Patent ID: 6401346
Filing Date: 2002-06-11
Classification: B23D,Y10S

Abstract:
A powered band-type coping saw comprising:a continuous band coping saw blade having a plurality of concave hemispheric indentions spaceably positioned along the entire top portion of one side of said blade; a uni-cast or uni-body housing comprising an ergonomically designed handle portion and a U-shaped frame portion extending laterally from said handle portion with said frame portion having an L-shaped cross-section so as to form a channel along its entire length, said frame portion also having a snap-on frame cover for protection and added safety during coping operations; a pulley system attached to said U-shaped frame for holding and guiding said coping saw blade around and through the channel formed by said frame, said pulley system comprising a plurality of guide pulleys and a double-sprocketed drive pulley with said drive pulley comprising a gear drive sprocket and a blade drive sprocket, said blade drive sprocket having a plurality of hemispheric nodules positioned around the circumference of its axle for mechanically engaging the concave indentations along said continuous band coping saw blade; a drive means comprising a shaft-driven gear drive attached to a motor means with said gear drive being rotatably mounted to said motor means at one end of said handle portion of said uni-body housing and adjacent to said U-shaped frame so as to mechanically engage the gear drive sprocket of said double-sprocketed drive pulley; a detachable power means attached at the end of said handle portion of said uni-body housing opposite said drive means for providing power to said motor means; and, ergonomically placed control mechanisms along the handle portion of said uni-body housing for controlling and operating said motor means.