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US3618955A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making an earth puzzle

Assignee: Individual
•
Filing: 1970-03-03
•
Granted: 1971-11-09
•
Expires: 1990-03-03
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Abstract

Abstract An earth puzzle including sphere formed of magnetizable material and a plurality of puzzle pieces which may be placed on the sphere to form a world globe. The puzzle pieces are retained on the sphere by permanent magnets attached to the underside of the puzzle pieces. In making the aforementioned structure, the sphere is first fabricated from magnetizable material. A second sphere is molded on the first sphere after which a representation of the world is painted or otherwise placed on the second sphere. The second sphere is then cut into puzzle pieces and removed from the first sphere. Permanent magnets are then suitably attached to the underside of the puzzle pieces which may then be placed on the first sphere to form a world globe with the permanent magnets retaining the pieces on the first sphere.

Inventors

  • 👤 Bette Abell Barnes

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 17:45
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/12; A63F3/00; A63F3/04; A63F3/0434; A63F2003/0439; A63F2003/0444; A63F9/001; A63F2009/0033; A63F2009/0035; A63F9/1208; A63F2009/1212; A63F2009/124

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 80 words
A method of forming an earth puzzle comprising the steps of providing a sphere including magnetizable material, molding a second sphere on said first sphere, placing a representation of the world on said second sphere, cutting said second sphere into pieces and removing them from said first sphere to form puzzle pieces, and placing permanent magnet material on the undersides of said pieces to allow them to be reassembled and held on the first sphere to form a world globe.
Claim 2
Independent Claim 80 words
A method of forming an earth puzzle comprising the steps of providing a sphere including magnetizable material, molding a second sphere on said first sphere, placing a representation of the world on said second sphere, cutting said second sphere into pieces and removing them from said first sphere to form puzzle pieces, and placing permanent magnet material on the undersides of said pieces to allow them to be reassembled and held on the first sphere to form a world globe.
Claim 3
Dependent Claim 26 words
The method defined in claim 1 wherein the first sphere is formed from plastic containing magnetizable particles and wherein said second sphere is molded from plastic.
Claim 4
Dependent Claim 24 words
The method defined in claim 1 wherein certain puzzle pieces are cut at random while others are cut to form continents of the world.
Claim 5
Independent Claim 77 words
A method of forming an earth puzzle comprising the steps of forming a first sphere with permanent magnet material incorporated therein, forming a second sphere over said first sphere from magnetizable material, placing a representation of the world on said second sphere, cutting said second sphere into various pieces and removing them from said first sphere to form puzzle pieces which may be reassembled and held by magnetism on the first sphere to from a world globe.
Claim 6
Independent Claim 77 words
A method of forming an earth puzzle comprising the steps of forming a first sphere with permanent magnet material incorporated therein, forming a second sphere over said first sphere from magnetizable material, placing a representation of the world on said second sphere, cutting said second sphere into various pieces and removing them from said first sphere to form puzzle pieces which may be reassembled and held by magnetism on the first sphere to from a world globe.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-11-08 1975-05-10 1975-11-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-11-08 1979-05-10 1979-11-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-11-08 1983-05-10 1983-11-09 $7700.00 Window Closed / Lapsed

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