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US3251960A Expired / Lapsed US ⏱️ 0.0 years remaining

Magnetically operated master switch contacts

Assignee: ABB Inc USA
•
Filing: 1963-08-26
•
Granted: 1966-05-17
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Expires: 1983-08-26
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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)

FR720957A Cited
US2448779A Cited
US2718567A Cited
US3114084A Cited

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

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