US3280472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for heat treatment of particle materials such as synthetic plastics
Assignee: Individual
•
Filing: 1964-04-16
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Granted: 1966-10-25
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Expires: 1984-04-16
Abstract
No abstract record available.
Inventors
- 👤 Lorenian Zareh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:33
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; B; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; B29; B29B; B29B13/00; B29B13/02; B29B13/021; F28C3/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
THE METHOD OF HEAT TREATING COMMINUTED SYNTHETIC MATERIALS SUCH AS PULVERULENT AND GRANULAR PLASTICS IMMEDIATELY PRIOR TO FURTHER FABRICATION, WHICH COMPRISES ISSUING THE MATERIAL FROM A CONTAINER THROUGH A NOZZLE, SUPPLYING A HEATED AIR CURRENT OF HIGHER TEMPERATURE THAN THE SOFTENING TEMPERATURE OF SAID MATERIAL, DIRECTING THE HOT CURRENT PERIPHERALLY AROUND AND AXIALLY ALONG THE NOZZLE OUTLET IN THE MATERIAL ISSUING DIRECTION TOWARD AND INTO A TUBULAR CHANNEL WHEREBY THE MATERIAL PARTICLES ARE ENTRAINED AND ENVELOPED BY THE AIR CURRENT, SIMULTANEOUSLY COOLING THE NOZZLE PORTION CONTACTED BY THE HOT AIR CURRENT TO PREVENT THE PARTICLES FROM ADHERING TO THE NOZZLE AND CONTINUOUSLY MAINTAINING THE AIR-ENTRAINED MATERIAL TRAVELLING IN THE CHANNEL UNTIL THE MATERIAL HAS REACHED THE DESIRED FABRICATING TEMPERATURE IN STILL AIR-SEGREGATED CONDITION.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |