US3287531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal bushing having impedance means associated therewith
Assignee: Mitsubishi Electric Corp
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Filing: 1964-09-30
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Granted: 1966-11-22
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Expires: 1984-09-30
Abstract
No abstract record available.
Inventors
- 👤 Yonezawa Yoshimasa
- 👤 Tanabe Toshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:24
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/005; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A LIVE-TANK HIGH-POWER CIRCUIT INTERRUPTER INCLUDING A METALLIC ENCLOSING TANK STRUCTURE AND A PAIR OF INTERORLY-EXTENDING TERMINAL BUSHINGS, INSULATING SUPPORTING MEANS FOR SUPPORTING SAID LIVE-TANK UP IN THE AIR AWAY FROM GROUND POTENTIAL, MAIN CONTACT MEANS AND SERIALLYRELATED DISCONNECTING CONTACT MEANS DISPOSED INTERIORLY OF SAID LIVE METALLIC ENCLOSING TANK, OPERATING MEANS FOR OPENING SAID MAIN CONTACT MEANS AND SAID SERIALLY-RELATED DISCONNECTING CONTACT MEANS IN SEQUENCE, IMPEDANCE MEANS SHUNTING SAID MAIN CONTACT MEANS AND PROVIDING A CONTINUED CURRENT PATH FOLLOWING OPENING OF THE MAIN CONTACT MEANS, ONE OF THE TERMINAL BUSHINGS HAVING EXTERIOR AND INTERIOR CASING ELEMENTS ON OPPOSITE SIDES OF THE TANK STRUCTURE, SAID INTERIOR CASING ELEMENT BEING WHOLLY COMPOSED OF RESISTANCE MATERIAL, AND SAID INTERIOR CASING ELEMENT WHOLLY PROVIDING SAID IMPEDANCE MEANS.
Claim 2
Dependent Claim
123 words
A LIVE-TANK HIGH-POWER CIRCUIT INTERRUPTER INCLUDING A METALLIC ENCLOSING TANK STRUCTURE AND A PAIR OF INTERORLY-EXTENDING TERMINAL BUSHINGS, INSULATING SUPPORTING MEANS FOR SUPPORTING SAID LIVE-TANK UP IN THE AIR AWAY FROM GROUND POTENTIAL, MAIN CONTACT MEANS AND SERIALLYRELATED DISCONNECTING CONTACT MEANS DISPOSED INTERIORLY OF SAID LIVE METALLIC ENCLOSING TANK, OPERATING MEANS FOR OPENING SAID MAIN CONTACT MEANS AND SAID SERIALLY-RELATED DISCONNECTING CONTACT MEANS IN SEQUENCE, IMPEDANCE MEANS SHUNTING SAID MAIN CONTACT MEANS AND PROVIDING A CONTINUED CURRENT PATH FOLLOWING OPENING OF THE MAIN CONTACT MEANS, ONE OF THE TERMINAL BUSHINGS HAVING EXTERIOR AND INTERIOR CASING ELEMENTS ON OPPOSITE SIDES OF THE TANK STRUCTURE, SAID INTERIOR CASING ELEMENT BEING WHOLLY COMPOSED OF RESISTANCE MATERIAL, AND SAID INTERIOR CASING ELEMENT WHOLLY PROVIDING SAID IMPEDANCE MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |