US2583665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas blanketed arc welding
Assignee: Union Carbide Corp
•
Filing: 1949-07-09
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Granted: 1952-01-29
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Expires: 1969-07-09
Abstract
No abstract record available.
Inventors
- 👤 Frank J Pilia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:47
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
GAS BLANKETED ARC METHOD OF FUSION SPOT WELDING WHICH COMPRISES ADVANCING A GAS CONFINING NOZZLE TO BRING ITS RIM INTO CONTACT WITH THE METAL TO BE WELDED TO SURROUND A SPOT THEREON, SIMULTANEOUSLY DIRECTING NON-DEPOSITING ELECTRODE INSIDE OF AND CONCENTRIC WITH SAID NOZZLE TOWARD THE CENTER OF SAID SPOT, POSITIONING SAID ELECTRODE WITH ITS TIP SPACED FROM THE SPOT AND SPACED BACK FROM THE NOZZLE RIM, EXERTING PRESSURE ON SAID NOZZLE TO CAUSE A RING OF PRESSURE CONTACT BETWEEN SAID NOZZLE RIM AND THE WORK AND SURROUNDING SAID SPOT TO STEADY SAID NOZZLE AND HOLD THE WORK IN POSITION, MAINTAINING A LAYER OF NON-ODIXIZING GAS ABOVE SAID NOZZLE RIM AND BELOW SAID ELECTRODE TIP AND EXTENDING OVER SAID SPOT, STRIKING AN ARC BETWEEN SAID ELECTRODE TIP AND SAID SPOT AND THROUGH SAID LAYER OF NONOXIDIZING GAS, MAINTAINING SAID ARC UNTIL SAID SPOT IS HEATED TO FUSION TEMPERATURE AND MOLTEN PORTIONS OF THE WORK COALESCE, AND MAINTAINING SAID
Claim 2
Dependent Claim
157 words
GAS BLANKETED ARC METHOD OF FUSION SPOT WELDING WHICH COMPRISES ADVANCING A GAS CONFINING NOZZLE TO BRING ITS RIM INTO CONTACT WITH THE METAL TO BE WELDED TO SURROUND A SPOT THEREON, SIMULTANEOUSLY DIRECTING NON-DEPOSITING ELECTRODE INSIDE OF AND CONCENTRIC WITH SAID NOZZLE TOWARD THE CENTER OF SAID SPOT, POSITIONING SAID ELECTRODE WITH ITS TIP SPACED FROM THE SPOT AND SPACED BACK FROM THE NOZZLE RIM, EXERTING PRESSURE ON SAID NOZZLE TO CAUSE A RING OF PRESSURE CONTACT BETWEEN SAID NOZZLE RIM AND THE WORK AND SURROUNDING SAID SPOT TO STEADY SAID NOZZLE AND HOLD THE WORK IN POSITION, MAINTAINING A LAYER OF NON-ODIXIZING GAS ABOVE SAID NOZZLE RIM AND BELOW SAID ELECTRODE TIP AND EXTENDING OVER SAID SPOT, STRIKING AN ARC BETWEEN SAID ELECTRODE TIP AND SAID SPOT AND THROUGH SAID LAYER OF NONOXIDIZING GAS, MAINTAINING SAID ARC UNTIL SAID SPOT IS HEATED TO FUSION TEMPERATURE AND MOLTEN PORTIONS OF THE WORK COALESCE, AND MAINTAINING SAID
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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) | 1955-01-28 | 1955-07-30 | 1956-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-28 | 1959-07-30 | 1960-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-28 | 1963-07-30 | 1964-01-29 | $7700.00 | Window Closed / Lapsed |