Patent US3267780A successfully refreshed from Google Patents.
US3267780A
Expired / Lapsed
US
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Electrohydraulic impulse scoring and/or weakening of thin materials
Assignee: Continental Can Co Inc
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Filing: 1965-03-25
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Granted: 1966-08-23
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Expires: 1985-03-25
Abstract
No abstract record available.
Inventors
- 👤 Donald J Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:03
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/383; B21D26/00; B21D26/02; B21D26/06; B21D26/12; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0333; Y10T83/0341; Y10T83/04; Y10T83/0591; Y10T83/364; Y10T83/869; Y10T83/8752; Y10T83/8755; Y10T83/8821; Y10T83/8858; Y10T83/8861
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
MATERIAL SCORING APPARATUS COMPRISING A FLUID FILLED CHAMBER HAVING AN OPEN END, A SCORING DIE POSITIONED OVER SAID CHAMBER AND COEXTENSIVE WITH THE OPEN END, SAID DIE BEING AN SPATIAL RELATIONSHIP TO SAID CHAMBER AND DEFINING A WORK AREA THEREBETWEEN, AND MEANS FOR DISPLACING THE FLUID IN SAID CHAMBER TO EXERT A FORCE ON SAID SCORING DIE.
Claim 2
Dependent Claim
57 words
MATERIAL SCORING APPARATUS COMPRISING A FLUID FILLED CHAMBER HAVING AN OPEN END, A SCORING DIE POSITIONED OVER SAID CHAMBER AND COEXTENSIVE WITH THE OPEN END, SAID DIE BEING AN SPATIAL RELATIONSHIP TO SAID CHAMBER AND DEFINING A WORK AREA THEREBETWEEN, AND MEANS FOR DISPLACING THE FLUID IN SAID CHAMBER TO EXERT A FORCE ON SAID SCORING DIE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |