US3922433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminous metal with glass beads bonded to a metal substrate
Assignee: Alcoa Corp
•
Filing: 1973-06-08
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Granted: 1975-11-25
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Expires: 1993-06-08
Abstract
Abstract Spherical glass beads of less than 30 mils in average diameter and preferably less than 5 mils in average diameter are embedded in metallic coatings such as aluminum, zinc, tin or lead to a depth of from 1/6 to 1/2 their average diameter by propelling said spheres by compressed air against the coating while it is in a molten condition.
Inventors
- 👤 William C Patterson
- 👤 Charles I Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:43
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G02B5/126; G02B5/128; C; C23; C23C; C23C2/00; C23C2/26; C23C2/265; G09; G09F; G09F13/00; G09F13/16; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/26; Y10T428/263; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A REFLECTIVE METAL OBJECT HAVING ENCHANCED CORROSION RESISTANCE AND BOTH WET DRY RETRO-REFLECTION CHARACTERISTICS AND COMPRISING AN IRON OR IRON BASE ALLOY SUBSTRATE HAVING A 1-5 MIL THICKNESS LAYER OF ALUMINUM THEREON FORMED BY DIPPING THE SUBSTRATE IN A MOLTEN ALUMINUM BATH AND HAVING GLASS BEADS OF 1-5 MIL AVERAGE DIAMETER EMBEDDED BY AIR PRESSURE INTO SAID ALUMINUM LAYER TO A DEPT OF ABOUT 1/6 TO 1/2 THE AVERAGE DIAMETER TO THE BEADS, SAID BEADS COMPRISING A MIXTURE OF BEADS HAVING RESPECTIVE REFRACTIVE TO THE SURFACE 1.9 AND ABOUT 2/1 TO THEREBY IMPART REFLECTIVITY INDICES OF ABOUT REGARDLESS OF THE PRESENCE OR ABSENCE OF A FILM OF WATER THEREON.
Claim 2
Dependent Claim
109 words
A REFLECTIVE METAL OBJECT HAVING ENCHANCED CORROSION RESISTANCE AND BOTH WET DRY RETRO-REFLECTION CHARACTERISTICS AND COMPRISING AN IRON OR IRON BASE ALLOY SUBSTRATE HAVING A 1-5 MIL THICKNESS LAYER OF ALUMINUM THEREON FORMED BY DIPPING THE SUBSTRATE IN A MOLTEN ALUMINUM BATH AND HAVING GLASS BEADS OF 1-5 MIL AVERAGE DIAMETER EMBEDDED BY AIR PRESSURE INTO SAID ALUMINUM LAYER TO A DEPT OF ABOUT 1/6 TO 1/2 THE AVERAGE DIAMETER TO THE BEADS, SAID BEADS COMPRISING A MIXTURE OF BEADS HAVING RESPECTIVE REFRACTIVE TO THE SURFACE 1.9 AND ABOUT 2/1 TO THEREBY IMPART REFLECTIVITY INDICES OF ABOUT REGARDLESS OF THE PRESENCE OR ABSENCE OF A FILM OF WATER THEREON.
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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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |