US2809172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously producing latex foam
Assignee: Uniroyal Inc
•
Filing: 1952-08-13
•
Granted: 1957-10-08
•
Expires: 1972-08-13
Abstract
No abstract record available.
Inventors
- 👤 Alexis W Keen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:16
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/27; B01F27/271; B01F27/2711; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/405; B29B7/407; B29B7/74; B29B7/7404; B29B7/7409; B29B7/7414; B29B7/7461; B29B7/7476; B29B7/7495; B29C; B29C67/00; B29C67/24; B29C67/246; B01F25/00; B01F2025/91; B01F2025/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A METHOD OF CONTINUOUSLY PRODUCING LATEX FOAM IN A CONTINUOUS STREAM FOR THE PRODUCTION OF A MOLDED ARTICLE COMPRISING THE STEPS OF PASSING IN A CLOSED RECEPTACLE A METERED STREAM OF AIR AT A CONTROLLED UNIFORM RATE AND UNDER SUFFICIENT PRESSURE THROUGH A FROTHING SOAP SOLUTION TO PRODUCE A FROTH STREAM UNDER PRESSURE, FEEDING SAID FROTH STREAM WHILE UNDER AND DRIVEN BY SAID PRESSURE THROUGH A SHEARING REGION WHEREBY THE RESULTANT FROTH CONSISTS ESSENTIALLY OF UNIFORM SIZED BUBBLES, DRIVING SAID SHEARED FROTH BY SAID PRESSURE THROUGH A RESTRICTED DISCHARGE PASSAGEWAY, SAID PASSAGEWAY BEING SUCH THAT SAID FROTH STREAM IS OF A HOLLOW COLUMNAR SHAPE, CENTRIFUGALLY PROJECTING A METERED STREAM OF LATEX WITHIN THE HOLLOW COLUMN AT A CONTROLLED UNIFORM RATE, AND THOROUGHLY COMMINGLING SAID STREAMS TO UNIFORMLY AND HOMOGENEOUSLY INTERMIX THE SAID LATEX AND FROTH AS THE STREAM PASSES TO THE POINT OF DELIVERY.
Claim 2
Independent Claim
144 words
A METHOD OF CONTINUOUSLY PRODUCING LATEX FOAM IN A CONTINUOUS STREAM FOR THE PRODUCTION OF A MOLDED ARTICLE COMPRISING THE STEPS OF PASSING IN A CLOSED RECEPTACLE A METERED STREAM OF AIR AT A CONTROLLED UNIFORM RATE AND UNDER SUFFICIENT PRESSURE THROUGH A FROTHING SOAP SOLUTION TO PRODUCE A FROTH STREAM UNDER PRESSURE, FEEDING SAID FROTH STREAM WHILE UNDER AND DRIVEN BY SAID PRESSURE THROUGH A SHEARING REGION WHEREBY THE RESULTANT FROTH CONSISTS ESSENTIALLY OF UNIFORM SIZED BUBBLES, DRIVING SAID SHEARED FROTH BY SAID PRESSURE THROUGH A RESTRICTED DISCHARGE PASSAGEWAY, SAID PASSAGEWAY BEING SUCH THAT SAID FROTH STREAM IS OF A HOLLOW COLUMNAR SHAPE, CENTRIFUGALLY PROJECTING A METERED STREAM OF LATEX WITHIN THE HOLLOW COLUMN AT A CONTROLLED UNIFORM RATE, AND THOROUGHLY COMMINGLING SAID STREAMS TO UNIFORMLY AND HOMOGENEOUSLY INTERMIX THE SAID LATEX AND FROTH AS THE STREAM PASSES TO THE POINT OF DELIVERY.
References Cited (Backward Citations)
US1582992A
Cited
US1818372A
Cited
US2290729A
Cited
US2156508A
Cited
US2261439A
Cited
US2295740A
Cited
US2335339A
Cited
US2361982A
Cited
US2576318A
Cited
US2581918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |