US3090995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruder for plastic tubing
Assignee: OI Glass Inc
•
Filing: 1961-06-01
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Granted: 1963-05-28
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Expires: 1981-06-01
Abstract
No abstract record available.
Inventors
- 👤 Donald L Amsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:46
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/10; B29C48/36; B29C48/475
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
PLASTIC TUBE FORMING APPARATUS COMPRISING AN ORIFICE BUSHING AND MANDREL POSITIONED RELATIVELY TO PROVIDE AN ANNULAR AXIALLY ELONGATED PASSAGEWAY WHICH PLASTIC MATETRIAL IS TO ENTER AS A PREFORMED TUBE OF PREDETERMINED WALL THICKNESS, TUBE FORMING AND WALL THICKNESS DIMENSIONING MEANS AXIALLY INWARD FROM SAID PASSAGEWAY INCLUDING AXIALLY SPACED-APART GENERALLY RADIALLY DISPOSED DISCHARGE ORIFICE FORMING SURFACES WHEREIN THE ORIFICE PROVIDES BOTH COMMUNICATION BETWEEN SAID PASSAGEWAY AND A SOURCE OF SUPPLY OF PLASTIC MATERIAL AND CONSTITUTES THE SOLE WALL THICKNESS CONTROL MEANS.
References Cited (Backward Citations)
US2626427A
Cited
US2750625A
Cited
US2632202A
Cited
US2780835A
Cited
US2871516A
Cited
US2890483A
Cited
US3019481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |