US3420930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of drawing cup-shaped articles
Assignee: Continental Can Co Inc
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Filing: 1965-09-16
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Granted: 1969-01-07
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Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 Randolph D Lurie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:55
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/20; B21D22/28; B29; B29C; B29C43/00; B29C43/02; B29C43/021; B29C51/00; B29C51/08; B29C51/082; B65; B65D; B65D1/00; B65D1/22; B65D1/26; B65D1/265; B29C43/32; B29C43/36; B29C43/361; B29C2043/3615
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF PRODUCING A REDRAWN PLASTIC CUPSHAPED ARTICLE COMPRISING THE STEPS OF DRAWING A CUPSHAPED ARTICLE, REDRAWING THE CUP-SHAPED ARTICLE AT AMBIENT TEMPERATURE, BETWEEN A ROUGH EXTERIOR SURFACED MALE DIE AND AN AXIALLY ALIGNED SMOOTH SURFACED INTERIOR DIE WALL OF A FEMALE DIE TO FORM A PLURALITY OF CLOSELY SPACED RAISED AREAS ONLY UPON AN INTERIOR PERIPHERAL SURFACE OF THE CUP-SHAPED BODY INCIDENT TO THE REDRAWING THEREOF WHEREBY SAID CUP-SHAPED ARTICLE IS GENERALLY OF A UNIFORM WALL THICKNESS AND NECKING-DOWN IS PRECLUDED.
Claim 2
Independent Claim
83 words
A METHOD OF PRODUCING A REDRAWN PLASTIC CUPSHAPED ARTICLE COMPRISING THE STEPS OF DRAWING A CUPSHAPED ARTICLE, REDRAWING THE CUP-SHAPED ARTICLE AT AMBIENT TEMPERATURE, BETWEEN A ROUGH EXTERIOR SURFACED MALE DIE AND AN AXIALLY ALIGNED SMOOTH SURFACED INTERIOR DIE WALL OF A FEMALE DIE TO FORM A PLURALITY OF CLOSELY SPACED RAISED AREAS ONLY UPON AN INTERIOR PERIPHERAL SURFACE OF THE CUP-SHAPED BODY INCIDENT TO THE REDRAWING THEREOF WHEREBY SAID CUP-SHAPED ARTICLE IS GENERALLY OF A UNIFORM WALL THICKNESS AND NECKING-DOWN IS PRECLUDED.
References Cited (Backward Citations)
US2760231A
Cited
GB796821A
Cited
US2925625A
Cited
US3103170A
Cited
US3184524A
Cited
US3231937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |