Enhanced security catch assembly for retaining a handle on a spindle
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United States of America Patent
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-
Jun 21, 2005
Grant Date -
Apr 15, 2004
app pub date -
Oct 15, 2002
filing date -
Oct 15, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A catch assembly that locks a handle onto the spindle of a lock mechanism has enhanced resistance to attempts to remove the handle by forcibly driving the catch assembly inwards. The catch assembly includes a base mounted on the spindle having a threaded opening that receives a corresponding threaded retaining pin. The pin is moved axially by rotating it. When the pin is rotated to an outward position it engages the handle and the threads act to prevent the pin from being forcibly driven inward by transferring axially applied forces to the base. In the preferred design, the head of the retaining pin is softened and specially shaped to limit the torque that can be applied.
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