Patent US2717103A successfully refreshed from Google Patents.
Patent US3664890A successfully refreshed from Google Patents.
US3664890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a deep drawn composite article
Assignee: Olin Corp
•
Filing: 1970-02-20
•
Granted: 1972-05-23
•
Expires: 1990-02-20
Abstract
Abstract A method of producing a deep drawn article wherein earing is eliminated or substantially lessened comprising integrally bonding a first metallic component having characteristic 45* earing propensity after deep drawing to a second metallic component having characteristic 90* earing propensity after deep drawing, and deep drawing, and the article produced thereby.
Inventors
- 👤 Joseph Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:49
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/001; B21; B21D; B21D22/00; B21D22/20; B21D22/203; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12986
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
15 words
The method of claim 1 wherein said annealing temperature is from 300* to 1,400* F.
Claim 2
Dependent Claim
23 words
The method of claim 1 wherein at least one additional metallic component is integrally bonded in step (B) to form a multi-component article.
Claim 3
Dependent Claim
25 words
The method of claim 2 wherein said first component and said second component ranges from 5 mils to 1 inch in thickness before step C.
Claim 4
Dependent Claim
25 words
The method of claim 4 wherein one of said components is from 5.0 to 50.0 percent of the total thickness of both of said components.
Claim 5
Dependent Claim
28 words
The method of claim 5 wherein said first metallic component and said second metallic component are selected from the group consisting of copper, aluminum, iron, and alloys thereof.
Claim 6
Dependent Claim
19 words
The method of claim 6 wherein said first metallic component is copper and said second metallic component is aluminum.
References Cited (Backward Citations)
US3490124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |