Patent JPS601874A successfully refreshed from Google Patents.
US3751009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motionless mixing device
Assignee: Individual
•
Filing: 1972-03-02
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Granted: 1973-08-07
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Expires: 1992-03-02
Abstract
Abstract A motionless mixing device in which a hollow, cylindrical tube has fixedly positioned within the tube a plurality of mixing elements in end-to-end contact, wherein each mixing element comprises a flat, generally rectangular plate-like member having a pair of flat, plate-like vanes mounted substantially perpendicular on opposite faces of the plate-like member, the vanes in each pair being angled in opposite directions, the angle between any pair of adjacent plate-like members being about 90*. An apertured disk may be positioned between the mixing elements to improve transverse flow.
Inventors
- 👤 S Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:06
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/40; B01F25/42; B01F25/43; B01F25/431; B01F25/4316; B01F25/43161
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
91 words
In a motionless mixing device, the combination of a hollow cylindrical tube having an inlet and an outlet, and a plurality of mixing elements fixedly positioned within said tube; each of said mixing elements comprising a flat, generally rectangular plate-like member having a pair of flat, plate-like vanes mounted substantially perpendicular on opposite faces of said member, the vanes in each said pair being angled in opposite directions, said mixing elements being aligned substantially end-to-end within said tube such that the angle between any adjacent plate-like members is about 90* .
Claim 2
Dependent Claim
91 words
In a motionless mixing device, the combination of a hollow cylindrical tube having an inlet and an outlet, and a plurality of mixing elements fixedly positioned within said tube; each of said mixing elements comprising a flat, generally rectangular plate-like member having a pair of flat, plate-like vanes mounted substantially perpendicular on opposite faces of said member, the vanes in each said pair being angled in opposite directions, said mixing elements being aligned substantially end-to-end within said tube such that the angle between any adjacent plate-like members is about 90* .
Claim 3
Dependent Claim
41 words
A mixing device as in claim 1 further including a plurality of disks separating some of said plate-like members, said disks being co-axial with the longitudinal axis of said tube and having at least one aperture therethrough for relief of pressure.
Claim 4
Dependent Claim
21 words
A mixing device as in claim 2 wherein every other of said plate-like members is separated by one of said disks.
Claim 5
Dependent Claim
19 words
A mixing device as in claim 2 wherein all adjacent plate-like members are separated by one of said disks.
Claim 6
Dependent Claim
27 words
A mixing device as in claim 2 wherein the diameter of said disks is from about one-fourth to about three-fourths of the internal diameter of said tube.
Claim 7
Dependent Claim
37 words
A mixing device as in claim 1 wherein the length of said plate-like member is greater than its width, and the leading edge of said member is adapted for the slicing of solid material entering said tube.
Claim 8
Dependent Claim
13 words
A mixing device as in claim 6 wherein said leading edge is rounded.
Claim 9
Dependent Claim
15 words
A mixing device as in claim 6 wherein said leading edge is a knife edge.
Claim 10
Dependent Claim
14 words
A mixing device as in claim 6 wherein said leading edge is generally pointeD.
Claim 11
Dependent Claim
55 words
A mixing device as in claim 1 wherein the trailing edges of any pair of said vanes are oriented with respect to the leading edges of an adjacent pair of vanes such that a major portion of the material transferred from said trailing edges initially contacts said adjacent pair of vanes near said leading edges.
Claim 12
Dependent Claim
61 words
A mixing device as in claim 1 wherein the trailing edges of any pair of said vanes are oriented with respect to the leading edges of an adjacent pair of vanes such that a major portion of of material transferred from said trailing edges initially contacts said adjacent pair of vanes near the trailing edges of said adjacent pair of vanes.
Claim 13
Dependent Claim
29 words
A mixing device as in claim 1 wherein said mixing elements are unitarily connected, whereby said plurality of mixing elements may be removed as a unit from said tube.
Claim 14
Dependent Claim
79 words
A mixing device as in claim 1 further including a plurality of disks separating some of said plate-like members, said disks being co-axial with the longitudinal axis of said tube and having at least one aperture therethrough for relief of pressure, wherein said vanes are angled from about 20* to about 40* from the longitudinal centerline of said plate-like members, and wherein the leading edge of said plate-like member is adapted for slicing of solid material entering said tube.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |