Patent ID: 6089798
Filing Date: 2000-07-18
Classification: B25D,Y10T

Abstract:
A device on hand-held tool-driving machines for coupling a pounding and drilling tool, comprising at least approximately uniformly distributed at least three couplings and one axial locking feature on a circumference of a tool shank and of a tool holder, said axial locking feature including a depression in said tool shank that runs axially and is closed at least toward a shank end, and a radially movable locking body with which said depression interacts and which projects inward from a seating hole of said tool holder, said couplings on said tool shank being shaped as recesses running axially to said shank end and also as projections on the circumference of said tool holder running axially and interacting with said recesses, two of said couplings being at least partially opposite to one another, said couplings being located one behind the other on the tool shank circumference starting from said axial locking feature and having coupling flanks lined on a circumferential angle greater than 180.degree. and smaller than 240.degree..