Patent US3672033A successfully refreshed from Google Patents.
US3672033A
Expired / Lapsed
US
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Metal laminated material and process for its manufacture
Assignee: Dynamit Nobel AG
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Filing: 1970-01-08
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Granted: 1972-06-27
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Expires: 1990-01-08
Abstract
Abstract The present disclosure is directed to a laminated metallic composite and to a process for the production of said composites which comprises placing metallic spacers between the metal sheets to be bonded, said spacers being wound in a helical shape from a wire with the axis of the spirals oriented substantially parallel with respect to the metal sheets, applying a layer of explosive to the upper sheet of metal and detonating said explosive to produce impingement and welding of the upper sheet with the remaining sheets.
Inventors
- 👤 Ulf Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:06
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/06; B23K20/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
23 words
The process of claim 1, wherein the spacers are made of the material of one of the metal sheets to be bonded together.
Claim 2
Dependent Claim
28 words
The process of claim 1, wherein the spacers are made of a material which does not form any brittle alloYs with the metal sheets to be bonded together.
Claim 3
Dependent Claim
20 words
The process of claim 1, wherein the spacers are made of a soft iron wire hardened during the coiling step.
Claim 4
Dependent Claim
20 words
The process of claim 1, wherein the metallic sheets are titanium and the metallic spacers are formed of soft iron.
Claim 5
Dependent Claim
26 words
The process of claim 1, wherein the wire has a diameter of about 0.3 mm and the helical shape has a diameter of about 3 mm.
Claim 6
Dependent Claim
29 words
The process of claim 1, wherein the wire is pulled apart to about five times its original length and cut into sections before being placed between the metal sheets.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |