Patent DE2931466C2 successfully refreshed from Google Patents.
US3229965A
Expired / Lapsed
US
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Mixing device
Assignee: Individual
•
Filing: 1964-12-28
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Granted: 1966-01-18
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Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Edward F Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:38
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/86; B01F33/862
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A MIXING DEVICE COMPRISING A TUBULAR HOUSING DIVIDED TRANSVERSELY INTO AN UPPER AND LOWER PORTION, SAID UPPER PORTION BEING DIVIDED INTO A PLURALITY OF SECTORSHAPED PASSAGEWAYS BY A PLURALITY OF RADIAL PARTITIONS, AND A MULTI-BLADED ROTOR DISPOSED WITHIN THE LOWER PORTION OF SAID HOUSING, SAID ROTOR HAVING AN UPPER EDGE CLOSELY SPACED AND PARALLEL TO THE OPPOSING EDGES OF THE RADIAL PARTITIONS, THE INTERNAL WALL OF SAID LOWER PORTION HAVING A PLURALITY OF PROJECTING HELICAL RIBS WHICH COOPERATE WITH THE BLADES OF SAID ROTOR TO PRODUCE SHEARING ACTION OF A FLUID WHICH IS DRAWN INTO THE CHAMBER WHEN SAID ROTOR IS ROTATED, SAID LOWER PORTION BEING OTHERWISE UNOBSTRUCTED.
Claim 2
Dependent Claim
108 words
A MIXING DEVICE COMPRISING A TUBULAR HOUSING DIVIDED TRANSVERSELY INTO AN UPPER AND LOWER PORTION, SAID UPPER PORTION BEING DIVIDED INTO A PLURALITY OF SECTORSHAPED PASSAGEWAYS BY A PLURALITY OF RADIAL PARTITIONS, AND A MULTI-BLADED ROTOR DISPOSED WITHIN THE LOWER PORTION OF SAID HOUSING, SAID ROTOR HAVING AN UPPER EDGE CLOSELY SPACED AND PARALLEL TO THE OPPOSING EDGES OF THE RADIAL PARTITIONS, THE INTERNAL WALL OF SAID LOWER PORTION HAVING A PLURALITY OF PROJECTING HELICAL RIBS WHICH COOPERATE WITH THE BLADES OF SAID ROTOR TO PRODUCE SHEARING ACTION OF A FLUID WHICH IS DRAWN INTO THE CHAMBER WHEN SAID ROTOR IS ROTATED, SAID LOWER PORTION BEING OTHERWISE UNOBSTRUCTED.
References Cited (Backward Citations)
GB777271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |