US3089187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of improved thermoplastic pipe
Assignee: EIDP Inc
•
Filing: 1960-05-06
•
Granted: 1963-05-14
•
Expires: 1980-05-06
Abstract
No abstract record available.
Inventors
- 👤 Wolfe Paul Dillon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:19
CPC Classifications
B; B29; B29C; B29C67/00; B29C48/00; B29C48/001; B29C48/03; B29C48/09; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C55/00; B29C55/22; B29C55/26; B29C48/0018; B29C48/0022; B29C48/10; B29C48/16; B29C48/18; B29C48/23; B29K; B29K2059/00; B29K2077/00; B29K2995/00; B29K2995/0037; B29K2995/0072; Y; Y10; Y10S; Y10S264/00; Y10S264/68
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
AN APPARATUS FOR THE MANUFACTURE OF PIPE FROM THERMOPLASTIC MATERIAL WHICH COMPRISES, IN COMBINATION, AN EXTRUDER, A CROSSHEAD ATTACHED TO THE SAID EXTRUDER, A DIE ATTACHED TO THE SAID CROSSHEAD, A CORE PARTLY WITHIN THE SAID DIE, SUPPORTING MEANS ATTACHED TO THE SAID CORE, A HEAD FLARED OUTWARDLY AWAY FROM SAID EXTRUDER ATTACHED TO SAID SUPPORTING MEANS, CONICAL ROLLERS SPACED ABOUT THE SAID FLARE, MEANS TO DRIVE THE SAID ROLLERS SUBSTANTIALLY EPICYCLICLY ABOUT THE SAID FLATED HEAD, MEANS TO PASS
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |