US4350650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for admixing at least two liquids and feeding them to a shaping mould
Assignee: EURO-LINEA SNC DI COLOMBO & C TRENTO ITALY
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Filing: 1980-12-24
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Granted: 1982-09-21
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Expires: 2000-12-24
Abstract
Abstract A method is disclosed for intimately blending two liquid phases, such as is required, for example, in the plastics materials industry, the method including causing the two liquids to flow under throttled conditions through a nozzle after having been pressurized. The admixture is intimate and is obtained quickly, premature cross-linking and incrustation formation being thus effectively prevented.
Inventors
- 👤 Giuseppe Cereghini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:23
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/40; B01F25/45; B01F25/451; B01F25/4512; B01F35/00; B01F35/80; B01F35/88; B01F35/882; B01F35/8822
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
220 words
A method for admixing at least two liquids and feeding them into a mould via first and second branched, converging throttling passageways formed in a nozzle block leading to a discharge passage and defining a first and second chamber which comprises the steps of: feeding a first liquid through a first inlet passage into said first chamber; circulating the first liquid under pressure between the first and second chambers through the throttling passageways to clean the chambers and passageways; converging the first liquid through the first and second branched, converging passageways in the nozzle block for impressing on the liquid a laminar flow motion; thereafter feeding a second liquid through a second inlet passage into said second chamber separated from the first chamber by said nozzle block; circulating the first and second liquids back and forth under laminar flow from one to ten times in a closed loop between the first and second chambers; converging the first and second liquids through the first and second branched, converging passageways in the nozzle block to thoroughly admix the first and second liquids and to generate a desirable sliding velocity gradient; and feeding the admixed liquids through said discharge passage in the nozzle block directly into said mould, thus preventing incrustations of the liquids in the first and second chambers and nozzle block.
Claim 2
Independent Claim
220 words
A method for admixing at least two liquids and feeding them into a mould via first and second branched, converging throttling passageways formed in a nozzle block leading to a discharge passage and defining a first and second chamber which comprises the steps of: feeding a first liquid through a first inlet passage into said first chamber; circulating the first liquid under pressure between the first and second chambers through the throttling passageways to clean the chambers and passageways; converging the first liquid through the first and second branched, converging passageways in the nozzle block for impressing on the liquid a laminar flow motion; thereafter feeding a second liquid through a second inlet passage into said second chamber separated from the first chamber by said nozzle block; circulating the first and second liquids back and forth under laminar flow from one to ten times in a closed loop between the first and second chambers; converging the first and second liquids through the first and second branched, converging passageways in the nozzle block to thoroughly admix the first and second liquids and to generate a desirable sliding velocity gradient; and feeding the admixed liquids through said discharge passage in the nozzle block directly into said mould, thus preventing incrustations of the liquids in the first and second chambers and nozzle block.
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) | 1985-09-20 | 1986-03-22 | 1986-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-20 | 1990-03-22 | 1990-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-20 | 1994-03-22 | 1994-09-21 | $7700.00 | Window Closed / Lapsed |