Patent US3112391A successfully refreshed from Google Patents.
US3112391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zeroing system for electron gun
Assignee: Welding Research Inc
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Filing: 1961-10-27
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Granted: 1963-11-26
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 Sciaky David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:22
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/16; B; B23; B23K; B23K15/00; B23K15/0013; H01J37/244; H01J37/30; H01J37/3002; H01J2237/00; H01J2237/244; H01J2237/2446; H01J2237/245; H01J2237/24507; H01J2237/24571; H01J2237/24578; Y; Y10; Y10S; Y10S164/00; Y10S164/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A ZEROING ASSEMBLY FOR USE IN THE ELECTRON WELDING OF METALS WITHIN A VACUUM CHAMBER, THE COMBINATION INCLUDING A TOP SECTION OF METAL AND A BASE SECTION OF METAL SPACED FROM THE TOP SECTION, A SPACING ELEMENT OF INSULATING MATERIAL LOCATED BETWEEN THE TOP AND BOTTOM SECTIONS, SAID TOP AND BOTTOM SECTIONS EACH HAVING AN OPENING THEREIN IN SUBSTANTIAL VERTICAL ALIGNMENT AND SAID SPACING ELEMENT COMPRISING A RING WITH THE CENTER OPENING THEREOF ALSO IN VERTICAL ALIGNMENT WITH THE OPENINGS IN THE SECTIONS, AN AMMETER IN ELECTRICAL CONNECTION WITH THE SECTIONS, AND SAID BOTTOM SECTION BEING ADAPTED TO SUPPORT A WORKPIECE BY POSITIONING THE SAME IN THE OPENING IN THE BOTTOM SECTION, WHEREBY AN ELECTRON BEAM IN PASSING THROUGH THE OPENING IN THE TOP SECTION WILL BE ACCURATELY SPOTTED ON THE WORKPIECE.
Claim 2
Dependent Claim
132 words
A ZEROING ASSEMBLY FOR USE IN THE ELECTRON WELDING OF METALS WITHIN A VACUUM CHAMBER, THE COMBINATION INCLUDING A TOP SECTION OF METAL AND A BASE SECTION OF METAL SPACED FROM THE TOP SECTION, A SPACING ELEMENT OF INSULATING MATERIAL LOCATED BETWEEN THE TOP AND BOTTOM SECTIONS, SAID TOP AND BOTTOM SECTIONS EACH HAVING AN OPENING THEREIN IN SUBSTANTIAL VERTICAL ALIGNMENT AND SAID SPACING ELEMENT COMPRISING A RING WITH THE CENTER OPENING THEREOF ALSO IN VERTICAL ALIGNMENT WITH THE OPENINGS IN THE SECTIONS, AN AMMETER IN ELECTRICAL CONNECTION WITH THE SECTIONS, AND SAID BOTTOM SECTION BEING ADAPTED TO SUPPORT A WORKPIECE BY POSITIONING THE SAME IN THE OPENING IN THE BOTTOM SECTION, WHEREBY AN ELECTRON BEAM IN PASSING THROUGH THE OPENING IN THE TOP SECTION WILL BE ACCURATELY SPOTTED ON THE WORKPIECE.
References Cited (Backward Citations)
US1975997A
Cited
US2987610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |