US3253818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing and shearing apparatus
Assignee: Celanese Corp
•
Filing: 1963-06-17
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Granted: 1966-05-31
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Robert M Seddon
- 👤 Walter H Russell
- 👤 Kenneth B Rollins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:13
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/42; B29B7/422; B29B7/423; B01; B01J; B01J19/00; B01J19/18; B01J19/20; B29C; B29C48/00; B29C48/25; B29C48/252; B29C48/285; B29C48/29; B29C48/36; B29C48/395; B29C48/50; B29C48/68; B29C48/685; B29C48/687; B29C48/03; B29C48/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
APPARATUS FOR CONTINUOUSLY IMPARTING A VIGOROUS MIXING AND SHEARING ACTION FOR A MATERIAL, SAID APPARATUS COMPRISING A CYLINDRICAL BARREL HAVING INTERNL SURFACES, A SCREW MEMBER COAXIAL WITH SAID BARREL, POSITIONED WITHIN SAID BARREL AND HAVING A PLURALITY OF INTERRUPTED THREADS, SAID INTERRUPTED THREADS COMPRISING A PLURALITY OF PROJECTIONS, SAID BARREL HAVING A PLURALITY OF TEETH PROFECTING INWARDLY FROM SAID INTERNAL SURFACES, SAID SCREW MEMBER AND SAID BARREL BEING RELATIVELY MOVABLE IN BOTH A ROTATABLE AND AN AXIALLY RECIPROCAL MANNER SO THAT SAID TEETH ARE OPERABLE TO PASS BETWEEN SAID PROJECTIONS THROUGH THE INTERRUPTIONS IN SAID THREADS, AT LEAST ONE OF SAID TEETH HAVING AN OPENING IN ITS SURFACE AND HAVING A TEMPERATURE SENSING DEVICE POSITIONED THEREIN SO THAT SAID TEMPERATURE SENSING DEVICE IS DIRECTLY EXPOSED TO THE MATERIAL BEING TREATED IN SAID APPARATUS THROUGH SAID OPENING.
Claim 2
Dependent Claim
136 words
APPARATUS FOR CONTINUOUSLY IMPARTING A VIGOROUS MIXING AND SHEARING ACTION FOR A MATERIAL, SAID APPARATUS COMPRISING A CYLINDRICAL BARREL HAVING INTERNL SURFACES, A SCREW MEMBER COAXIAL WITH SAID BARREL, POSITIONED WITHIN SAID BARREL AND HAVING A PLURALITY OF INTERRUPTED THREADS, SAID INTERRUPTED THREADS COMPRISING A PLURALITY OF PROJECTIONS, SAID BARREL HAVING A PLURALITY OF TEETH PROFECTING INWARDLY FROM SAID INTERNAL SURFACES, SAID SCREW MEMBER AND SAID BARREL BEING RELATIVELY MOVABLE IN BOTH A ROTATABLE AND AN AXIALLY RECIPROCAL MANNER SO THAT SAID TEETH ARE OPERABLE TO PASS BETWEEN SAID PROJECTIONS THROUGH THE INTERRUPTIONS IN SAID THREADS, AT LEAST ONE OF SAID TEETH HAVING AN OPENING IN ITS SURFACE AND HAVING A TEMPERATURE SENSING DEVICE POSITIONED THEREIN SO THAT SAID TEMPERATURE SENSING DEVICE IS DIRECTLY EXPOSED TO THE MATERIAL BEING TREATED IN SAID APPARATUS THROUGH SAID OPENING.
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |