Magnetically responsive bowling pins
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 3, 1998
Issued Date -
N/A
app pub date -
Sep 26, 1996
filing date -
Jun 18, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A magnetically responsive bowling pin having a first upwardly open cavity in its head portion and a second elongated cavity smaller and cross-section and extending downwardly in the head portion of a bowling pin. The first cavity receives a plastic cap having a top portion and a skirt with a permanent magnet and a plastic plug disposed in press fit engagement within the skirt. The skirt in turn is in press fit engagement with the wall of the first cavity to retain the assembled magnet and plastic parts in the desired position in the cavity. The second elongated cavity serves to remove material from the body of the bowling pin and thus compensates for the added weight of the permanent magnet and the slight additional weight of the plastic cap and plastic plug. As a result, the desired weight, weight distribution and balance of the bowling pin is not disturbed. In a second embodiment, the plastic cap has a through opening accessible upwardly and a small steel cap is mounted within the plastic cap and is exposed upwardly through the opening. The cap is also in engagement with the permanent magnet and results in enhancement of the magnetic forces.
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