US3635444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static mixer
Assignee: AMVIT
•
Filing: 1970-09-08
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Granted: 1972-01-18
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Expires: 1990-09-08
Abstract
Abstract The static mixer has a static rigid mixing unit contained in a coaxial barrel which is mounted at its ends, respectively, in an inlet header through which materials to be mixed are fed under pressure to and through the unit, by which they are mixed, and in an outlet header through which the mixture is discharged. The unit comprises a row of vanes arranged to divide the material into separate streams, reassemble them in different combinations, and redivide and combine the combinations, repeatedly, as the material passes through the unit. The characteristic feature is that the barrel and unit are composed of different materials so related that the barrel can be destroyed readily, or rendered readily destructible, by means which, when and as applied to the combined barrel and unit so that both are subjected thereto, leaves the unit substantially intact.
Inventors
- 👤 Charles Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:40
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/40; B01F25/42; B01F25/43; B01F25/431; B01F25/4314; B01F25/43141
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
184 words
A continuous static type continuous mixer for flowable ingredients of a quick-setting plastic fed continuously under pressure and for mixing the ingredients and discharging the resultant plastic in flowable moldable condition, comprising: a tubular barrel; a header on one end of the barrel adapted for connection to a source for receiving the ingredients under pressure and admitting the received ingredients into the barrel; discharge means at the other end of the barrel; a static rigid mixing unit within the barrel and comprising a row of mixing vanes extending endwise of the barrel and arranged so that the stream of material is caused to flow through tortuous paths and to be subdivided and the subdivided streams mixed repeatedly as the material passes through the barrel to the discharge means; said barrel being composed of a material different from that of the vanes, said material being such, relative to the material of the vanes, that said material can be destroyed or rendered readily destructible by means which, when and as applied so that the combined barrel and unit are subjected thereto, leave the vanes substantially intact.
Claim 2
Dependent Claim
184 words
A continuous static type continuous mixer for flowable ingredients of a quick-setting plastic fed continuously under pressure and for mixing the ingredients and discharging the resultant plastic in flowable moldable condition, comprising: a tubular barrel; a header on one end of the barrel adapted for connection to a source for receiving the ingredients under pressure and admitting the received ingredients into the barrel; discharge means at the other end of the barrel; a static rigid mixing unit within the barrel and comprising a row of mixing vanes extending endwise of the barrel and arranged so that the stream of material is caused to flow through tortuous paths and to be subdivided and the subdivided streams mixed repeatedly as the material passes through the barrel to the discharge means; said barrel being composed of a material different from that of the vanes, said material being such, relative to the material of the vanes, that said material can be destroyed or rendered readily destructible by means which, when and as applied so that the combined barrel and unit are subjected thereto, leave the vanes substantially intact.
Claim 3
Dependent Claim
42 words
The structure according to claim 1 wherein the barrel is composed of material which is rendered readily destructible by the application of heat to the combined barrel and unit at predetermined low temperatures below temperatures which have deleterious effects on the unit.
Claim 4
Dependent Claim
26 words
The structure according to claim 1 wherein the barrel is composed of material which is soluble readily in a solvent in which the unit is insoluble.
Claim 5
Dependent Claim
37 words
The structure according to claim 1 wherein the barrel is composed of material which can be broken into fragments readily by mechanical forces which, as applied to the combined barrel and unit, leave the vanes substantially intact.
Claim 6
Dependent Claim
13 words
The structure according to claim 1 wherein the barrel is set plastic material.
Claim 7
Dependent Claim
12 words
The structure according to claim 5 wherein the barrel is ceramic material.
Claim 8
Dependent Claim
13 words
The structure according to claim 5 wherein the unit is of hard metal.
Claim 9
Dependent Claim
23 words
The structure according to claim 1 wherein the barrel is composed of synthetic organic plastic and filler and the vanes are ferrous metal.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |