US2776253A
Expired / Lapsed
US
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Method of making airfoil sections
Assignee: SIEGFRIED G BART
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Filing: 1952-07-08
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Granted: 1957-01-01
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Expires: 1972-07-08
Abstract
No abstract record available.
Inventors
- 👤 Elwood L Scholl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:35
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0025; B29D99/0028; B64; B64C; B64C11/00; B64C11/16; B64C11/20; B29C; B29C41/00; B29K; B29K2009/00; B29K2027/00; B29K2027/06; B29K2995/00; B29K2995/0003; B29K2995/0005; Y; Y10; Y10S; Y10S205/00; Y10S205/917; Y10S29/00; Y10S29/012
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
IN THE ART OF CURING AN INITIALLY UNCURED RUBBERCONTAINING MATERIAL HAVING ADHESIVE QUALITIES AND A SURFACE FORMED AT LEAST IN PART OF AN ELECTRO-CONDUCTIVE MATERIAL, WHILE SIMULTANEOUSLY BONDING A LAYER OF ELECTROMETAL TO SAID SURFACE, THE METHOD WHICH CONSISTS IN SUBJECTING SAID SURFACE TO ELECTROLYSIS IN AN ELECTROLYTIC BATH FUNCTIONING TO DEPOSIT A LAYER OF ELECTRO-METAL ON SAID SURFACE AND SIMULTANEOUSLY APPLYING EXTRANEOUS HEAT TO THE ELECTROLYTE TO ACHIEVE A TEMPERATURE OF ABOUT 140* F.TO CURE THE RUBBER IN THE RUBBER-CONTAINING MATERIAL.
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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |