Patent US3258556A successfully refreshed from Google Patents.
US3258556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic actuator and relay comprising same
Assignee: Babcock Electronics Corp
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Filing: 1963-05-13
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Granted: 1966-06-28
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 William F Juptner
- 👤 Frank L Kagele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:47
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H51/00; H01H51/02; H01H51/04; H01H51/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AN ELECTROMAGNETIC ACTUATOR COMPRISING IN COMBINATION, A GENERALLY U-SHAPED MAGNETIC FRAME HAVING A THIN INTERMEDIATE PORTION AND RELATIVELY LARGE MAGNETIC POLE PIECES, AN ARMATURE HAVING A REDUCED CENTRAL PORTION AND RELATIVELY LARGE OPPOSITE END PORTIONS AFFORDING ARMATURE POLE PIECE FOR COOPERATION WITH SAID FRAME POLE PIECES, AN ELONGATED SUPPORT MEMBER FIXED RELATIVE TO SAID FRAME AND PIVOTALLY CARRYING SAID ARMATURE, AND A TUBULAR WINDING ON THE CENTRAL PORTION OF SAID ARMATURE
Claim 2
Dependent Claim
71 words
AN ELECTROMAGNETIC ACTUATOR COMPRISING IN COMBINATION, A GENERALLY U-SHAPED MAGNETIC FRAME HAVING A THIN INTERMEDIATE PORTION AND RELATIVELY LARGE MAGNETIC POLE PIECES, AN ARMATURE HAVING A REDUCED CENTRAL PORTION AND RELATIVELY LARGE OPPOSITE END PORTIONS AFFORDING ARMATURE POLE PIECE FOR COOPERATION WITH SAID FRAME POLE PIECES, AN ELONGATED SUPPORT MEMBER FIXED RELATIVE TO SAID FRAME AND PIVOTALLY CARRYING SAID ARMATURE, AND A TUBULAR WINDING ON THE CENTRAL PORTION OF SAID ARMATURE
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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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |