US3347698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio frequency plasma flame spraying
Assignee: Metco Inc
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Filing: 1964-01-10
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Granted: 1967-10-17
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Expires: 1984-01-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert S Ingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:10
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/30; B; B05; B05B; B05B7/00; B05B7/16; B05B7/22; B05B7/222; B05B7/226; C; C23; C23C; C23C4/00; C23C4/12; C23C4/134; H01; H01J; H01J37/00; H01J37/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD FOR FLAME SPRAYING WITH A RADIO FREQUENCY PLASMA WHICH COMPRISES FLOWING A GAS AND GENERATING A RADIO FREQUENCY PLASMA FLAME FROM A RADIO FREQUENCY GENERATOR AGAINST A SURVACE TO BE SPRAYED, INTRODUCING HEAT-FUSIBLE MATERIAL TO BE SPRAYED INTO THE RADIO FREQUENCY PLASMA FLAME, AND COUPLING THE SURFACE TO THE GENERATOR THROUGH A PATH HAVING AN EFFECTIVE LENGTH APPROXIMATELY EQUAL TO A MULTIPLE OF 1/4 OF THE WAVE LENGTH OF THE RADIO FREQUENCY OF THE GENERATOR TO FORM A SECONDARY OUT OF PHASE SYMPATHETIC OSCILLATING CIRCUIT CAUSING DIFFUSE RF ARCING AGAINST THE SURFACE THEREBY DEPOSITING THE HEAT-FUSIBLE MATERIAL ON THE SURFACE.
Claim 2
Independent Claim
102 words
A METHOD FOR FLAME SPRAYING WITH A RADIO FREQUENCY PLASMA WHICH COMPRISES FLOWING A GAS AND GENERATING A RADIO FREQUENCY PLASMA FLAME FROM A RADIO FREQUENCY GENERATOR AGAINST A SURVACE TO BE SPRAYED, INTRODUCING HEAT-FUSIBLE MATERIAL TO BE SPRAYED INTO THE RADIO FREQUENCY PLASMA FLAME, AND COUPLING THE SURFACE TO THE GENERATOR THROUGH A PATH HAVING AN EFFECTIVE LENGTH APPROXIMATELY EQUAL TO A MULTIPLE OF 1/4 OF THE WAVE LENGTH OF THE RADIO FREQUENCY OF THE GENERATOR TO FORM A SECONDARY OUT OF PHASE SYMPATHETIC OSCILLATING CIRCUIT CAUSING DIFFUSE RF ARCING AGAINST THE SURFACE THEREBY DEPOSITING THE HEAT-FUSIBLE MATERIAL ON THE SURFACE.
References Cited (Backward Citations)
US3264508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |