Patent US3236341A successfully refreshed from Google Patents.
US3236341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum-tight joint
Assignee: Thales SA
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Filing: 1962-08-10
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Granted: 1966-02-22
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Expires: 1982-08-10
Abstract
No abstract record available.
Inventors
- 👤 Chopinet Guy
- 👤 Dumon Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:53
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/0026; B23K9/0035; B23K9/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
115 words
A METHOD OF PRODUCING A VACUUM-TIGHT JOINT BETWEEN TWO METAL SHEETS, COMPRISING THE STEPS OF ESTABLISHING A GROOVE IN THE SURFACE OF EACH OF SAID SHEETS NEAR ONE EDGE THEREOF AND SUBSTANTIALLY PARALLEL THERETO AT SUBSTANTIALLY THE SAME DISTANCE FROM A RESPECTIVE EDGE, BENDING THE TERMINAL PORTION OF EACH OF SAID SHEETS PROVIDED WITH SAID GROOVE, APPLYING SAID BENT POTIONS ONE AGAINST THE OTHER SO AS TO CAUSE SUBSTANTIAL COINCIDENCE OF THE EDGES OF BOTH SHEETS WHEREBY THE GROOVES IN BOTH SPACED MUTUALLY COMPLETE EACH OTHER TO FORM A CLOSED SPACE WITHIN THE METAL OF SAID BENT PORTIONS, AND MELTING SAID EDGES FOR WELDING TOGETHER SAID SHEETS WHEREBY MOLTEN METAL COLLAPSES INTO SAID CLOSED SPACE.
Claim 2
Independent Claim
115 words
A METHOD OF PRODUCING A VACUUM-TIGHT JOINT BETWEEN TWO METAL SHEETS, COMPRISING THE STEPS OF ESTABLISHING A GROOVE IN THE SURFACE OF EACH OF SAID SHEETS NEAR ONE EDGE THEREOF AND SUBSTANTIALLY PARALLEL THERETO AT SUBSTANTIALLY THE SAME DISTANCE FROM A RESPECTIVE EDGE, BENDING THE TERMINAL PORTION OF EACH OF SAID SHEETS PROVIDED WITH SAID GROOVE, APPLYING SAID BENT POTIONS ONE AGAINST THE OTHER SO AS TO CAUSE SUBSTANTIAL COINCIDENCE OF THE EDGES OF BOTH SHEETS WHEREBY THE GROOVES IN BOTH SPACED MUTUALLY COMPLETE EACH OTHER TO FORM A CLOSED SPACE WITHIN THE METAL OF SAID BENT PORTIONS, AND MELTING SAID EDGES FOR WELDING TOGETHER SAID SHEETS WHEREBY MOLTEN METAL COLLAPSES INTO SAID CLOSED SPACE.
Claim 3
Dependent Claim
60 words
A VACUUM-TIGHT JOINT BETWEEN TWO METALLIC SHEETS PROVIDED WITH CUT-OUT PORTIONS IN MUTUALLY FACING SURFACES THEREOF SPACED FROM RESPECTIVE EDGES, SAID CUT-OUT PORTIONS BEING ALIGNED SO AS TO APPROXIMATELY COMPLETE EACH OTHER TO FORM A SPACE WITHIN THE METAL OF SAID SHEETS, AND A WELDED SEAM ALONG SAID EDGES WITH SOME SOLIDIFIED METAL OF THE SEAM COLLAPSED INTO SAID SPACE.
Claim 4
Dependent Claim
60 words
A VACUUM-TIGHT JOINT BETWEEN TWO METALLIC SHEETS PROVIDED WITH CUT-OUT PORTIONS IN MUTUALLY FACING SURFACES THEREOF SPACED FROM RESPECTIVE EDGES, SAID CUT-OUT PORTIONS BEING ALIGNED SO AS TO APPROXIMATELY COMPLETE EACH OTHER TO FORM A SPACE WITHIN THE METAL OF SAID SHEETS, AND A WELDED SEAM ALONG SAID EDGES WITH SOME SOLIDIFIED METAL OF THE SEAM COLLAPSED INTO SAID SPACE.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |