Patent US3873070A successfully refreshed from Google Patents.
US3873070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous mixing machines
Assignee: BEKEN ENGINEERING Ltd
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Filing: 1973-09-10
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Granted: 1975-03-25
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Expires: 1993-09-10
Abstract
Abstract The invention provides an improved continuous mixing machine of the type comprising a mixing chamber having inlet means for material to be mixed therein and outlet means for materials mixed therein and in which chamber is accommodated a pair of axially parallel rotatable shafts. The improvement comprises the employing of shafts which have intermeshing circumferentially extending feed worm sections at their inlet ends and a plurality of intermeshing mixing blades on the outlet side of the feed worm sections. Drive means are provided for rotating these shafts in opposite senses and at different speeds whereby the feed worm sections advance material from the inlet means towards the outlet means but the intermeshing mixing blades mix the materials without substantially advancing them towards the outlet means. The rate of flow of material through the mixing chamber is controlled by feeding means supplying materials to be mixed at a predetermined rate which preferably can be varied as desired.
Inventors
- 👤 Horace Fritz Beken
- 👤 John Michael Beken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:34
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/60; B01F27/72; B01F27/721; B01F27/722; B01F27/7221; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/46; B29B7/48; B29B7/482; B29B7/483; B29B7/488; B29B7/489; B29B7/58; B29B7/60; B29B7/80; B29B7/88; B29B7/94; B29C; B29C48/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
139 words
A continuous mixing machine comprising a mixing chamber having inlet means for materials to be mixed therein and outlet means for materials mixed therein; feeder means for supplying materials to be mixed to said inlet means at a predetermined rate; a pair of axially parallel rotatable shafts accommodated in said mixing chamber between said inlet means and said outlet means; drive means for rotating said shafts in opposite senses and at different speeds; circumferentially extending feed worm sections at the inlet ends of said shafts, which sections intermesh whereby material is advanced from said inlet means towards said outlet means; mixing blade sections on said shafts on the outlet side of the feed worm sections, which mixing blade sections each comprises a plurality of axially spaced mixing blades and which intermesh whereby material is mixed but not substantially advanced.
Claim 2
Dependent Claim
139 words
A continuous mixing machine comprising a mixing chamber having inlet means for materials to be mixed therein and outlet means for materials mixed therein; feeder means for supplying materials to be mixed to said inlet means at a predetermined rate; a pair of axially parallel rotatable shafts accommodated in said mixing chamber between said inlet means and said outlet means; drive means for rotating said shafts in opposite senses and at different speeds; circumferentially extending feed worm sections at the inlet ends of said shafts, which sections intermesh whereby material is advanced from said inlet means towards said outlet means; mixing blade sections on said shafts on the outlet side of the feed worm sections, which mixing blade sections each comprises a plurality of axially spaced mixing blades and which intermesh whereby material is mixed but not substantially advanced.
Claim 3
Dependent Claim
21 words
A mixing machine as claimed in claim 1 wherein the mixer blades extend in pairs substantially radially from a common boss.
Claim 4
Dependent Claim
19 words
A mixing machine as claimed in claim 1 wherein the mixer blades located in successive positiOns along their shaft
Claim 5
Dependent Claim
32 words
A mixing machine as claimed in claim 1 wherein the mixing chamber comprises two intercommunicating part-cylindrical compartments giving the chamber a figure-of-eight cross section, of which each compartment houses a said shaft.
Claim 6
Dependent Claim
39 words
A mixing machine as claimed in claim 1 wherein the mixer blades on the respective shafts are formed and relatively orientated whereby, as the shafts rotate, materials being mixed are pressed together between co-operating blades of the two shafts.
Claim 7
Dependent Claim
46 words
A mixing machine as claim in claim 5 wherein the mixer blades are so orientated on their respective shafts, having regard to the different speeds at which the shafts are driven, that blades on opposite shafts co-operate to perform automatic clearance therefrom of materials being mixed.
Claim 8
Dependent Claim
23 words
A mixing machine as claimed in claim 1 wherein the feeder means comprises means for introducing liquid with other materials to be mixed.
Claim 9
Dependent Claim
26 words
A mixing machine as claimed in claim 1, comprising at the discharge end of the chamber means for controlling rate of discharge of the mixed materials.
Claim 10
Dependent Claim
27 words
A mixing machine as claimed in claim 1 wherein the rate at which the feeder means supplies materials to the inlet means can be varied as desired.
Claim 11
Dependent Claim
17 words
A mixing machine as claimed in claim 1 wherein the shafts are driven at a 2:1 ratio.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |