Spherica weight-shifting integral free-rolling tumbler
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United States of America Patent
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Mar 20, 2018
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N/A
app pub date -
Jul 27, 2017
filing date -
Oct 8, 2015
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Abstract
A spherical weight-shifting integral free-rolling tumbler (SWIFT) is provided for rolling along a surface in a command direction. The SWIFT includes a spherical shell, a cubic box within the shell held by spars, and a controller. The box has six panels, and each panel connects to a weight-shifter. Each weight-shifter includes an actuator and a movable mass. The controller for selectively activates the weight-shifter among the panels to translate the mass from the default position to the active position. The controller operates a first switch that corresponds to panels facing away from the surface, and in combination operates a second switch that corresponds to a weight-shifter approximately facing the command direction to roll the shell accordingly.
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