Patent US3880407A successfully refreshed from Google Patents.
US3880407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixer and kneader with counteractive blades
Assignee: Individual
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Filing: 1973-10-17
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Granted: 1975-04-29
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Expires: 1993-10-17
Abstract
Abstract In a mixer and kneader, an axially extending agitator rotates within a stationary cylindrically-shaped housing. In a number of axially spaced radially extending planes within the housing, plate-like elements are fixed to the agitator and are closely spaced inwardly from the inner surface of the housing. Each plane has a number of circumferentially spaced plate-like elements and each element has an axially extending stirrer blade attached to its radially outer edge. Between each adjacent pair of planes of the plate-like elements, a counter element is provided consisting of a support mounting attached to the inner wall of the housing and an axially extending counter blade secured to the radially inner surface of the support mounting. The stirrer blades are arranged to pass between the cylindrical housing and the counter blades affording a kneading action. Further, the stirrer blades afford a scraping action on the inner surface of the cylindrical housing while the counter blades afford a similar scraping action on the plate-like elements and the surface of the agitator. The counter blades can be formed in a frame-like configuration to provide additional kneading action.
Inventors
- 👤 Heinz List
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:01
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/60; B01F27/70; B01F27/707; B01F35/00; B01F35/90; B01F35/92; B01F35/95
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
407 words
A mixing and kneading device for the mechanical, chemical and thermal treatment of liquid, pasty and pulverant products with or without the input or output of gases and vapor, comprising a cylindrical housing, an inlet in said housing for introducing materials to be processed into said housing, an outlet in said housing spaced from said inlet for withdrawing the materials from said housIng, an agitator positioned within and having its axis extending in the axial direction of said housing, said agitator mounted for rotation about its axis, a plurality of plate-like elements secured to and extending radially outwardly from said agitator for rotation therewith, said plate-like elements disposed in a number of planes extending transversely of the axis of said agitator, a stirrer blade extending in the axial direction of said agitator and fixed to each said plate-like element on the radially outer periphery thereof, the radially outer periphery of said plate-like elements being spaced closely inwardly from the inner surface of said cylindrical housing so that as said agitator rotates at least said stirrer blade passes in closely spaced relation to the inner surface of said cylinder housing and effects a cleaning thereof, a plurality of stationary counter-elements secured to the inner surface of said cylindrical housing and extending radially inwardly towards said agitator, each said counter-element comprising a mounting support secured to the inner surface of said cylindrical housing and extending radially toward said agitator for a dimension at least slightly greater than the dimension between the inner surface of said cylindrical housing and the radially-inwardly facing surface of said axially extending stirrer blades, said mounting support being positioned in the axial direction of said cylindrical housing so that it is positioned between the adjacent ends of said stirrer blades located in adjacent planes of said blades, a counter-blade secured to the radially inner end of said support mounting and extending inwardly therefrom toward said agitator so that the radially inner edge of said counter-blades is spaced closely from and acts as a scraper for said agitator, said counter-blades extending in the axial direction of said cylindrical housing from said support mounting into the axially extending portion of said cylindrical housing in which said stirrer blades rotate so that said stirrer blades pass between the inner surface of said cylindrical housing and the radially outwardly facing edge of said counter-blades and spaced axially from said support mountings for said counter-blades for providing a kneading effect.
Claim 2
Dependent Claim
407 words
A mixing and kneading device for the mechanical, chemical and thermal treatment of liquid, pasty and pulverant products with or without the input or output of gases and vapor, comprising a cylindrical housing, an inlet in said housing for introducing materials to be processed into said housing, an outlet in said housing spaced from said inlet for withdrawing the materials from said housIng, an agitator positioned within and having its axis extending in the axial direction of said housing, said agitator mounted for rotation about its axis, a plurality of plate-like elements secured to and extending radially outwardly from said agitator for rotation therewith, said plate-like elements disposed in a number of planes extending transversely of the axis of said agitator, a stirrer blade extending in the axial direction of said agitator and fixed to each said plate-like element on the radially outer periphery thereof, the radially outer periphery of said plate-like elements being spaced closely inwardly from the inner surface of said cylindrical housing so that as said agitator rotates at least said stirrer blade passes in closely spaced relation to the inner surface of said cylinder housing and effects a cleaning thereof, a plurality of stationary counter-elements secured to the inner surface of said cylindrical housing and extending radially inwardly towards said agitator, each said counter-element comprising a mounting support secured to the inner surface of said cylindrical housing and extending radially toward said agitator for a dimension at least slightly greater than the dimension between the inner surface of said cylindrical housing and the radially-inwardly facing surface of said axially extending stirrer blades, said mounting support being positioned in the axial direction of said cylindrical housing so that it is positioned between the adjacent ends of said stirrer blades located in adjacent planes of said blades, a counter-blade secured to the radially inner end of said support mounting and extending inwardly therefrom toward said agitator so that the radially inner edge of said counter-blades is spaced closely from and acts as a scraper for said agitator, said counter-blades extending in the axial direction of said cylindrical housing from said support mounting into the axially extending portion of said cylindrical housing in which said stirrer blades rotate so that said stirrer blades pass between the inner surface of said cylindrical housing and the radially outwardly facing edge of said counter-blades and spaced axially from said support mountings for said counter-blades for providing a kneading effect.
Claim 3
Dependent Claim
40 words
A mixing and kneading device, as set forth in claim 1, wherein each said stirrer blade is fixed to one said plate-like element with its radially outer edge being approximately coincident with the radially outer edge of said plate-like element.
Claim 4
Dependent Claim
53 words
A mixing and kneading device, as set forth in claim 1, wherein each said stirrer blade is fixed to and extends radially outwardly from the radially outer edge of said plate-like element so that there is a radially extending open space between the radially outer side of said plate-like element and stirrer blade.
Claim 5
Dependent Claim
27 words
A mixing and kneading device, as set forth in claim 1, wherein said stirrer blades extend in parallel relation with the axial direction of said cylindrical housing.
Claim 6
Dependent Claim
26 words
A mixing and kneading device, as set forth in claim 1, wherein said stirrer blades are arranged angularly to the axial direction of said cylindrical housing.
Claim 7
Dependent Claim
56 words
A mixing and kneading device, as set forth in claim 1, wherein a number of radially extending planes of said plate-like elements are arranged along said agitator with a plurality of said plate-like elements in each of the radially extending planes and one said counter element located between each pair of adjacent said radially extending planes.
Claim 8
Dependent Claim
33 words
A mixing and kneading device, as set forth in claim 6, wherein at least two circumferentially spaced counter-elements are located between each pair of adjacent said radially extending planes of said plate-like elements.
Claim 9
Dependent Claim
56 words
A mixing and kneading device, as set forth in claim 7, wherein each said counter-element has its said counter blade extending in the axial direction from only one side of said mounting support and on adjacent said counter-elements between the same pair of radially extending planes of said plate-like elements said counter-blades extend in opposite directions.
Claim 10
Dependent Claim
66 words
A mixing and kneading device, as set forth in claim 6, wherein said counter-blade extends laterally from said support mounting in the axial direction of said cylindrical housing for a dimension so that it is closely spaced from at least one said plate-like element in the adjacent planes of said plate-like elements for affording a scraping or cleaning action on the surface of said plate-like element.
Claim 11
Dependent Claim
26 words
A mixing and kneading device, as set forth in claim 9, wherein said counter-blades extend in parallel relation with the axial direction of said cylindrical housing.
Claim 12
Dependent Claim
26 words
A mixing and kneading device, as set forth in claim 9, wherein said counter-blades have a curved configuration viewed in the plane of said plate-like elements.
Claim 13
Dependent Claim
23 words
A mixing and kneading device, as set forth in claim 9, wherein said counter-blades have a frame-like shape forming a kneading opening therethrough.
Claim 14
Dependent Claim
123 words
A mixing and kneading device, as set forth in claim 12, wherein the frame-like shape of said counter-blades is formed by an axially extending kneader arm secured to and extending in the axial direction from both sides of said mounting support, a pair of axially spaced arms each extending radially outwardly from an opposite end of said kneader arm toward said agitator and a scraper extending between the radially inner ends of said arms and having its radially inner surface spaced closely from the surface of said agitator, the radially outer side of said scraper being spaced radially from the radially inner side of said kneader so that said kneader arm, said arms and said scraper define the kneading opening through said counter-blades.
Claim 15
Dependent Claim
26 words
A mixing and kneading device, as set forth in claim 1, wherein said counter-blades extend at an angle to the axial direction of said cylindrical housing.
Claim 16
Dependent Claim
40 words
A mixing and kneading device, as set forth in claim 1, wherein said cylindrical housing having displaceable panels and said counter-elements attached to said displaceable panels so that said panels can be removed for cleaning the interior of the device.
Claim 17
Dependent Claim
50 words
A mixing and kneading device, as set forth in claim 1, wherein one of said agitator and said housing is subjected to a vibratory action having an amplitude of one-half to three-quarters of the clearance between the moving parts of said rotatable agitator and the stationary parts of said housing.
Claim 18
Dependent Claim
59 words
A mixing and kneading device, as set forth in claim 1, wherein said plate-like elements are arranged in a number of axially spaced radially extending planes having said plate-like elements spaced apart in the circumferential direction of said agitator within each of said radially extending planes so that open spaces are provided between adjacent edges of said plate-like elements.
Claim 19
Dependent Claim
80 words
A mixing and kneading device, as set forth in claim 1, wherein said cylindrical housing having a closed end wall at each end thereof and at least one said plate-like element located in a plane closely adjacent to each said end wall and having one said stirrer blade fixed to said plate-like element in the plane adjacent the end wall and extending axially therefrom only from the side of said plate-like element facing away from the adjacent said end wall.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |