-20
Abstract
Abstract A radiofrequency window brazed at its periphery to a sleeve by means of solder contained in a groove in the sleeve. The groove is from one-third to one-half the thickness of the window and the diameter of the window is equal to the inside diameter of the sleeve. To provide a shielded solder joint without fillets or voids, the window is held in place during brazing with a pair of snap rings having bevelled faces held against the edges of the window to ensure that solder does not run beyond the edges of the window. The sleeve is mounted within a pair of supporting rings having a pair of truncated conical flanges attached at opposite ends for welding at their outer edges with similar truncated conical flanges attached to respective waveguide flanges. The conical flanges may be cut and rewelded near their outer edges for convenient removal and replacement of the window assembly in a waveguide system.
Inventors
- 👤 William A Novajovsky
- 👤 Max W Hoelscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:41
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
A radiofrequency window assembly for connection in a waveguide system, comprising: a sleeve having a predetermined internal diameter and an internal groove formed in the central section of said sleeve, said sleeve diameter being constant over its entire length on each side of said groove; a radiofrequency window having a diameter equal to the internal diaMeter of said sleeve and mounted within said sleeve over said groove, said window being centered over said groove and having a thickness that is greater than the width of said groove; a joint between said window and said sleeve, comprised of solder filling said groove and brazed in said groove to said sleeve and said window, all said solder being entirely between said window and said sleeve, said window shielding all said solder from direct exposure to electromagnetic radiation transmitted through said window; and means extending from said sleeve for forming a vacuum connection with said waveguide system.
Claim 2
Dependent Claim
154 words
A radiofrequency window assembly for connection in a waveguide system, comprising: a sleeve having a predetermined internal diameter and an internal groove formed in the central section of said sleeve, said sleeve diameter being constant over its entire length on each side of said groove; a radiofrequency window having a diameter equal to the internal diaMeter of said sleeve and mounted within said sleeve over said groove, said window being centered over said groove and having a thickness that is greater than the width of said groove; a joint between said window and said sleeve, comprised of solder filling said groove and brazed in said groove to said sleeve and said window, all said solder being entirely between said window and said sleeve, said window shielding all said solder from direct exposure to electromagnetic radiation transmitted through said window; and means extending from said sleeve for forming a vacuum connection with said waveguide system.
Claim 3
Dependent Claim
23 words
The radiofrequency window assembly of claim 1, wherein the thickness of said window is 2 to 3 times the width of said groove.
Claim 4
Dependent Claim
108 words
The radiofrequency window assembly of claim 1, wherein said sleeve has a thin wall and said means extending from said sleeve includes supporting means for said sleeve, and first and second weld flanges extending from said supporting means, and said waveguide system includes first and second waveguide arms, and third and fourth weld flanges extending respectively from said first and second waveguide arms for mating engagement with said first and second flanges respectively, said first and third flanges being welded together at their outer edges to form a vacuum seal, and said second and fourth flanges being welded together at their outer edges to form a vacuum seal.
Claim 5
Dependent Claim
33 words
The assembly of claim 3 further including means remote from said sleeve for maintaining the inner surface of said sleeve and the inner surface of said waveguides electrically continuous with respect to microwaves.
Claim 6
Dependent Claim
64 words
The assembly of claim 4, wherein said remote means includes first and second window flanges extending from said first and second waveguide arms respectively, said sleeve being mounted between said first and second window flanges, and a pair of clamping rings with said window flanges mounted therebetween, and means for forcing said clamping rings together to firmly hold said sleeve between said window flanges.
Claim 7
Dependent Claim
47 words
The assembly of claim 5 wherein said supporting means is a pair of supporting rings brazed to said sleeve for carrying said first and second weld flanges and for supporting said sleeve adjacent the ends of the sleeve near their point of contact with said window flanges.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |