Appeal 2007-2880
Application 11/098,984
The claimed invention is directed to a miter saw having: 1) a blade
guard movable between an extended position and a retracted position, and 2)
a reaction system to detect a dangerous condition between a user and the
miter saw blade to urge the blade guard into an extended position in the
event of such a dangerous condition.
Claim 1 reproduced below, is further illustrative of the claimed
subject matter.
1. A miter saw comprising:
a base assembly defining a cutting zone;
a circular blade supported by the base assembly;
a motor configured to rotate the blade;
a housing assembly coupled to the base assembly and
configured to at least partially enclose the blade, where the
housing assembly includes a blade guard movable between an
extended position relatively proximal the cutting zone and a
retracted position relatively distal the cutting zone; and
a reaction system configured to detect one or more
dangerous conditions between a person and the blade, and to
urge the blade guard toward the extended position in the event a
dangerous condition is detected.
The references of record relied upon by the Examiner as evidence of
obviousness are:
Dehari US 4,774,866 Oct. 04, 1988
Serban US 5,531,147 Jul. 02, 1996
Mooring US 5,667,152 Sep. 16, 1997
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