Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 13, 2008
Patent Application Number
11747655
Date Filed
May 11, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A hand held orbital sander has a housing having an electronically commutated motor disposed therein and an orbit mechanism disposed beneath the housing. A motor controller is coupled to the motor. The motor controller changes the speed of at which it runs the motor from an idle speed to a sanding speed upon the motor speed dropping from idle speed to an idle speed threshold value and changes the speed at which it runs the motor from sanding speed to idle speed upon the motor speed increasing from sanding speed to a sanding speed threshold value. The sander may have a mechanical brake that brakes the orbit mechanism and the motor controller also dynamically brakes the motor.
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