Patent US3556664A successfully refreshed from Google Patents.
Patent US3715076A successfully refreshed from Google Patents.
US3715076A
Expired / Lapsed
US
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Method and apparatus for spraying powdered thermoplastic substances
Assignee: HAJTOMU ES FELVONOGYAR
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Filing: 1971-04-23
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Granted: 1973-02-06
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Expires: 1991-04-23
Abstract
Abstract POWDERED THEMOPLASTIC SUBSTANCES ARE SPRAYED IN HEATED FORM AGAINST A SUBSTRATE, BY ENTRAINING THE POWDER COLD IN A GAS STREAM, AND EJECTING THE GAS STREAM FROM A NOZZLE IN THE FORM OF A FLAT CLOUD. THE CLOUD IS CONFINED BETWEEN A PAIR OF FURTHER GAS STREAMS AND IS HEATED ON THE WAY TO THE SUBSTRATE. HEATING MAY BE EFFECTED BY PASSING THE CLOUD SANDWICHED BETWEEN ITS CONFINING STREAMS, BETWEEN A PAIR OF OPPOSED ELECTRIC HEATING ELEMENTS. ALTERNATIVELY, HEATING MAY BE EFFECTED BY HEATING THE CONFINING STREAMS THEMSELVES, PARTICULARLY IF THE CONFINING STREAMS ARE FLAMES EMERGING FROM A BURNER.
Inventors
- 👤 T Kenderi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:22
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/16; B05B7/20; B05B7/201; B05B7/205; B05B7/206; B05B7/22; B05B7/222; B05B7/226
Claims Analysis
Total Claims: 0
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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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |