Circuit breaker with short circuit magnetic tripping means
Abstract
Abstract AN ELECTRICAL CIRCUIT INTERRUPTER HAS A MOVABLE CONTACT CARRIED BY A CONTACT OPERATING MEMBER FOR MOVEMENT RELATIVE TO STATIONARY CONTACTS BETWEEN CLOSED AND OPEN CIRCUIT POSITIONS. A COUPLING MEMBER MOVES THE OPERATING MEMBER FROM CLOSED TO OPEN CIRCUIT POSITION UPON RELEASE OF LATCHING MEANS ENGAGED WITH A STORED ENERGY DEVICE WHICH IS ENGAGEABLE WITH THE COUPLING MEANS. THE CONTACT OPERATING MEMBER CARRIES AN ARMATURE WHICH IS SUBJECT TO THE MAGNETIC ATTRACTION OF A SOLENOID COIL SO AS TO BE MOVABLE TO OPEN POSITION UPON PASSAGE OF A SHORT CIRCUIT CURRENT OF PREDETERMINED MAGNITUDE THERETHROUGH. THE COUPLING MEMBER RELEASES THE OPERATING MEMBER UPON MOVEMENT OF THE ARMATURE TOWARD THE OPEN CIRCUIT POSITION AS THE RESULT OF SOLENOID ATTRACTION. MOST ADVANTAGEOUSLY, THE CIRCUIT INTERRUPTER INCLUDES AT LEAST TWO POLES, AND THE MOVABLE CONTACT OF THE SECOND POLE IS MOVED TO ITS OPEN CIRCUIT POSITION BY MOVEMENT OF THE COUPLING MEMBER.
Inventors
- 👤 Henry G Willard
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |