Patent ID: 6814527
Filing Date: 2004-11-09
Classification: B23B,B23Q,Y10T

Abstract:
A debris collecting apparatus for use with a power tool having a rotatable drive shaft extending outwardly therefrom to collect debris resulting from a cutting of an opening in a ceiling, said apparatus comprising:A) a basket, having an open upper end, and sized to receive debris from cutting of an opening in ceiling a ceiling when the open upper end engages the ceiling; B) a lower opening in said basket to receive said rotatable drive shaft and allow its rotation independently of said basket; C) coupling means provided for mounting on the upper end of said drive shaft and permitting attachment of a cutting blade thereto; and position compensating means which allows the cutting blade to extend upwardly into the ceiling during a cutting operation and which permits axial shifting movement of the basket relative to the drive shaft and cutting blade so that the basket remains in contact with the ceiling during said cutting operation, the position compensating mechanism having an outer housing and spring means in said housing which biases the basket upwardly with respect to the cutting blade but allows said basket to be pushed downwardly relative to the cutting blade as the cutting blade cuts upwardly into a ceiling, the position compensating mechanism further having a pair of bearing means associated with said position compensating mechanism which allows said shaft to extend rotatably through said position compensation mechanism outer housing allowing the housing to remain in a non-rotating condition with respect to the basket, said bearing mechanism includes one bearing means located adjacent one end of said housing in said housing, another bearing means is located adjacent on an opposite end of said housing, and flange plates, each flange plate located adjacent position to one of said bearing means for holding said spring means in a fixed position in said housing.