US4650338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing and kneading machine
Assignee: DIPL ING H LIST INDUSTRIELLE
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Filing: 1984-12-04
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Granted: 1987-03-17
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Expires: 2004-12-04
Abstract
Abstract A mixing and kneading machine comprises a rotating shaft with four circumferentially juxtaposed kneading members, which have an angle of inclination bringing about an axial feed action. Another shaft rotates four times faster. The faster rotating shaft has kneading members with a four times greater slope than the kneading members on the slower shaft. A faster axial product feed in the casing part surrounding the more rapidly rotating shaft is prevented by baffle plates provided in said casing part, so that a narrower residence time distribution for the product is obtained.
Inventors
- 👤 Heinz List
- 👤 Alfred Kunz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:47
CPC Classifications
A; A21; A21C; A21C1/00; A21C1/06; B; B01; B01F; B01F27/00; B01F27/60; B01F27/70; B01F27/701; B01F27/702; B01F35/00; B01F35/90; B01F35/92; B01F35/95; B01F2035/99; B01F35/50; B01F35/53; B01F35/531
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
152 words
A mixing and kneading machine comprising: an elongated casing having a material inlet and a material outlet; a first shaft and a second shaft rotatably mounted in said casing for rotational movement for moving a material from said inlet to said outlet, said first shaft and said second shaft being provided with means for rotating said first shaft at a faster speed than said second shaft; kneading members mounted on said shafts wherein at least the kneading members mounted on said first shaft are spaced juxtaposed in the longitudinal direction of the shaft, said kneading members on at least said first shaft comprise two kneading beams and one kneading arm interconnecting the same; and a baffle plate fixed to the casing proximate to said first shaft, said baffle plate being directed in a plane perpendicular to the first shaft between the kneading members juxtaposed in the longitudinal direction of said first shaft.
Claim 2
Dependent Claim
152 words
A mixing and kneading machine comprising: an elongated casing having a material inlet and a material outlet; a first shaft and a second shaft rotatably mounted in said casing for rotational movement for moving a material from said inlet to said outlet, said first shaft and said second shaft being provided with means for rotating said first shaft at a faster speed than said second shaft; kneading members mounted on said shafts wherein at least the kneading members mounted on said first shaft are spaced juxtaposed in the longitudinal direction of the shaft, said kneading members on at least said first shaft comprise two kneading beams and one kneading arm interconnecting the same; and a baffle plate fixed to the casing proximate to said first shaft, said baffle plate being directed in a plane perpendicular to the first shaft between the kneading members juxtaposed in the longitudinal direction of said first shaft.
Claim 3
Dependent Claim
25 words
A machine according to claim 1 wherein the baffle plate spacedly surrounds the first shaft circumference in an angular range of at least approximately 90°.
Claim 4
Dependent Claim
16 words
A machine according to claim 1 wherein at least part of the baffle plate is arcuate.
Claim 5
Dependent Claim
16 words
A machine according to claim 1 wherein the baffle plate is arranged above the casing base.
Claim 6
Dependent Claim
24 words
A machine according to claim 1 wherein the baffle plate is arranged on the side of the first shaft remote from the second shaft.
Claim 7
Dependent Claim
21 words
A machine according to claim 1 wherein plates are fixed to a casing cover provided on the top of the case.
Claim 8
Dependent Claim
45 words
A machine according to claim 1 wherein the kneading members on the second shaft are juxtaposed in the longitudinal direction of the second shaft and in a plane perpendicular to the second shaft, disks are provided, to whose outer circumference is fixed a kneading arm.
Claim 9
Dependent Claim
26 words
A machine according to claim 7 wherein each kneading member on the second shaft has at least three disks and a kneading arm interconnecting said disks.
Claim 10
Dependent Claim
31 words
A machine according to claim 1 wherein the speed ratio between the two shafts is the same as the ratio between the number of kneading members circumferentially juxtaposed on the shafts.
Claim 11
Dependent Claim
35 words
A machine according to claim 9 wherein the second shaft has four circumferentially juxtaposed kneading members and the first shaft a single kneading member, so that the speed ratio between the two shafts is 1:4.
Claim 12
Dependent Claim
55 words
A machine according to claim 1 wherein the kneading members of the first shaft have a front face and a back face, which uninterruptedly extend outwards with an involute curvature from the shaft circumference so that the kneading arms of the second shaft with a uniform spacing move in a cleaning manner along the faces.
Claim 13
Dependent Claim
27 words
A machine according to claim 1 wherein the casing part surrounding the first shaft is extended to an outlet casing surrounding an extension of the first shaft.
Claim 14
Dependent Claim
29 words
A machine according to claim 12 wherein kneading members of the first shaft surrounded by the outlet casing do not have any slope causing feeding in the outlet direction.
Claim 15
Dependent Claim
19 words
A machine according to claim 13 wherein baffle members are provided between the kneading members in the outlet casing.
References Cited (Backward Citations)
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US3689035A
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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) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |