US3283100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum circuit interrupter with condensing shield serving as one of the main contacts
Assignee: Westinghouse Electric Corp
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Filing: 1964-11-16
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Granted: 1966-11-01
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Expires: 1984-11-16
Abstract
No abstract record available.
Inventors
- 👤 Russell E Frink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:08
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/12; H01H33/60; H01H33/66; H01H33/662; H01H33/66261; H01H2033/66269; H01H2033/66276; H01H33/664
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A VACUUM-TYPE CIRCUIT INTERRUPTER INCLUDING A TUBULAR ENVELOPE OF INSULATING MATERIAL, A TUBULAR METALLIC CONDENSING SHIELD DISPOSED INTERNALLY OF SAID ENVELOPE IN GENERALLY CONCENTRIC RELATIONSHIP WITH RESPECT TO SAID ENVELOPE FOR PROTECTING SAID ENVELOPE FROM BEING COATED WITH METALLIC PARTICLES, A PAIR OF SEPARATE ACING CONTACTS DISPOSED WITHIN SAID CONDENSING SHIELD, A PAIR OF SEPARABLE MAIN CONTACTS WITHIN SAID ENVELOPE IN ELECTRICALLY PARALLEL RELATIONSHIP WITH RESPECT TO SAID SEPARABLE ARCING CONTACTS, MEANS SEPARATING THE MAIN CONTACTS DRING THE OPENING OPERATION BEFORE SEPARATION OF THE ARCING CONTACTS, THE CONDENSING SHIELD BEING ELECTRICALLY CONNECTED TO ONE OF THE SEPARABLE ARCING CONTACTS IN THE CLOSED-CIRCUIT POSITION, AND SAID TUBULAR METALLIC CONDENSING SHIELD COMPRISING A COMPONENT PART OF ONE OF SAID SEPARABLE MAIN CONTACTS TO ASSIST IN CARRYING THE CONTINUOUS CURRENT THROUGH THE INTERRUPTER.
Claim 2
Dependent Claim
130 words
A VACUUM-TYPE CIRCUIT INTERRUPTER INCLUDING A TUBULAR ENVELOPE OF INSULATING MATERIAL, A TUBULAR METALLIC CONDENSING SHIELD DISPOSED INTERNALLY OF SAID ENVELOPE IN GENERALLY CONCENTRIC RELATIONSHIP WITH RESPECT TO SAID ENVELOPE FOR PROTECTING SAID ENVELOPE FROM BEING COATED WITH METALLIC PARTICLES, A PAIR OF SEPARATE ACING CONTACTS DISPOSED WITHIN SAID CONDENSING SHIELD, A PAIR OF SEPARABLE MAIN CONTACTS WITHIN SAID ENVELOPE IN ELECTRICALLY PARALLEL RELATIONSHIP WITH RESPECT TO SAID SEPARABLE ARCING CONTACTS, MEANS SEPARATING THE MAIN CONTACTS DRING THE OPENING OPERATION BEFORE SEPARATION OF THE ARCING CONTACTS, THE CONDENSING SHIELD BEING ELECTRICALLY CONNECTED TO ONE OF THE SEPARABLE ARCING CONTACTS IN THE CLOSED-CIRCUIT POSITION, AND SAID TUBULAR METALLIC CONDENSING SHIELD COMPRISING A COMPONENT PART OF ONE OF SAID SEPARABLE MAIN CONTACTS TO ASSIST IN CARRYING THE CONTINUOUS CURRENT THROUGH THE INTERRUPTER.
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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |