Electromagnetic device having a dual coil for independent tripping thereof
Abstract
Abstract AN ELECTROMAGNETIC DEVICE COMPRISING FIRST AND SECOND SOLENOID COILS, AN ARMATURE ACUTATABLE BY EITHER COIL AND A MAGNETIZABLE FRAME CARRYING THE COILS. A TIME DELAY DEVICE COMPRISING A TUBE OF NON-MAGNETIC MATERIAL WITHIN WHICH IS A MOVABLE MAGNETIZABLE CORE AND WITH WHICH THE FIRST COIL COOPERATES TO ACTUATE THE ARMATURE AFTER A TIME DELAY PERIOD UPON PREDETERMINED ENERGIZATION OF THE FIRST COIL. THE TUBE HAS A POLE PIECE AT ONE END TOWARD WHICH THE ARAMATURE IS ATTRACTED ON PREDETERMINED OVERLOAD CONDITIONS, THE CORE BEING BIASED TOWARD THE END OF THE TUBE AWAY FROM THE POLE PIECE. BOTH COILS SURROUND THE TUBE AND THE FIRST COIL PROVIDES OVERLOAD TRIPPING OF THE DEVICE, WHILE THE SECOND COIL TRIPS THE DEVICE IN RESPONSE TO AN ELECTRICAL SIGNAL INDEPENDENTLY OF WHETHER THE FIRST COIL IS ENERGIZED OR NOT.
Inventors
- 👤 Hal H Bakes
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |