US3100933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cold welding aluminum
Assignee: Motors Liquidation Co
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Filing: 1956-10-15
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Granted: 1963-08-20
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Expires: 1976-10-15
Abstract
No abstract record available.
Inventors
- 👤 James L Hancock
- 👤 Lee J Lakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:38
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G4/242; H01G4/245; B; B23; B23K; B23K20/00; B23K20/22; B23K20/233; B23K20/2336; H01R; H01R4/00; H01R4/58; H01R4/62; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
IN COLD PRESSURE WELDING OF A FIRST AND SECOND ALUMINUM MEMBER TO ONE ANOTHER WHEREIN EACH MEMBER HAS A COEXTENSIVE, EXTREMELY THEREIN, NATURAL ALUMINUM OXIDE FILM ON THE SURFACES THEREOF, THE ART WHICH INCLUDES FORMING A FRIABLE, ADHERENT, OXIDE FILM SUPERIMOPOSED UPON SAID THIN NATURAL OXIDE FILM ON ONE OF SAID MEMBERS, SUPERIMPOSING SAID MEMBER WITH THE FRIABLE, ADHERENT OXIDE FILM ON SAID ONE MEMBER IN FACE-TO-FACE CONTACT WITH THE NATURAL OXIDE FILM ON THE OTHER MEMBER, AND THEN COLD FORMING SAID MEMBERS BY APPLYING PRESSURE ACROSS SAID MEMBERS AND FILMS UNTIL SHATTERING OF SAID FILM OCCURS AND PLASTIC FLOW AND BONDING OF THE ADJACENT PORTIONS OF SAID MEMBERS IS PROMOTED.
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) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |