Patent US3146491A successfully refreshed from Google Patents.
US3146491A
Expired / Lapsed
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Production of hollow articles in thermoplastic material
Assignee: Compagnie de Saint Gobain SA
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Filing: 1961-07-24
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Granted: 1964-09-01
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Expires: 1981-07-24
Abstract
No abstract record available.
Inventors
- 👤 Eyquem Marcel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:13
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/48; B29C49/50; B29C48/00; B29C48/001; B29C48/0022; B29C2793/00; B29C2793/0027; B29C48/03; B29C48/09; B29C48/10; B29C48/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
IN AN APPARATUS FOR THE AUTOMATIC MANUFACTURE OF HOLLOW ARTICLES, A SPLIT HOLLOW MOLD HAVING PRINCIPALLY TWO RELATIVELY MOVABLE PARTS, A CUTTING APPARATUS COMPRISING A CUTTING BLADE SLIDING IN A HOUSING PROVIDED IN THE THICKNESS OF THE WALL OF ONE PART OF THE MOLD, A CAVITY IN THE OTHER PART OF THE MOLD ALIGNED WITH SAID BLADE FOR RECEIVING THE SAME, A STEM SUPPORTING THE BLADE, A COIL SPRING MOUNTED ON THE STEM, A COMMAND BAR SUPPORTING THE STEM AND ARTICULATED AT ONE END AND PROVIDED AT THE OTHER END WITH A ROLLER, AND ABUTMENT MEANS TO GUIDE THE ROLLER AT THE PROPER TIME.
References Cited (Backward Citations)
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US2810160A
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US2991500A
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US3025562A
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US3003187A
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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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |