Patent US3310620A successfully refreshed from Google Patents.
US3310620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of hollow articles
Assignee: Solvay SA
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Filing: 1964-06-09
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Granted: 1967-03-21
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Expires: 1984-06-09
Abstract
No abstract record available.
Inventors
- 👤 Martelli Nerio
- 👤 Colinet Edouard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:08
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/0015; B29C49/0021; B29C2791/00; B29C2791/004; B29C2791/006; B29C49/42; B29C49/48; B29C49/48185; B29L; B29L2023/00; B29L2023/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A PROCESS FOR THE CONTINUOUS MANUFACTURE OF HOLLOW ARTICLES OF A PLASTIC MATERIAL COMPRISING SHAPING A HOLLOW TUBE OF SAID PLASTIC MATERIAL, WHILE IN A PLASTIC STATE, BETWEEN TWO GROUPS OF COMPLEMENTARY HALF-MOLDS WHICH CONSTITUTE MOLD ASSEMBLIES AND ARE MOVABLE WITH THE TUBE IN A LONGITUDINAL DIRECTION OF ADVANCE, THE MOLDS OF EACH OF SAID GROUPS BEING SERIALLY ARRANGED AND EACH OF SAID MOLDS HAVING A BEVELLED EDGE, THE IMPROVEMENT COMPRISING FIXEDLY ARRANGING A FRUSTOCONICAL ELEMENT IN THE INTERIOR OF SAID TUBE AT A PORTION OF SAID TUBE AT WHICH SAID TUBE HAS BEEN SHAPED INTO SAID HOLLOW ARTICLES AND IS STILL IN A SUFFICIENTLY PLASTIC STATE TO BE READILY SHEARED, SAID PORTION BEING LOCATED BETWEEN TWO SUCCESSIVE ONES OF SAID MOLD ASSEMBLIES, AND SHEARING SAID TUBE BETWEEN SAID BEVELLED EDGES AND SAID FRUSTOCONICAL ELEMENT AT SAID PORTION WHILE ADVANCING SAID ASSEMBLIES.
Claim 2
Dependent Claim
143 words
IN A PROCESS FOR THE CONTINUOUS MANUFACTURE OF HOLLOW ARTICLES OF A PLASTIC MATERIAL COMPRISING SHAPING A HOLLOW TUBE OF SAID PLASTIC MATERIAL, WHILE IN A PLASTIC STATE, BETWEEN TWO GROUPS OF COMPLEMENTARY HALF-MOLDS WHICH CONSTITUTE MOLD ASSEMBLIES AND ARE MOVABLE WITH THE TUBE IN A LONGITUDINAL DIRECTION OF ADVANCE, THE MOLDS OF EACH OF SAID GROUPS BEING SERIALLY ARRANGED AND EACH OF SAID MOLDS HAVING A BEVELLED EDGE, THE IMPROVEMENT COMPRISING FIXEDLY ARRANGING A FRUSTOCONICAL ELEMENT IN THE INTERIOR OF SAID TUBE AT A PORTION OF SAID TUBE AT WHICH SAID TUBE HAS BEEN SHAPED INTO SAID HOLLOW ARTICLES AND IS STILL IN A SUFFICIENTLY PLASTIC STATE TO BE READILY SHEARED, SAID PORTION BEING LOCATED BETWEEN TWO SUCCESSIVE ONES OF SAID MOLD ASSEMBLIES, AND SHEARING SAID TUBE BETWEEN SAID BEVELLED EDGES AND SAID FRUSTOCONICAL ELEMENT AT SAID PORTION WHILE ADVANCING SAID ASSEMBLIES.
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |