Methods for masking selected portions of articles to be coated
Abstract
Abstract THE PARTICULAR EMBODIMENTS DESCRIBED HEREIN AS ILLUSTRATIVE OF THE PRESENT INVENTION RELATE TO THE MASKING OF PARTICULAR PORTIONS OF AN ARTICLE TO BE COATED. MORE PARTICULARLY, THE PRESENT INVENTION AS DISCLOSED HEREIN IS DIRECTED TO TECHNIQUES FOR MASKING SELECTED PORTIONS OF HEATCONDUCTIVE ARTICLES THAT ARE TO BE HEATED AND THEN FUSIONCOATED BY APPLICATION THERETO OF PULVERULENT PARTICLES OF FUSIBLE THERMOPLASTIC OR THERMOSETTING COATING MATERIALS. AFTER THE ARTICLES HAVE BEEN COATED AND THE MASKS ARE REMOVED, THE COATINGS ARE TERMINATED IN WELL-DEFINED EDGES AT THE BOUNDARIES OF THE MASKED PORTIONS. THE MASK IS MADE OF A LOW THERMAL CONDUCTIVITY MATERIAL WHICH IS CAPABLE OF WITHSTANDING PROLONGED EXPOSURE TO ELEVATED TEMPERATURES SUCH AS CORK, WOOD, SHEET ASBESTOS AND FELT AND THE COATING CAN BE APPLIED BY A FLUIDIZED BED.
Inventors
- 👤 Rene J Al
Bibliographic Details
Claims Analysis
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |