Playground equipment
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United States of America Patent
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Jan 16, 2018
Issued Date -
N/A
app pub date -
May 4, 2015
filing date -
May 6, 2014
priority date (Note) -
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Abstract
The invention relates to a playground equipment comprising a platform for a user to sit or stand on and mounted to the ground via a first shaft and a second shaft. The shafts are connected to each other at an angle and coupled in a gear transmission system. Because of the gearing between the shafts a first rotational speed of the first shaft yields a second rotational speed of the second shaft different from the first rotational speed. The gear transmission system may comprise an epicyclic gear train such as a planetary gear system. The gear transmission system may yield a gear ratio in the range of 1.5-10 such as in the range of 3-7.
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