Retractile-blade utility knife
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United States of America Patent
Stats
-
May 27, 2014
Grant Date -
Feb 17, 2011
app pub date -
Oct 21, 2010
filing date -
Apr 17, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A knife has a housing, an operating part shiftable on the housing between advanced and retracted positions, and a blade holder connected to the part and carrying a blade. The holder is shiftable on the part between offset first and second cutting positions with the blade projecting from the front end and a safety position with the blade recessed in the housing rearward of the front end. A spring biases the holder into the safety position. A brace element can shift between a position braced between the blade holder and the housing in the first cutting position and a position out of engagement with the blade holder or the housing in the second cutting position. The brace element when engaged holds the blade in the first cutting position but in the second cutting position is disengaged so the spring returns the holder to the safety position.
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