Patent ID: 6457915
Filing Date: 2002-10-01
Classification: B23B,B23Q,Y10T

Abstract:
A ceiling driller comprising:a dust collector having an open end and a closed end opposite to said open end, said closed end provided with a tubular portion having a stepped hole, said closed end having a planar surface facing said open end, said closed end having a plurality of dust collecting slots formed in said planar surface and extending radially outwardly from said tubular portion of said dust collecting slots having a bottom positioned a greater distance from said open end than a distance of said planar surface from said open end; a seat rod having an actuating end and a head end, said actuating end provided with an outer threaded portion, said head end provided with a through hole and a locating hole, said seat rod having an insertion portion located between said actuating end and said head end; a drill bit located in said locating hole of said head end of said seat rod; an adjustment rod having a protrusion at both longitudinal ends thereof, said adjustment rod received in said through hole of said head end of said seat rod; two tool mounting seats mounted on opposite sides of said seat rod on said adjustment rod, each of said two tool mounting seats provided with a slotted surface; two machining tools respectively fastened to said slotted surface of said tool mounting seats; a spring fitted over said actuating end of said seat rod; and a nut engaged with said outer threaded portion of said seat rod.