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US4399595A Expired / Lapsed US ⏱️ 0.0 years remaining

Magnetic closure mechanism

Assignee: Individual
•
Filing: 1981-02-11
•
Granted: 1983-08-23
•
Expires: 2001-02-11
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Abstract

Abstract Disclosed is a magnetic closure mechanism comprising two strips of flexible, non-magnetic material having magnets incorporated in them, mechanical detent means for holding strips adjacent each other such that faces having opposite polarity are adjacent each other, closing the mechanism, and means for moving the magnets relative to each other such that faces having the same polarity are brought adjacent each other, opening the mechanism.

Inventors

  • 👤 John Yoon
  • 👤 Jason Yoon

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 12:05
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0231; H01F7/0252; H01F7/0263; A; A41; A41F; A41F1/00; A41F1/002; Y; Y10; Y10T; Y10T24/00; Y10T24/32

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 224 words
A magnetic closure mechanism comprising: a first strip of flexible, non-magnetic material having; a longitudinally extending recess, said recess being rectangular in plan view, and having a flat bottom, and a series of upwardly extend tabs along an outer edge of the strip, and a first set of magnets embedded beneath said recess within said first strip, said magnets being alternately oriented so that faces are adjacent having the opposite polarity; a second strip of flexible, non-magnetic material having; a longitudinally extending protrusion, said protrusion being rectangular in plan view and having a flat inner portion, and a series of recesses, said recesses being sized, shaped, and spaced to receive said tabs on said first strip whereby said strips are mechanically joined together against forces acting away from the strips, and a second set of magnets slidably placed within said second strip, said magnets being alternately oriented so that faces having a polarity opposite to the polarity of the adjacent face of the magnets embedded in said first strip are juxtaposed when said first and second strips are in a closed position; and means for moving said second set of magnets longitudinally within said second strip so that facing magnets have in said two strips the same polarity, thus magnetically pushing said tabs out of said recesses and releasing the first and second strips.
Claim 2
Dependent Claim 224 words
A magnetic closure mechanism comprising: a first strip of flexible, non-magnetic material having; a longitudinally extending recess, said recess being rectangular in plan view, and having a flat bottom, and a series of upwardly extend tabs along an outer edge of the strip, and a first set of magnets embedded beneath said recess within said first strip, said magnets being alternately oriented so that faces are adjacent having the opposite polarity; a second strip of flexible, non-magnetic material having; a longitudinally extending protrusion, said protrusion being rectangular in plan view and having a flat inner portion, and a series of recesses, said recesses being sized, shaped, and spaced to receive said tabs on said first strip whereby said strips are mechanically joined together against forces acting away from the strips, and a second set of magnets slidably placed within said second strip, said magnets being alternately oriented so that faces having a polarity opposite to the polarity of the adjacent face of the magnets embedded in said first strip are juxtaposed when said first and second strips are in a closed position; and means for moving said second set of magnets longitudinally within said second strip so that facing magnets have in said two strips the same polarity, thus magnetically pushing said tabs out of said recesses and releasing the first and second strips.
Claim 3
Dependent Claim 22 words
A magnetic closure mechanism as recited in claim 1 wherein the non-magnetic material of which said first strip is made is plastic.
Claim 4
Dependent Claim 24 words
A magnetic closure mechanism as recited in claims 1 or 2 wherein the non-magnetic material of which said second strip is made is plastic.
Claim 5
Dependent Claim 18 words
A magnetic closure mechanism as recited in claim 1 wherein said first set of magnets are bar magnets.
Claim 6
Dependent Claim 20 words
A magnetic closure mechanism as recited in claim 1 or 4 wherein said second set of magnets are bar magnets.
Claim 7
Dependent Claim 49 words
A magnetic closure mechanism as recited in claim 1 and further comprising resilient means longitudinally biasing said second set of magnets to move within said second strip towards a position operable to magnetically induce closure of said first and second strips and engagement of said tabs with said recesses.

References Cited (Backward Citations)

CA617939A Cited
US2389299A Cited
FR1217694A Cited
US3008209A Cited
US3102314A Cited
US3326399A Cited
US3325869A Cited
US3919743A Cited
US4015296A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-08-22 1987-02-21 1987-08-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-08-22 1991-02-21 1991-08-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-08-22 1995-02-21 1995-08-23 $7700.00 Window Closed / Lapsed

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