Patent ID: 9550237
Date: 2017-01-24
CPC Classifications: B23B,B23Q,B25B,Y10T

Claim:
1. A chuck for use with a drill bit wherein the chuck comprises: a body; a drill bit centering arrangement; a drill bit retention arrangement; and wherein the drill bit comprises: a drill bit body having at a first end a cutting face associated with a drilling portion of the drill bit body; and at a second end having at least one of the following in any order: wherein the chuck's drill bit centering arrangement accommodates the constant diameter centering shaft portion of the drill bit, wherein the drill bit is aligned with the axis of rotation of the chuck to minimize run-out; and wherein the drill bit retention arrangement is adapted to engage with the lock portion of the drill bit preventing relative longitudinal movement between the drill bit and the body of the chuck; and wherein the chuck further comprises: a drill bit release mechanism associated with the drill bit retention arrangement operable to disengage the drill bit from the drill bit retention arrangement when a force is applied inwards of the body by a user of the chuck and drill bit, to allow the drill bit to be removed longitudinally from the chuck.