US3251960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically operated master switch contacts
Assignee: ABB Inc USA
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Filing: 1963-08-26
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Granted: 1966-05-17
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Petterson Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:57
CPC Classifications
H; H01; H01H; H01H5/00; H01H5/02; H01H36/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
230 words
A CONTROL SWITCH COMPRISING A MOVABLE OPERATING SHAFT MOVABLE TO A PLURALITY OF OPERATING POSITIONS AND HAVING A PLURALITY OF FIRST MAGNETIC MEMBERS THEREON, A PLURALITY OF MOVABLE CONTACT MEMBERS, AND A PLURALITY OF SECOND MAGNETIC MEMBERS CONNECTED TO RESPECTIVE MOVABLE CONTACT MEMBERS OF SAID PLURALITY OF MOVABLE CONTACT MEMBERS; SAID PLURALITY OF SECOND MAGNETIC MEMBERS BEING MOVABLE TOWARD AND AWAY FROM RESPECTIVE MAGNETIC MEMBERS OF SAID PLURALITY OF FIRST MAGNETIC MEMBERS RESPONSIVE TO MOVEMENT OF SAID OPERATING SHAFT FROM ONE TO ANOTHER OF ITS SAID PLURALITY OF OPERATING POSITIONS; STOP MEANS FOR PREVENTING ENGAGEMENT BETWEEN RESPECTIVE FIRST AND SECOND CONTACT MEMBERS WHEN MOVED TOWARD ONE ANOTHER, AND A PLURALITY OF STATIONARY CONTACTS FOR COOPERATING WITH RESPECTIVE MOVABLE CONTACTS OF SAID PLURALITY OF MOVABLE CONTACTS; EACH OF SAID PLURALITY OF MOBABLE CONTACTS BEING MOVABLE BETWEEN AN ENGAGED AND DISENGAGED POSITION WITH RESPECT TO ITS SAID RESPECTIVE STATIONARY CONTACT RESPONSIVE TO MOVEMENT OF ITS SAID RESPECTIVE SECOND MAGNETIC MEMBERS INTO ITS SAID STOP MEANS; AN INDEXING MEANS INCLUDING AN INDEXING MAGNETIC MEMBER HAVING A PLURALITY OF SPACED EXTENDING PORTIONS AND A PERMANENT MAGNET MEMBER; ONE OF SAID MEMBERS BEING SECURED TO SAID OPERATING SHAFT; SAID PERMANENT MAGNET MEMBER HAVING EXTENDING POLE FACES ADAPTED TO SPAN ACROSS ADJACENT PAIRS OF SPACED EXTENDING PORTIONS THEREBY TO BIAS SAID MAGNETIC MEMBER INTO ANY ONE OF A PLURALITY OF POSITIONS DETERMINED BY SAID EXTENDING PORTIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |