Patent US2719207A successfully refreshed from Google Patents.
US2719207A
Expired / Lapsed
US
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Apparatus and method for producing a non-oxidizing atmosphere for flash welding
Assignee: AO Smith Corp
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Filing: 1953-01-23
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Granted: 1955-09-27
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Expires: 1973-01-23
Abstract
No abstract record available.
Inventors
- 👤 Harris P Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:20
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SHIELD FOR USE WITH A WELDING APPARATUS ADAPTED TO WELD THE ENDS OF TWO METAL SECTIONS TOGETHER, SAID ENDS TO BE WELDED BEING HELD IN OPPOSED ALIGNED RELATIONSHIP BY A PAIR OF CLAMPING MEMBERS AND ADAPTED TO BE BROUGHT INTO CONTACTING RELATION AS SAID CLAMPING MEMBERS ARE MOVED RELATIVE TO EACH OTHER, SAID SHIELD COMPRISING A MASS OF POROUS, SUBSTANTIALLY INERT, COMPRESSIBLE MATERIAL EXTENDING BETWEEN SAID PAIR OF CLAMPING MEMBERS AND HAVING A LONGITUDINAL OPENING THERETHROUGH, SAID ENDS TO BE WELDED BEING DISPOSED WITHIN SAID OPENING AND SPACED FROM SAID MASS OF MATERIAL, AND MEANS TO PURGE SAID OPENING WITH NON-OXIDIZING GASES PRIOR TO AND DURING WELDING TO REMOVE OXIDIZING AGENTS THEREFROM OUTWARDLY THROUGH THE POROUS MATERIAL AND PREVENT THE FORMATION OF OXIDE INCLUSIONS IN THE WELD.
Claim 2
Dependent Claim
128 words
A SHIELD FOR USE WITH A WELDING APPARATUS ADAPTED TO WELD THE ENDS OF TWO METAL SECTIONS TOGETHER, SAID ENDS TO BE WELDED BEING HELD IN OPPOSED ALIGNED RELATIONSHIP BY A PAIR OF CLAMPING MEMBERS AND ADAPTED TO BE BROUGHT INTO CONTACTING RELATION AS SAID CLAMPING MEMBERS ARE MOVED RELATIVE TO EACH OTHER, SAID SHIELD COMPRISING A MASS OF POROUS, SUBSTANTIALLY INERT, COMPRESSIBLE MATERIAL EXTENDING BETWEEN SAID PAIR OF CLAMPING MEMBERS AND HAVING A LONGITUDINAL OPENING THERETHROUGH, SAID ENDS TO BE WELDED BEING DISPOSED WITHIN SAID OPENING AND SPACED FROM SAID MASS OF MATERIAL, AND MEANS TO PURGE SAID OPENING WITH NON-OXIDIZING GASES PRIOR TO AND DURING WELDING TO REMOVE OXIDIZING AGENTS THEREFROM OUTWARDLY THROUGH THE POROUS MATERIAL AND PREVENT THE FORMATION OF OXIDE INCLUSIONS IN THE WELD.
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) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |