Hub and cylinder design for flywheel system for mobile energy storage
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United States of America Patent
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-
Jan 16, 2001
Issued Date -
N/A
app pub date -
Aug 4, 1997
filing date -
Nov 8, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flywheel assembly for storing energy and rotatable in response to the rotation of a shaft includes a hub having a transition portion having a constant stress intermediate region operatively coupled to the shaft and an outer connecting portion forming a flexible cylinder, wherein the shaft and the flexible cylinder are substantially coaxial, and an outer cylinder wherein a majority of the mass of the flywheel assembly is concentrated. The flexible cylinder includes connecting pads disposed at opposing edges of the outer side of the flexible cylinder thereby permitting connection to the outer cylinder. The outer cylinder increases radially responsive to a corresponding increase in rotational speed of the flywheel assembly, while the diameter of the transition portion of the hub follows the radial increase of the outer cylinder.
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