Patent US3671162A successfully refreshed from Google Patents.
US3671162A
Expired / Lapsed
US
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Nozzle construction for injection molding machines
Assignee: Mannesmann Meer AG
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Filing: 1971-04-26
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Granted: 1972-06-20
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Expires: 1991-04-26
Abstract
Abstract AN INJECTION MOLDING MACHINE WITH TWO MOLDS ARE FILLED IN TANDEM OPERATION BY A COMMON INJECTION UNIT WITH A DISTRIBUTOR AND TWO NOZZLES. THESE NOZZLES CONSTRUCTED IN THAT TUBULAR NOZZLE TORPEDOES EXTEND FROM EACH MOLD SPRUE AND ARE TELESCOPICALLY RECEIVED BY HEADS ON THE DISTRIBUTOR, OPENING AND CLOSING CHANNELS IN THE NOZZLE TORPEDOES IN DEPENDENCE UPON THE POSITION OF THE INJECTION UNIT BETWEEN THE TWO MOLDS. SPRING BIASED STOPPER PINS IN THE TORPEDOES OPEN AND CLOSE THE SPRUES IN DEPENDENCE UPON PRESSURE WITHIN THE TORPEDOES. THAT PRESSURE DEVELOPS IN DEPENDENCE UPON CHANNEL OPENING AND CLOSING.
Inventors
- 👤 Albert Lohmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:15
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/20; B29C45/23; B29C45/231; B29C45/03; B29C45/12; B29C45/125; B29C45/26; B29C45/27; B29C45/28; B29C45/2806; Y; Y10; Y10S; Y10S264/00; Y10S264/83
Claims Analysis
Total Claims: 0
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |