Mortise latchset with dually biased cam assembly
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United States of America Patent
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Apr 16, 2013
Grant Date -
Jan 19, 2012
app pub date -
Jul 14, 2010
filing date -
Jul 14, 2010
priority date (Note) -
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Abstract
A mortise latchset has an improved leveraged cam assembly, completely internal to the latchset body, versatile enough to allow the door handles to be rotated in either direction to retract the latchbolt, and robust enough to independently bias each of two lever-type door handles toward a handle-centering position, even when one of the handles is being operated. The mortise latchset uses a pair of coaxially mounted cam followers independently leveraged by a cantilevered spring assembly. The cam followers are located between the operating cams and the latch retracting assembly, and each leveraged cam follower is operable to engage the latch retracting assembly to retract the latchbolt, while the other cam follower biases its operating cam in the handle-centering position.
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