Cylinder lock with reinforcements to improve structural strength
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United States of America Patent
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May 22, 2012
Grant Date -
Jul 17, 2008
app pub date -
Mar 20, 2008
filing date -
Jan 12, 2007
priority date (Note) -
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Abstract
A cylinder lock includes a shell that has an enlarged tubular section, and a constricted tubular section. A retractor case that contains a latch retractor for retracting a latch is disposed within the enlarged tubular section. An inner surface of the enlarged tubular section is provided with an interlocking unit that interlocks with the retractor case to prevent relative rotational movements of the retractor case and the shell. In an embodiment, the retractor case has at least one tongue extending radially between a pair of annularly spaced apart interlocking elements of the interlocking unit.
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