US3305894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment device for pliable masses
Assignee: Werner and Pfleiderer GmbH
•
Filing: 1964-11-13
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Granted: 1967-02-28
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Expires: 1984-11-13
Abstract
No abstract record available.
Inventors
- 👤 Boden Helmut
- 👤 Ocker Herbert
- 👤 Pfaff Gerhard
- 👤 Worz Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:01
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/46; B29B7/48; B29B7/484; B01; B01F; B01F27/00; B01F27/60; B01F27/72; B01F27/721; B29B7/488; B29B7/489; B29C; B29C48/00; B29C48/25; B29C48/268; B29C48/36; B29C48/395; B29C48/40; B29C48/50; B29C48/76; B29C48/765; B29C48/766; B29C48/767; B30; B30B; B30B11/00; B30B11/22; B30B11/24; B30B11/243; B30B11/246; B29C48/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A DEVICE FOR CONTINUOUSLY FEEDING AND TREATING A MASS IN A PLIABLE STATE BY SUBJECTING THE MASS SUCCESSIVELY TO DIFFERENT TREATMENT OPERATIONS, SAID DEVICE COMPRISING A ROTARY WORM SHAFT, SAID WORM SHAFT INCLUDING A ROTARY DRIVE SHAFT DIVIDED INTO AT LEAST TWO SHAFT SECTIONS, AND A PLURALITY OF WORM SECTIONS, AT LEAST ONE WORM SECTION BEING FULLY SEATED ON ONE OF SAID SHAFT SECTIONS AXIALLY FREELY SLIDABLE THEREON BUT SECURED AGAINST ROTATION IN REFERENCE THERETO AND SEVERAL WORM SECTIONS BEING SEATED ON THE OTHER SHAFT SECTION AXIALLY SLIDABLE THEREON BUT SECURED AGAINST ROTATION IN REFERENCE THERETO, AND FASTENING MEANS BETWEEN THE ADJACENT ENDS OF THE SHAFT SECTIONS OPERABLE FROM THE OUTSIDE OF SAID DEVICE FOR RELEASABLY SECURING THE TWO SHAFT SECTIONS TO EACH OTHER AND THE WORM SECTIONS THEREON IN FIXED AXIAL POSITIONS IN REFERENCE TO EACH OTHER AND THE SHAFT SECTIONS WHEREBY THE TWO SHAFT SECTIONS AND THE WORM SECTIONS SEATED THEREON ARE SEPARABLY BY SLIDING THE WORM SECTIONS ALONG THE SHAFT SECTIONS UPON RELEASING SAID FASTENING MEANS FOR THE PURPOSE OF REPLACING SAID ONE WORM SECTION SEATED ON SAID ONE SHAFT SECTION.
Claim 2
Independent Claim
184 words
A DEVICE FOR CONTINUOUSLY FEEDING AND TREATING A MASS IN A PLIABLE STATE BY SUBJECTING THE MASS SUCCESSIVELY TO DIFFERENT TREATMENT OPERATIONS, SAID DEVICE COMPRISING A ROTARY WORM SHAFT, SAID WORM SHAFT INCLUDING A ROTARY DRIVE SHAFT DIVIDED INTO AT LEAST TWO SHAFT SECTIONS, AND A PLURALITY OF WORM SECTIONS, AT LEAST ONE WORM SECTION BEING FULLY SEATED ON ONE OF SAID SHAFT SECTIONS AXIALLY FREELY SLIDABLE THEREON BUT SECURED AGAINST ROTATION IN REFERENCE THERETO AND SEVERAL WORM SECTIONS BEING SEATED ON THE OTHER SHAFT SECTION AXIALLY SLIDABLE THEREON BUT SECURED AGAINST ROTATION IN REFERENCE THERETO, AND FASTENING MEANS BETWEEN THE ADJACENT ENDS OF THE SHAFT SECTIONS OPERABLE FROM THE OUTSIDE OF SAID DEVICE FOR RELEASABLY SECURING THE TWO SHAFT SECTIONS TO EACH OTHER AND THE WORM SECTIONS THEREON IN FIXED AXIAL POSITIONS IN REFERENCE TO EACH OTHER AND THE SHAFT SECTIONS WHEREBY THE TWO SHAFT SECTIONS AND THE WORM SECTIONS SEATED THEREON ARE SEPARABLY BY SLIDING THE WORM SECTIONS ALONG THE SHAFT SECTIONS UPON RELEASING SAID FASTENING MEANS FOR THE PURPOSE OF REPLACING SAID ONE WORM SECTION SEATED ON SAID ONE SHAFT SECTION.
References Cited (Backward Citations)
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US2541151A
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US2662243A
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US2607077A
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US2813302A
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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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |