US2819381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of welding
Assignee: Cleveland Pneumatic Tool Co
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Filing: 1955-04-14
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Granted: 1958-01-07
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Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Lindow
- 👤 Ian R Sutherland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:08
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF UPSET WELDING TWO PIECES OF METAL COMPRISING FORMING COMPLEMENTARY SURFACES ON EACH OF SAID PIECES, PLATING SAID SURFACES WITH NICKEL, PRESSING SAID PLATED SURFACES TOGETHER WITH A SUFFICIENT FORCE TO UPSET THE NICKEL AND PRODUCE INTIMATE CONTACT OVER THE ENTIRE AREA OF ENGAGEMENT THEREBETWEEN, AND THEREAFTER PASSING AN ELECTRICAL CURRENT BETWEEN SAID PIECES WHILE THEY ARE PRESSED TOGETHER THEREBY HEATING SAID NICKEL AND THE PORTIONS OF SAID PIECES ADJACENT THERETO UNTIL THEY WELD TOGETHER AND THE NICKEL FUSES INTO THE PIECES.
Claim 2
Independent Claim
84 words
A METHOD OF UPSET WELDING TWO PIECES OF METAL COMPRISING FORMING COMPLEMENTARY SURFACES ON EACH OF SAID PIECES, PLATING SAID SURFACES WITH NICKEL, PRESSING SAID PLATED SURFACES TOGETHER WITH A SUFFICIENT FORCE TO UPSET THE NICKEL AND PRODUCE INTIMATE CONTACT OVER THE ENTIRE AREA OF ENGAGEMENT THEREBETWEEN, AND THEREAFTER PASSING AN ELECTRICAL CURRENT BETWEEN SAID PIECES WHILE THEY ARE PRESSED TOGETHER THEREBY HEATING SAID NICKEL AND THE PORTIONS OF SAID PIECES ADJACENT THERETO UNTIL THEY WELD TOGETHER AND THE NICKEL FUSES INTO THE PIECES.
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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |