Cylinder locking device
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United States of America Patent
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Mar 28, 2017
Grant Date -
Oct 27, 2016
app pub date -
Nov 12, 2014
filing date -
Dec 13, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A cylinder locking device is provided in which an inner cylinder is pivotably inserted into a cylinder body, a protector is disposed opposite a rear end of the inner cylinder along an insertion direction of a mechanical key, the protector enabling the mechanical key to be inserted toward the inner cylinder, and a coil-shaped spring is provided between the protector and the inner cylinder or the cylinder body, wherein the spring is formed so as to have a coil portion that extends in the axial direction of the inner cylinder and a bent portion that is bent from at least one end part of the coil portion toward an interior of the coil portion in a direction along an axis of the inner cylinder. This enables deformation of a coil-shaped spring to be prevented.
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