US3192347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter having track resistant coating thereon
Assignee: ABB Inc USA
•
Filing: 1962-01-10
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Granted: 1965-06-29
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Expires: 1982-01-10
Abstract
No abstract record available.
Inventors
- 👤 Allen E Stringfellow
- 👤 David H Reighter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:19
CPC Classifications
H; H01; H01H; H01H9/00; H02; H02B; H02B11/00; Y; Y10; Y10S; Y10S174/00; Y10S174/01; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/26; Y10T428/31504; Y10T428/31511; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
IN AN ELECTRICAL CIRCUIT INTERRUPTER, MOLDED PLASTIC INSULATION SUBJECT TOI TRACKING, HAVING DEPOSITED THEREON A TRACK-RESISTANT COATING COMPRISING AT LEAST 45% BY WEIGHT OF HYDROUS MAGNESIUM CILICATE CONTAINING LESS THAN 0.2% BY WEIGHT CALCIUM, AND A CURED EPOXY RESIN POLYMER.
Claim 2
Dependent Claim
40 words
IN AN ELECTRICAL CIRCUIT INTERRUPTER, MOLDED PLASTIC INSULATION SUBJECT TOI TRACKING, HAVING DEPOSITED THEREON A TRACK-RESISTANT COATING COMPRISING AT LEAST 45% BY WEIGHT OF HYDROUS MAGNESIUM CILICATE CONTAINING LESS THAN 0.2% BY WEIGHT CALCIUM, AND A CURED EPOXY RESIN POLYMER.
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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |