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US3277681A Expired / Lapsed US ⏱️ 0.0 years remaining

Dual key ring including magnetic fastener

Assignee: Monarch Tool & Machinery Co
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Filing: 1965-05-11
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Granted: 1966-10-11
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Expires: 1985-05-11
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Abstract

No abstract record available.

Inventors

  • 👤 Ahmet K Bey

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 12:05
CPC Classifications
A; A44; A44B; A44B15/00; A44B15/002; Y; Y10; Y10T; Y10T24/00; Y10T24/32; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676; Y10T70/8703

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 241 words
A DUAL KEY RING HAVING TWO SEPARABLE KEY RINGS COMPRISING THE COMBINATION OF A NON-MAGNETIZABLE CYLINDRICAL HOUSING HAVING A SOLID BOTTOM AND AN OPEN TOP, A FIRST KEY RING ATTACHED TO THE OUTSIDE OF THE BOTTOM OF SAID HOUSING, A CIRCULAR MAGNETIZABLE BASE PLATE DISPOSED WITHING SAID HOUSING AND AGAINST THE BOTTOM THEREOF, AN ANNULAR CERAMIC MAGNET HAVING A CIRCULAR CENTRAL OPENING THERETHROUGH AND BEING OF OPPOSITE POLARITY AT OPPOSITE ENDS OF SAID OPENING, SAID CERAMIC MAGNET BEING DISPOSED WITHIN SAID HOUSING WITH ONE END AGAINST SAID BASE PLATE WHEREBY SAID BASE PLATE COVERS ONE END OF SAID OPENING, SAID BASE PLATE BEING MAGNETIZED WITH A FIRST POLARITY BY ITS ENGAGEMENT WITH SAID MAGNET, AN ANNULAR COVER PLATE DISPOSED WITHIN SAID HOUSING AGAINST THE OTHER END OF SAID MAGNET, SAID COVER PLATE HAVING A CIRCULAR CENTRAL OPENINGS THERETHROUGH ALIGNED WITH THE OPENING IN SAID MAGNET, SAID COVER PLATE BEING MAGNETIZED WITH A SECOND POLARITY BY ITS WNGAGEMENT WITH SAID MAGNET, AND A MAGNETIZABLE CYLINDRICAL PIN ADAPTED TO FIT THROUGH THE OPENINGS IN SAID COVER PLATE AND SAID MAGNET SO AS TO ABUTTINGLY ENGAGE SAID BASE PLATE, SAID PIN BEING IN SLIDING ENGAGEMENT WITH SAID COVER PALTE WHEREBY SAID PIN IS MAGNETIZED WITH SAID SECOND POLARITY, AND A SECOND KEY RING ATTACHED TO THE OUTER END OF SAID PIN WHEREBY SAID FIRST AND SECOND KEY RINGS CAN BE ATTACHED AND SEPARATED BY THE INSERTION AND WITHDRAWAL OF SAID PIN THROUGH SAID OPENINGS.
Claim 2
Dependent Claim 241 words
A DUAL KEY RING HAVING TWO SEPARABLE KEY RINGS COMPRISING THE COMBINATION OF A NON-MAGNETIZABLE CYLINDRICAL HOUSING HAVING A SOLID BOTTOM AND AN OPEN TOP, A FIRST KEY RING ATTACHED TO THE OUTSIDE OF THE BOTTOM OF SAID HOUSING, A CIRCULAR MAGNETIZABLE BASE PLATE DISPOSED WITHING SAID HOUSING AND AGAINST THE BOTTOM THEREOF, AN ANNULAR CERAMIC MAGNET HAVING A CIRCULAR CENTRAL OPENING THERETHROUGH AND BEING OF OPPOSITE POLARITY AT OPPOSITE ENDS OF SAID OPENING, SAID CERAMIC MAGNET BEING DISPOSED WITHIN SAID HOUSING WITH ONE END AGAINST SAID BASE PLATE WHEREBY SAID BASE PLATE COVERS ONE END OF SAID OPENING, SAID BASE PLATE BEING MAGNETIZED WITH A FIRST POLARITY BY ITS ENGAGEMENT WITH SAID MAGNET, AN ANNULAR COVER PLATE DISPOSED WITHIN SAID HOUSING AGAINST THE OTHER END OF SAID MAGNET, SAID COVER PLATE HAVING A CIRCULAR CENTRAL OPENINGS THERETHROUGH ALIGNED WITH THE OPENING IN SAID MAGNET, SAID COVER PLATE BEING MAGNETIZED WITH A SECOND POLARITY BY ITS WNGAGEMENT WITH SAID MAGNET, AND A MAGNETIZABLE CYLINDRICAL PIN ADAPTED TO FIT THROUGH THE OPENINGS IN SAID COVER PLATE AND SAID MAGNET SO AS TO ABUTTINGLY ENGAGE SAID BASE PLATE, SAID PIN BEING IN SLIDING ENGAGEMENT WITH SAID COVER PALTE WHEREBY SAID PIN IS MAGNETIZED WITH SAID SECOND POLARITY, AND A SECOND KEY RING ATTACHED TO THE OUTER END OF SAID PIN WHEREBY SAID FIRST AND SECOND KEY RINGS CAN BE ATTACHED AND SEPARATED BY THE INSERTION AND WITHDRAWAL OF SAID PIN THROUGH SAID OPENINGS.

References Cited (Backward Citations)

GB914208A Cited
US3141216A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-10-10 1970-04-11 1970-10-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-10-10 1974-04-11 1974-10-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-10-10 1978-04-11 1978-10-11 $7700.00 Window Closed / Lapsed

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