US3131661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive forming of articles
Assignee: AO Smith Corp
•
Filing: 1960-04-20
•
Granted: 1964-05-05
•
Expires: 1980-04-20
Abstract
No abstract record available.
Inventors
- 👤 Neil B Granberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:48
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN THE METHOD OF EXPLOSIVE FORMING AN ARTICLE HAVING AN IRREGULAR CONTOUR BY IGNITING AN EXPLOSIVE CHARGE WITHIN AN IRREGULARLY SHAPED CONFINING CAVITY TO FORCE A BLANK INTO ENGAGEMENT WITH THE WALL OF THE CAVITY, PROVIDING AN IMPACT WAVE TRANSMITTING MEMBER WITH AN INNER CHARGE RECEIVING CHAMBER OF NON-UNIFORM CROSS SECTION ARRANGED TO IRREGULARLY SHAPE THE CHARGE AND DISTRIBUTE THE INTENSITY OF THE IMPACT FORMING WAVE WITHIN THE CAVITY, MOUNTING THE WAVE TRANSMITTING MEMBER WITHIN THE CAVITY WITH THE BLANK BETWEEN THE MEMBER AND THE CAVITY, FILLING THE IRREGULARLY SHAPED CHARGE CHAMBER WITH A MIXTURE OF SUBSTANCES WHICH ARE ONLY EXPLOSIVE WHEN COMBINED TO PROVIDE AN IRREGULARLY SHAPED CHARGE HAVING ITS GREATEST DENSITY ADJACENT THOSE PORTIONS OF THE BLANK WHERE THE GREATEST FORMING FORCE IS REQUIRED, AND IGNITING THE CHARGE DISPOSED WITHIN THE CHAMBER.
Claim 2
Dependent Claim
134 words
IN THE METHOD OF EXPLOSIVE FORMING AN ARTICLE HAVING AN IRREGULAR CONTOUR BY IGNITING AN EXPLOSIVE CHARGE WITHIN AN IRREGULARLY SHAPED CONFINING CAVITY TO FORCE A BLANK INTO ENGAGEMENT WITH THE WALL OF THE CAVITY, PROVIDING AN IMPACT WAVE TRANSMITTING MEMBER WITH AN INNER CHARGE RECEIVING CHAMBER OF NON-UNIFORM CROSS SECTION ARRANGED TO IRREGULARLY SHAPE THE CHARGE AND DISTRIBUTE THE INTENSITY OF THE IMPACT FORMING WAVE WITHIN THE CAVITY, MOUNTING THE WAVE TRANSMITTING MEMBER WITHIN THE CAVITY WITH THE BLANK BETWEEN THE MEMBER AND THE CAVITY, FILLING THE IRREGULARLY SHAPED CHARGE CHAMBER WITH A MIXTURE OF SUBSTANCES WHICH ARE ONLY EXPLOSIVE WHEN COMBINED TO PROVIDE AN IRREGULARLY SHAPED CHARGE HAVING ITS GREATEST DENSITY ADJACENT THOSE PORTIONS OF THE BLANK WHERE THE GREATEST FORMING FORCE IS REQUIRED, AND IGNITING THE CHARGE DISPOSED WITHIN THE CHAMBER.
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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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |