US3412186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the manufacture of hollow articles of thermoplastic material
Assignee: Worson SA
•
Filing: 1966-05-27
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Granted: 1968-11-19
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Expires: 1986-05-27
Abstract
No abstract record available.
Inventors
- 👤 Piotrowski Tadeusz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:56
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/027; B; B29; B29C; B29C49/00; B29C49/02; B29C49/06; B29C49/061; B29C49/062; B29C49/063; B29C49/064; B29C49/42; B29C49/48; B29C49/4823; B29C51/00; B29C51/02; C07C; C07C51/00; C07C51/09; B29C2049/023; B29C2049/4838; B29C2049/4846; B29C2049/4848
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A METHOD OF FORMING HOLLOW ARTICLES OF THERMOPLASTIC MATERIAL COMPRISING THE STEPS OF INJECTING SAID THERMOPLASTIC MATERIAL ONTO AT LEAST ONE PREFORM CORE CONTAINED IN AN INJECTION CHAMBER, SIMULTANEOUSLY BLOWING A THERMOPLASTIC PREFORM CONTAINED ON AT LEAST ONE SECOND PREFORM CORE IN A BLOWING MOLD BY MEANS OF A FLUID UNDER PRESSURE, THE BASE OF SAID SECOND PREFORM CORE BEING DISPOSED OPPOSED TO THE BASE OF SAID FIRST PREFORM CORE, THE BASES OF BOTH CORES BEING DISPOSED ON A COMMON PLATE, SIMULTANEOUSLY WITHDRAWING, BY TRANSLATIONAL MOTION, THE INJECTION MOLD AND THE BLOW MOLD CONTAINING THE FINISHED ARTICLE FROM THE FIRST AND SECOND PREFORM CORES, SAID BLOW MOLD ALSO SIMULTANEOUSLY SEPARATING TO PERMIT THE FINISHED ARTICLE TO FALL FROM THE MOLD, ROTATING THE PLATE CONTAINING SAID PREFORM CORES ABOUT AN AXIS NORMAL TO THE TRANSLATIONAL MOTION AND INSERTING, BY TRANSLATIONAL MOTION, SAID FIRST CORE INTO THE BLOWING MOLD AND SAID SECOND CORE INTO THE INJECTION MOLD.
Claim 2
Independent Claim
155 words
A METHOD OF FORMING HOLLOW ARTICLES OF THERMOPLASTIC MATERIAL COMPRISING THE STEPS OF INJECTING SAID THERMOPLASTIC MATERIAL ONTO AT LEAST ONE PREFORM CORE CONTAINED IN AN INJECTION CHAMBER, SIMULTANEOUSLY BLOWING A THERMOPLASTIC PREFORM CONTAINED ON AT LEAST ONE SECOND PREFORM CORE IN A BLOWING MOLD BY MEANS OF A FLUID UNDER PRESSURE, THE BASE OF SAID SECOND PREFORM CORE BEING DISPOSED OPPOSED TO THE BASE OF SAID FIRST PREFORM CORE, THE BASES OF BOTH CORES BEING DISPOSED ON A COMMON PLATE, SIMULTANEOUSLY WITHDRAWING, BY TRANSLATIONAL MOTION, THE INJECTION MOLD AND THE BLOW MOLD CONTAINING THE FINISHED ARTICLE FROM THE FIRST AND SECOND PREFORM CORES, SAID BLOW MOLD ALSO SIMULTANEOUSLY SEPARATING TO PERMIT THE FINISHED ARTICLE TO FALL FROM THE MOLD, ROTATING THE PLATE CONTAINING SAID PREFORM CORES ABOUT AN AXIS NORMAL TO THE TRANSLATIONAL MOTION AND INSERTING, BY TRANSLATIONAL MOTION, SAID FIRST CORE INTO THE BLOWING MOLD AND SAID SECOND CORE INTO THE INJECTION MOLD.
References Cited (Backward Citations)
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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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |