US2806109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc resistant molded members and electrical apparatus embodying them
Assignee: Westinghouse Electric Corp
•
Filing: 1954-03-19
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Granted: 1957-09-10
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Expires: 1974-03-19
Abstract
No abstract record available.
Inventors
- 👤 Robert F Sterling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:56
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/36; C; C08; C08G; C08G8/00; C08G8/28; H01H; H01H33/00; H01H33/70; H01H33/72; Y; Y10; Y10S; Y10S174/00; Y10S174/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN A CICUIT INTERRUPTER DEVICE HAVING AN ELECTRICAL CURRENT CARRYING MEMBER WHICH DEVELOPS AN ARC DURING CIRCUIT INTERRUPTING OPERATION OF THE DEVICE, A MOLDED ELECTRICALLY INSULATING MEMBER DISPOSED ADJACENT TO THE ELECTRICAL CURRENT CARRYING MEMBER AND IN CLOSE PROXIMITY TO POINT WHERE THE ARE DEVELOPS WHEREBY THE SURFACE OF THE MOLDED INSULATING MEMBER IS HEATED AND DECOMPOSED THEREBY, AT LEAST A SUBSTANTIAL THICKNESS OF THE SURFACE OF THE MOLDED ELECTRICALLY INSULATING MEMBER COMPOSED OF FROM 90% TO 30% BY WEIGHT OF PHENOL-ALDEHYDE RESIN, SAID PHENOL-ALDEHYDE RESIN ALONE CHARACTERIZED BY TRACKING WHEN SUBJECT TO ARCING AND THE BALANCE COMPRISING INITMATELY ADMIXED FILLERS, AT LEAST 3% BY WEIGHT OF SAID SURFACE OF THE MEMBER COMPOSED OF FINELY DIVIDED, NONCONDUCTING INORGANIC REFRACTORY OF AN AVERAGE PARTICLE SIZE NOT IN EXCESS OF 5 MICRONS.
Claim 2
Dependent Claim
130 words
IN A CICUIT INTERRUPTER DEVICE HAVING AN ELECTRICAL CURRENT CARRYING MEMBER WHICH DEVELOPS AN ARC DURING CIRCUIT INTERRUPTING OPERATION OF THE DEVICE, A MOLDED ELECTRICALLY INSULATING MEMBER DISPOSED ADJACENT TO THE ELECTRICAL CURRENT CARRYING MEMBER AND IN CLOSE PROXIMITY TO POINT WHERE THE ARE DEVELOPS WHEREBY THE SURFACE OF THE MOLDED INSULATING MEMBER IS HEATED AND DECOMPOSED THEREBY, AT LEAST A SUBSTANTIAL THICKNESS OF THE SURFACE OF THE MOLDED ELECTRICALLY INSULATING MEMBER COMPOSED OF FROM 90% TO 30% BY WEIGHT OF PHENOL-ALDEHYDE RESIN, SAID PHENOL-ALDEHYDE RESIN ALONE CHARACTERIZED BY TRACKING WHEN SUBJECT TO ARCING AND THE BALANCE COMPRISING INITMATELY ADMIXED FILLERS, AT LEAST 3% BY WEIGHT OF SAID SURFACE OF THE MEMBER COMPOSED OF FINELY DIVIDED, NONCONDUCTING INORGANIC REFRACTORY OF AN AVERAGE PARTICLE SIZE NOT IN EXCESS OF 5 MICRONS.
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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) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |