Patent US3154808A successfully refreshed from Google Patents.
US3154808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous internal stiff-gel mixer
Assignee: Farrel Corp
•
Filing: 1962-05-15
•
Granted: 1964-11-03
•
Expires: 1982-05-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Edwin H Ahlefeld
- 👤 Arnold J Baldwin
- 👤 Hold Peter
- 👤 Walter A Rapetski
- 👤 Hans R Scharer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:47
CPC Classifications
C; C11; C11D; C11D13/00; C11D13/10; A; A21; A21C; A21C1/00; A21C1/06; A21C1/065; B; B01; B01F; B01F27/00; B01F27/60; B01F27/72; B01F27/721; B01F35/00; B01F35/10; B29; B29B; B29B7/00; B29B7/02; B29B7/06; B29B7/10; B29B7/18; B29B7/183; B29B7/22; B29B7/28; B29B7/283; B29B7/286; B29B7/30; B29B7/34; B29B7/38; B29B7/46; B29B7/465; B29B7/48; B29B7/488; B29B7/58; B29B7/582; B29B7/60; B29B7/603; B29B7/72; B29B7/726; B29B7/728; B29B7/74; B29B7/7476; B29B7/7495; B29B7/80; B29B7/82; B29B7/823; B29B7/826; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/40; B29C48/41; B29C48/78; B29C48/80; B29C48/83; B29C48/834; B29C48/84; B29C48/845; B29C48/85; B29C48/03; B29C48/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A CONTINUOUS INTERNAL MIXER COMPRISING A BARREL FORMING TWO LATERALLY INTERCONNECTING SUBSTANTIALLY CYLINDRICAL AND MUTUALLY PARALLEL CHAMBERS HAVING AT ONE END A COMMON DISCHARGE ORIFICE, BLADED ROTORS LOCATED IN SAID CHAMBERS, MEANS FOR RECEIVING THE MATERIAL TO BE MIXED AND STUFFING IT UNDER PRESSURE INTO SAID CHAMBERS AT A LOCATION SPACED FROM SAID DISCHARGE ORIFICE, MEANS FOR ROTATING SAID ROTORS, EACH OF SAID ROTORS HAVING A BLADE WITH A CROSS SECTION THAT IS SUBSTANTIALLY LIKE THAT OF A BANBURY-TYPE BLADE AND HAVING A PORTION THAT TWISTS AWAY FROM ITS DIRECTION OF ROTATION AND A PORTION THAT TWISTS IN THE OPPOSITE DIRECTION, THE LENGTH AND TWIST RATIO BETWEEN SAID OPPOSITELY TWISTING PORTIONS OF SAID BLADE BEING SUCH THAT WHEN SAID CHAMBERS CONTAIN SAID MATERIAL THE AVERAGE OF THE AXIALLY DIRECTED FORCES APPLIED TO THE LATTER BY SAID BLADES IS INSUFFICIENT TO FORCE THE MATERIAL THROUGH SAID ORIFICE, WHEREBY THE OVERALL AXIAL TRAVEL OF SAID MATERIAL THROUGH SAID CHAMBERS IS DEPENDENT ON THE RATE AT WHICH IT IS RECEIVED BY THE FIRST NAMED MEANS.
Claim 2
Dependent Claim
172 words
A CONTINUOUS INTERNAL MIXER COMPRISING A BARREL FORMING TWO LATERALLY INTERCONNECTING SUBSTANTIALLY CYLINDRICAL AND MUTUALLY PARALLEL CHAMBERS HAVING AT ONE END A COMMON DISCHARGE ORIFICE, BLADED ROTORS LOCATED IN SAID CHAMBERS, MEANS FOR RECEIVING THE MATERIAL TO BE MIXED AND STUFFING IT UNDER PRESSURE INTO SAID CHAMBERS AT A LOCATION SPACED FROM SAID DISCHARGE ORIFICE, MEANS FOR ROTATING SAID ROTORS, EACH OF SAID ROTORS HAVING A BLADE WITH A CROSS SECTION THAT IS SUBSTANTIALLY LIKE THAT OF A BANBURY-TYPE BLADE AND HAVING A PORTION THAT TWISTS AWAY FROM ITS DIRECTION OF ROTATION AND A PORTION THAT TWISTS IN THE OPPOSITE DIRECTION, THE LENGTH AND TWIST RATIO BETWEEN SAID OPPOSITELY TWISTING PORTIONS OF SAID BLADE BEING SUCH THAT WHEN SAID CHAMBERS CONTAIN SAID MATERIAL THE AVERAGE OF THE AXIALLY DIRECTED FORCES APPLIED TO THE LATTER BY SAID BLADES IS INSUFFICIENT TO FORCE THE MATERIAL THROUGH SAID ORIFICE, WHEREBY THE OVERALL AXIAL TRAVEL OF SAID MATERIAL THROUGH SAID CHAMBERS IS DEPENDENT ON THE RATE AT WHICH IT IS RECEIVED BY THE FIRST NAMED MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |