Drill chuck tool bit locator
AssigneeBlack & Decker Inc.
InventorLouis A Gibbons
Life of this patent
Estimating the term…
Abstract
A drill chuck having an adjustable depth stop to control an amount by which a tool bit, such as a drill or a screwdriver bit, is inserted into the drill chuck. The adjustable depth stop can include a spring, such as a conical spring, that can be coupled to a spindle of the chuck.
Claims24
A chuck having a chuck spindle supporting a plurality of jaws that are adapted to engage a shank of a drill, the chuck further having a chuck attachment screw with a head, the chuck attachment screw being adapted for coupling the chuck spindle to a rotary spindle of a power tool, the improvement comprising a resilient member coupled to the chuck attachment screw, the resilient member extending forwardly of the head and terminating at a point rearwardly of a front end of the jaws, the resilient member being operable for biasing a drill bit inserted into the chuck in a direction outwardly away from the chuck spindle.
An apparatus comprising a drill driver with an output spindle and a chuck, the chuck including a chuck spindle, a plurality of jaws, a screw and a resilient member, the screw being employed to removably couple the chuck spindle to the output spindle, the jaws being supported on the chuck spindle and being adapted to engage a shank of a drill, the resilient member being coupled to a head of the screw at a first end, the resilient member extending forwardly of the head of the screw and terminating at a free second end rearwardly of a front end of the jaws, the free second end being deflectable relative to the chuck spindle.
A chuck having a chuck spindle supporting a plurality of jaws that are adapted to engage a shank of a drill, the improvement comprising a resilient member coupled to the chuck spindle and located rearwardly of a front end of the jaws, the resilient member being operable for biasing a drill bit inserted into the chuck in a direction outwardly away from the chuck spindle, wherein the resilient member is a spring, wherein the spring includes a radially inwardly extending tab that couples the spring to the chuck spindle and wherein the chuck further includes a chuck attachment screw that is adapted to removably couple the chuck to an output spindle of a tool, and wherein the tab is disposed within a groove that is formed in a head of the chuck attachment screw.
An apparatus comprising a drill driver with an output spindle and a chuck, the chuck including a chuck spindle, a plurality of jaws, and a resilient member, the chuck spindle being removably coupled to the output spindle, the jaws being supported on the chuck spindle and being adapted to engage a shank of a drill, the resilient member being coupled to the chuck spindle and located rearwardly of a front end of the jaws, the resilient member having a first end, which is coupled to the chuck spindle, and a free second end which is deflectable relative to the chuck spindle, wherein the resilient member is a spring, wherein the spring includes a radially inwardly extending tab that couples the spring to the chuck spindle and wherein the chuck further includes a chuck attachment screw that is adapted to removably couple the chuck to an output spindle of a tool, and wherein the tab is disposed within a groove that is formed in a head of the chuck attachment screw.
Dependencies are inferred from the claim text.