System and method for adjusting the spring torque of a lock chassis
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United States of America Patent
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Dec 15, 2015
Grant Date -
Sep 12, 2013
app pub date -
Mar 8, 2012
filing date -
Mar 8, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A latch assembly configured to attach to a door includes one of a knob and a lever. The latch assembly further includes a latch extending from the door. A spindle is rotatable from a first position to a second position to move the latch from an extended position to a retracted position. A first biasing member is selectively operable to bias the spindle toward the first position. A second biasing member is selectively operable to bias the spindle toward the first position. An actuator is movable between a knob position in which only one of the first biasing member and the second biasing member biases the spindle toward the first position and a lever position in which both the first biasing member and the second biasing member cooperate to bias the spindle toward the first position.
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