US3104420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masticator for plastic materials
Assignee: Gerhard Kestermann KG
•
Filing: 1961-12-05
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Granted: 1963-09-24
•
Expires: 1981-12-05
Abstract
No abstract record available.
Inventors
- 👤 Selbach Hans Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:23
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/46; B29B7/48; B29B7/484; B29B7/482; B29B7/488; B29B7/489; B29B7/80; B29B7/82; B29B7/826; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/40; B29C48/41; B29C48/50; B29C48/505; B29C48/53; B29C48/535; B29C48/64; B29C48/65
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A MASTICATOR FOR THE PLASTIFICATION OF MOLDABLE MATERIAL, COMPRISING A HOUSING WITH AT LEAST TWO MERGING SUBSTANTIALLY CYLINDRICAL CAVITIES, SAID HOUSING HAVING AN INPUT END AND AN OUTPUT END, A PAIR OF ROTATABLE WORMS IN CLOSE MESH WITH EACH OTHER, EACH WORM FITTING CLOSELY INSIDE A RESPECTIVE CAVITY, EACH WORM HAVING AT LEAST ONE PRINCIPAL HELICOIDAL THREAD OF SUBSTANTIALLY CONSTANT RADIUS AND AT LEAST ONE AUXILIARY THREAD INTERLEAVED WITH SAID PRINCIPAL THREAD INTERMEDIATE THE TURNS THEREOF AND SPACED THEREFROM, SAID AUXILIARY THREAD RISING PROGRESSIVELY FROM A MINIMUM RADIUS TO A MAXIMUM RADIUS, EACH WORM BEING FURTHER PROVIDED WITH A HELICOIDAL GROOVE CUTTING PROGRESSIVELY DEEPER INTO THE LAND OF ITS PRINCIPAL THREAD WHILE COMPLEMENTARILY RECEIVING THE AUXILIARY THREAD OF THE OTHER WORM, AND DRIVE MEANS FOR ROTATING SAID WORM IN A SENSE ADVANCING A CHARGE OF MOLDABLE MATERIAL FROM SAID INPUT END TO SAID OUTPUT END WHILE COMPACTING SAID CHARGE BETWEEN SAID AUXILIARY THREAD AND SAID HOUSING.
Claim 2
Dependent Claim
156 words
A MASTICATOR FOR THE PLASTIFICATION OF MOLDABLE MATERIAL, COMPRISING A HOUSING WITH AT LEAST TWO MERGING SUBSTANTIALLY CYLINDRICAL CAVITIES, SAID HOUSING HAVING AN INPUT END AND AN OUTPUT END, A PAIR OF ROTATABLE WORMS IN CLOSE MESH WITH EACH OTHER, EACH WORM FITTING CLOSELY INSIDE A RESPECTIVE CAVITY, EACH WORM HAVING AT LEAST ONE PRINCIPAL HELICOIDAL THREAD OF SUBSTANTIALLY CONSTANT RADIUS AND AT LEAST ONE AUXILIARY THREAD INTERLEAVED WITH SAID PRINCIPAL THREAD INTERMEDIATE THE TURNS THEREOF AND SPACED THEREFROM, SAID AUXILIARY THREAD RISING PROGRESSIVELY FROM A MINIMUM RADIUS TO A MAXIMUM RADIUS, EACH WORM BEING FURTHER PROVIDED WITH A HELICOIDAL GROOVE CUTTING PROGRESSIVELY DEEPER INTO THE LAND OF ITS PRINCIPAL THREAD WHILE COMPLEMENTARILY RECEIVING THE AUXILIARY THREAD OF THE OTHER WORM, AND DRIVE MEANS FOR ROTATING SAID WORM IN A SENSE ADVANCING A CHARGE OF MOLDABLE MATERIAL FROM SAID INPUT END TO SAID OUTPUT END WHILE COMPACTING SAID CHARGE BETWEEN SAID AUXILIARY THREAD AND SAID HOUSING.
References Cited (Backward Citations)
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US1886592A
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US2119162A
Cited
US2686336A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |