US3788609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing apparatus and method
Assignee: Individual
•
Filing: 1972-06-27
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Granted: 1974-01-29
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Expires: 1992-06-27
Abstract
Abstract A mixing apparatus comprising a stator housing having a cylindrical inner wall defining a mixing chamber having an inlet and an outlet leading thereto. A rotor is supported for rotatable and reciprocal motion within the mixing chamber and defines a cylindrical rotor wall spaced from the stator inner wall. Drive means and coupling means are provided for transmitting rotatable and axial reciprocating motion to the rotor. The stator inner wall is provided with rows of spaced apart projections thereon protruding into the mixing chamber. The rotor is also provided with rows of spaced apart rotor blades which are arranged in a predetermined manner to pass between the stator projections on the inner wall of the stator. The coupling means is arranged to provide a cycloidal motion to the rotor whereby each rotor blade will pass between adjacent stator projections and wipe against them on the upward motion and pass between rows of projections on the downward motion.
Inventors
- 👤 S Toczyski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:21
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/402; B01; B01F; B01F31/00; B01F31/40; B01F31/401; B29B7/74; B29B7/7466
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
236 words
A mixing apparatus comprising a stator housing having a cylindrical inner wall defining a mixing chamber, said mixing chamber having an inlet and an outlet, a rotor supported for rotatable and reciprocal motion within said mixing chamber and having a cylindrical rotor wall spaced from said stator inner wall, drive means, coupling means connected between said drive means and rotor for transmitting a rotatable and axial reciprocating motion to said rotor, said stator inner wall having rows of spaced apart projections thereon protruding into said mixing chamber, said rotor having rows of spaced apart rotor blades arranged to pass between said stator projections, said coupling means being arranged to provide a cycloidal motion to said rotor whereby each rotor blade will pass between adjacent stator projections and wipe against them on the upward motion and pass between rows of projections on the downward motion, said coupling means comprising a first and second annular toothed gear, said first and second gears being positioned in opposed spaced apart relationship on a common central axis and having identical radius and number of teeth, opposed circular secondary gears in toothed engagement between said first and second annular gears, a rotor shaft supported on said central axis and connected to said secondary gears, said first annular gear being rotatably driven by said drive means to impart rotary motion to said rotor shaft and upward and downward motion through said secondary gears.
Claim 2
Dependent Claim
236 words
A mixing apparatus comprising a stator housing having a cylindrical inner wall defining a mixing chamber, said mixing chamber having an inlet and an outlet, a rotor supported for rotatable and reciprocal motion within said mixing chamber and having a cylindrical rotor wall spaced from said stator inner wall, drive means, coupling means connected between said drive means and rotor for transmitting a rotatable and axial reciprocating motion to said rotor, said stator inner wall having rows of spaced apart projections thereon protruding into said mixing chamber, said rotor having rows of spaced apart rotor blades arranged to pass between said stator projections, said coupling means being arranged to provide a cycloidal motion to said rotor whereby each rotor blade will pass between adjacent stator projections and wipe against them on the upward motion and pass between rows of projections on the downward motion, said coupling means comprising a first and second annular toothed gear, said first and second gears being positioned in opposed spaced apart relationship on a common central axis and having identical radius and number of teeth, opposed circular secondary gears in toothed engagement between said first and second annular gears, a rotor shaft supported on said central axis and connected to said secondary gears, said first annular gear being rotatably driven by said drive means to impart rotary motion to said rotor shaft and upward and downward motion through said secondary gears.
Claim 3
Dependent Claim
28 words
A mixing apparatus as claimed in claim 1 wherein said stator projections are stator blades adapted to pass in close proximity to the surfaces of said rotor blade.
Claim 4
Dependent Claim
69 words
A mixing apparatus as claimed in claim 2 wherein a material is introduced to said mixing chamber in said inlet and removed through said outlet, said material being kneaded between said rotor and stator blades and pushed towards said outlet during said downward motion, said upward motion of said rotor imparting a shearing and wiping action to said material as each said rotor blades moves between adjacent stator blades.
Claim 5
Dependent Claim
46 words
A mixing apparatus as claimed in claim 1 wherein said second annular gear is fixed and said secondary gears impart said rotary and upward and downward motion to said rotor shaft as said secondary gears rotate about the circumference of said first and second annular gears.
Claim 6
Dependent Claim
56 words
A mixing apparatus as claimed in claim 1 wherein said second annular gear is driven by said drive means at the same peripherAl speed and in opposite direction to said first annular gear causing said secondary gears to rotate about its central transverse axis and to thereby impart upward and downward motion to said rotor shaft.
Claim 7
Dependent Claim
55 words
A mixing apparatus as claimed in claim 1 wherein said first and second annular gears are driven at the same peripheral speed and in the same direction by said drive means, said secondary gears being locked within said first and second annular gears whereby said secondary gears impart a rotary motion to said rotor shaft.
Claim 8
Dependent Claim
42 words
A mixing apparatus as claimed in claim 1 wherein said first and second annular gears are rotated at varying peripheral speed in one direction and at varying speed in the opposite direction, said directions being reversed when said drive means is stopped.
Claim 9
Dependent Claim
79 words
A mixing apparatus as claimed in claim 1 wherein said secondary gears are each supported by a central transverse shaft supported in a cage disposed in a horizontal plane, a further shaft secured to said secondary gear offset from said central shaft and attached to a collar mounted on said rotor shaft, said secondary gears when rotating causing said further shaft to rotate about said central shaft to thereby impart said upward and downward motion to said rotor shaft.
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |