Patent US2753596A successfully refreshed from Google Patents.
US2753596A
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Method and apparatus for making plastic tubing
Assignee: Plax Corp
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Filing: 1952-06-07
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Granted: 1956-07-10
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Expires: 1972-06-07
Abstract
No abstract record available.
Inventors
- 👤 Bailey James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:39
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/16; B29C48/18; B29C48/21; B29C48/001; B29C48/0013; B29C48/0015; B29C48/03; B29C48/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
APPARATUS FOR FORMING TUBING OF THERMOPLASTIC MATERIAL WHICH INCLUDES AN EXTRUDER, A DIE HAVING A PLURALITY OF ANNULAR AND GENERALLY CONCENTRICALLY DISPOSED DIE ORIFICES THROUGH WHICH TO EXTRUDE THE PLASTIC MATERIAL AS A PLURALITY OF GENERALLY CONCENTRIC SEPARATE AND INDEPENDENT HEATED PLASTIC TUBES, AND MEANS FOR EXPANDING AND PRESSING THE HOT PLASTIC TUBES INTO BONDING ENGAGEMENT WITH ONE ANOTHER.
Claim 2
Dependent Claim
59 words
APPARATUS FOR FORMING TUBING OF THERMOPLASTIC MATERIAL WHICH INCLUDES AN EXTRUDER, A DIE HAVING A PLURALITY OF ANNULAR AND GENERALLY CONCENTRICALLY DISPOSED DIE ORIFICES THROUGH WHICH TO EXTRUDE THE PLASTIC MATERIAL AS A PLURALITY OF GENERALLY CONCENTRIC SEPARATE AND INDEPENDENT HEATED PLASTIC TUBES, AND MEANS FOR EXPANDING AND PRESSING THE HOT PLASTIC TUBES INTO BONDING ENGAGEMENT WITH ONE ANOTHER.
References Cited (Backward Citations)
US1637207A
Cited
US1994164A
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US2592658A
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US2513106A
Cited
US2501690A
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US2529897A
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US2632205A
Cited
US2550555A
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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) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |