US3109077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic switch apparatus
Assignee: Allied Control Co Inc
•
Filing: 1959-09-18
•
Granted: 1963-10-29
•
Expires: 1979-09-18
Abstract
No abstract record available.
Inventors
- 👤 John H Horman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:22
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN AN ELECTROMAGNET WHICH INCLUDES AN UPSTANDING MAGNETIZING COIL AND A POLE PIECE, THE IMPROVEMENT COMPRISING A SUPPORT AT THE LOWER END OF THE COIL, AN ARMATURE POSITIONED BENEATH THE SUPPORT AND INCLUDING A FIRST PLATE ELEMENT BELOW THE POLE PIECE AND A SECOND PLATE ELEMENT JOINED TO AND EXTENDING BEYOND THE FIRST PLATE ELEMENT THE PORTION OF THE SECOND PLATE ELEMENT WHICH IS JOINED TO THE FIRST PLATE ELEMENT BEING DISPOSED BELOW THE FIRST PLATE ELEMENT, SAID PLATE ELEMENTS DEFINING AN OPENING WHICH IS PARTLY FORMED BY AN EDGE OF THE FIRST PLATE ELEMENT, AND A RESILIENT HINGE EXTENDING THROUGH THE OPENING AND CONNECTED AT ONE END TO THE ARMATURE AND AT ITS OTHER END TO THE SUPPORT, SAID HINGE MAINTAINING THE ARMATURE IN ENGAGEMENT WITH THE SUPPORT ALONG THE LINE OF INTERSECTION OF SAID EDGE AND THE UPPER SURFACE OF THE FIRST PLATE ELEMENT.
Claim 2
Dependent Claim
146 words
IN AN ELECTROMAGNET WHICH INCLUDES AN UPSTANDING MAGNETIZING COIL AND A POLE PIECE, THE IMPROVEMENT COMPRISING A SUPPORT AT THE LOWER END OF THE COIL, AN ARMATURE POSITIONED BENEATH THE SUPPORT AND INCLUDING A FIRST PLATE ELEMENT BELOW THE POLE PIECE AND A SECOND PLATE ELEMENT JOINED TO AND EXTENDING BEYOND THE FIRST PLATE ELEMENT THE PORTION OF THE SECOND PLATE ELEMENT WHICH IS JOINED TO THE FIRST PLATE ELEMENT BEING DISPOSED BELOW THE FIRST PLATE ELEMENT, SAID PLATE ELEMENTS DEFINING AN OPENING WHICH IS PARTLY FORMED BY AN EDGE OF THE FIRST PLATE ELEMENT, AND A RESILIENT HINGE EXTENDING THROUGH THE OPENING AND CONNECTED AT ONE END TO THE ARMATURE AND AT ITS OTHER END TO THE SUPPORT, SAID HINGE MAINTAINING THE ARMATURE IN ENGAGEMENT WITH THE SUPPORT ALONG THE LINE OF INTERSECTION OF SAID EDGE AND THE UPPER SURFACE OF THE FIRST PLATE ELEMENT.
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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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |