Electromagnetic relays
Abstract
Abstract ELECTROMAGNETIC RELAYS INCLUDE A BASE MEMBER, COIL, A CORE EXTENDING THROUGH THE COIL, A LEAF SPRING, AND AN ARMATURE STAKED TO THE LEAF SPRING AND MOVEABLY RESPONSIVE TO THE MAGNETIC FIELD OF THE COIL CORE PRODUCED BY THE COIL. THE BASE MEMBER IS RECESSED AND A MOVEABLE CONTACT IS CARRIED BY THE LEAF SPRING OR ARMATURE AND IS ADAPTED TO ENGAGE A STATIONARY CONTACT LOCATED EITHER ABOVE OR BELOW THE MOVEABLE CONTACT IN THE RECESS IN RESPONSE TO THE CURRENT FLOW CONDITION THROUGH THE COIL. IN A SECOND EMBODIMENT A SECOND PAIR OF LEAF SPRINGS ARE PROVIDED CARRYING THE MOVEABLE CONTACTS, THE SECOND LEAF SPRINGS BEING ACTUATED BY A RIGID ARM ATTACHED TO THE ARMATURE AND ITS LEAF SPRING. THE CONTACTS ARE LOCATED CLOSELY ADJACENT THE MAGNETIC CIRCUIT FORMED BY THE CORE AND ARMATURE, THE MAGNETIC FLUX AT THE CONTACTS BEING SUBSTANTIALLY INCREASED TO EFFECT MAGNETIC BLOWOUT AT THE CONTACTS.
Inventors
- 👤 Ralph W Alten
Bibliographic Details
Claims Analysis
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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) | 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 |