Clutch for injury mitigation system for power tools
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United States of America Patent
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Sep 30, 2014
Grant Date -
Aug 21, 2008
app pub date -
Feb 13, 2008
filing date -
Feb 20, 2007
priority date (Note) -
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Abstract
A clutch mechanism includes a bolt threadably received by a drive shaft and configured to secure the blade on an inner washer disposed about the drive shaft. The clutch mechanism also includes a spring assembly that is generally annularly disposed around the bolt. When the spring assembly is compressed, the spring assembly is configured to grip the blade inner washer and the spring assembly. At least one shallow pocket and at least one deep pocket are disposed in a lower surface of an upper retainer, and at least one geometric spacer extends from the spring assembly. In the coupled condition, the geometric spacer is engaged with the shallow pocket, and in the uncoupled condition, the plug structure is engaged with the deep pocket.
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