US3138678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically calibrated electromagnetic relay
Assignee: Littelfuse Inc
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Filing: 1962-02-05
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Granted: 1964-06-23
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Expires: 1982-02-05
Abstract
No abstract record available.
Inventors
- 👤 Andrew F Raab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:45
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/24; H01H50/28; H01H50/54; H01H50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
330 words
AN AUTOMATICALLY CALIBRATED RELAY COMPRISING, A MOLDED INSULATING HOUSING MEMBER HAVING A REFERENCE SURFACE, A PRETESTED ARMATURE ASSEMBLY INCLUDING A SPRING ARM, AN ARMATURE CARRIED BY THE SPRING ARM INTERMEDIATE THE ENDS THEREOF AND A CONTACT CARRIED BY THE SPRING ARM ADJACENT ONE END THEREOF, ARMATURE ASSEMBLY SUPPORTING MEANS CARRIED BY THE HOUSING MEMBER AND INCLUDING A MOUNTING SURFACE AT A FIXED DISTANCE FROM THE REFERENCE SURFACE OF THE HOUSING MEMBER, MEANS MOUNTING THE OTHER END OF SAID SPRING ARM ON SAID MOUNTING SURFACE FOR FIXING THE POSITION OF THE ARMATURE ASSEMBLY WITH RESPECT TO THE REFERENCE SURFACE OF THE HOUSING MEMBER AND MEANS EXTENDING THROUGH THE HOUSING MEMBER AND HAVING A TERMINAL FOR COMPLETING AN ELECTRICAL CONNECTION TO THE SPRING ARM OF THE ARMATURE ASSEMBLY, A FIXED CONTACT SUPPORTING MEANS CARRIED BY THE HOUSING MEMBER AND INCLUDING A MOUNTING SURFACE AT A FIXED DISTANCE FROM THE REFERENCE SURFACE OF THE HOUSING MEMBER, MEANS MOUNTING THE FIXED CONTACT ON SAID MOUNTING SURFACE FOR FIXING THE POSITION OF THE FIXED CONTACT WITH RESPECT TO THE REFERENCE SURFACE OF THE HOUSING MEMBER AND MEANS EXTENDING THROUGH THE HOUSING MEMBER AND HAVING A TERMINAL FOR COMPLETING AN ELECTRICAL CONNECTION TO THE FIXED CONTACT, A PRETESTED COIL ASSEMBLY INCLUDING A COIL FORM, A COIL WINDING CARRIED BY THE COIL FORM AND A CORE CARRIED BY THE COIL FORM IN ALIGNMENT WITH THE ARMATURE OF THE ARMATURE ASSEMBLY FOR ATTRACTING THE ARMATURE AGAINST THE ACTION OF THE SPRING ARM WHEN THE COIL WINDING IS ELECTRICALLY ENERGIZED TO ENGAGE AND DISENGAGE SAID CONTACTS, AND COIL ASSEMBLY SUPPORTING MEANS CARRIED BY THE HOUSING MEMBER AND INCLUDING A MOUNTING SURFACE AT A FIXED DISTANCE FROM THE REFERENCE SURFACE OF THE HOUSING MEMBER, MEANS MOUNTING THE CORE ON SAID MOUNTING SURFACE FOR FIXING THE POSITION OF THE COIL ASSEMBLY WITH RESPECT TO THE REFERENCE SURFACE OF THE HOUSING MEMBER AND MEANS EXTENDING THROUGH THE HOUSING MEMBER AND HAVING A TERMINAL FOR COMPLETING AN ELECTRICAL CONNECTION TO THE COIL WINDING.
Claim 2
Dependent Claim
330 words
AN AUTOMATICALLY CALIBRATED RELAY COMPRISING, A MOLDED INSULATING HOUSING MEMBER HAVING A REFERENCE SURFACE, A PRETESTED ARMATURE ASSEMBLY INCLUDING A SPRING ARM, AN ARMATURE CARRIED BY THE SPRING ARM INTERMEDIATE THE ENDS THEREOF AND A CONTACT CARRIED BY THE SPRING ARM ADJACENT ONE END THEREOF, ARMATURE ASSEMBLY SUPPORTING MEANS CARRIED BY THE HOUSING MEMBER AND INCLUDING A MOUNTING SURFACE AT A FIXED DISTANCE FROM THE REFERENCE SURFACE OF THE HOUSING MEMBER, MEANS MOUNTING THE OTHER END OF SAID SPRING ARM ON SAID MOUNTING SURFACE FOR FIXING THE POSITION OF THE ARMATURE ASSEMBLY WITH RESPECT TO THE REFERENCE SURFACE OF THE HOUSING MEMBER AND MEANS EXTENDING THROUGH THE HOUSING MEMBER AND HAVING A TERMINAL FOR COMPLETING AN ELECTRICAL CONNECTION TO THE SPRING ARM OF THE ARMATURE ASSEMBLY, A FIXED CONTACT SUPPORTING MEANS CARRIED BY THE HOUSING MEMBER AND INCLUDING A MOUNTING SURFACE AT A FIXED DISTANCE FROM THE REFERENCE SURFACE OF THE HOUSING MEMBER, MEANS MOUNTING THE FIXED CONTACT ON SAID MOUNTING SURFACE FOR FIXING THE POSITION OF THE FIXED CONTACT WITH RESPECT TO THE REFERENCE SURFACE OF THE HOUSING MEMBER AND MEANS EXTENDING THROUGH THE HOUSING MEMBER AND HAVING A TERMINAL FOR COMPLETING AN ELECTRICAL CONNECTION TO THE FIXED CONTACT, A PRETESTED COIL ASSEMBLY INCLUDING A COIL FORM, A COIL WINDING CARRIED BY THE COIL FORM AND A CORE CARRIED BY THE COIL FORM IN ALIGNMENT WITH THE ARMATURE OF THE ARMATURE ASSEMBLY FOR ATTRACTING THE ARMATURE AGAINST THE ACTION OF THE SPRING ARM WHEN THE COIL WINDING IS ELECTRICALLY ENERGIZED TO ENGAGE AND DISENGAGE SAID CONTACTS, AND COIL ASSEMBLY SUPPORTING MEANS CARRIED BY THE HOUSING MEMBER AND INCLUDING A MOUNTING SURFACE AT A FIXED DISTANCE FROM THE REFERENCE SURFACE OF THE HOUSING MEMBER, MEANS MOUNTING THE CORE ON SAID MOUNTING SURFACE FOR FIXING THE POSITION OF THE COIL ASSEMBLY WITH RESPECT TO THE REFERENCE SURFACE OF THE HOUSING MEMBER AND MEANS EXTENDING THROUGH THE HOUSING MEMBER AND HAVING A TERMINAL FOR COMPLETING AN ELECTRICAL CONNECTION TO THE COIL WINDING.
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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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |