US2916399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treatment of protective coatings
Assignee: LECHLER PAUL FA
•
Filing: 1955-07-14
•
Granted: 1959-12-08
•
Expires: 1975-07-14
Abstract
No abstract record available.
Inventors
- 👤 Kurz Rainer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:08
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/02; B05D3/0254; B05D3/0281
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE PROCESS WHICH COMPRISES DISTRIBUTING MAGNETICALLY HEAT DEVELOPING PARTICLES IN A NON-CONDUCTING COATING HAVING A COEFFICIENT OF HEAT CONDUCTIVITY OF LESS THAN 0.01, APPLYING SAID COATING OVER AN OUTER SURFACE OF A METAL BASE CAPABLE OF DEVELOPING EDDY CURRENTS BY INDUCTION, AND SUBJECTING SIMULTANEOUSLY SAID BASE, SAID COATING AND SAID PARTICLES TO A HIGH FREQUENCY MAGNETIC ALTERNATING FIELD TO PRODUCE SAID EDDY CURRENTS AND TO QUICKLY HEAT SAID COATING BY THE COMBINED EFFECT OF SAID EDDY CURRENTS AND SAID HEAT DEVELOPING PARTICLES.
Claim 2
Dependent Claim
82 words
THE PROCESS WHICH COMPRISES DISTRIBUTING MAGNETICALLY HEAT DEVELOPING PARTICLES IN A NON-CONDUCTING COATING HAVING A COEFFICIENT OF HEAT CONDUCTIVITY OF LESS THAN 0.01, APPLYING SAID COATING OVER AN OUTER SURFACE OF A METAL BASE CAPABLE OF DEVELOPING EDDY CURRENTS BY INDUCTION, AND SUBJECTING SIMULTANEOUSLY SAID BASE, SAID COATING AND SAID PARTICLES TO A HIGH FREQUENCY MAGNETIC ALTERNATING FIELD TO PRODUCE SAID EDDY CURRENTS AND TO QUICKLY HEAT SAID COATING BY THE COMBINED EFFECT OF SAID EDDY CURRENTS AND SAID HEAT DEVELOPING PARTICLES.
References Cited (Backward Citations)
GB335769A
Cited
US2407833A
Cited
US2393541A
Cited
US2419116A
Cited
US2522082A
Cited
US2562911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |