Keyless chucking device
OwnerSidney D. Moore, Kenneth T. Stumpinventors
Life of this patent
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Abstract
A keyless chucking device for use with existing and specially-designed chucks mounted on rotary power tools to cause the chuck's jaws to grip or release auxiliary tools such as drill bits. The device is especially suited for use with variable speed, reversible, electric drills and promotes speed and efficiency in tool chucking operations. In a preferrred embodiment, the device may alternatively, at the discretion of the operator, be attached to, or removed from, the chuck of the power tool during its use in operations commonly encountered in the practice of the art.
Claims11
A selectively removable apparatus for use with a gear tightening chuck of a rotary power tool including jaws and outer sleeve to assist said chuck in gripping and releasing auxiliary tools selectably carried in the jaws of said chuck whenever the chuck includes jaws and an outer sleeve rotatable to open and close the jaw, comprising:
- a body including an outer grippable surface;
- an opening defined in said body sized for slidably receiving the outer sleeve portion of said chuck whereby said body covers at least the gear portion of the chuck;
- and
- dog means on said body and within said opening and extending rearward toward said outer sleeve for engaging the outer sleeve of the chuck to cause rotational dependence between the outer sleeve and said body of said apparatus to prevent rotation of the outer cylindrical sleeve when said apparatus is held in engagement upon the chuck by an operator and power is applied to the power tool to cause rotation of the remaining portions of the chuck whereby actuation of its jaws is effected to grip or release said auxiliary tools carried thereby, depending upon the direction of rotation of the chuck.
A selectively removable apparatus for use with the chuck of a rotary power tool including jaws and an outer sleeve to assist said chuck in gripping and releasing auxiliary tools selectably carried in the jaws of said chuck whenever the chuck includes jaws and an outer sleeve rotatable to open and close the jaw, comprising:
- a body;
- a first bore defined in said body for receiving therein said outer sleeve of the chuck, said bore extending for a substantial length of said body to allow said body to pass over said outer sleeve to install or remove said body from the chuck;
- a second bore defined in said body on the axis of said first bore and communicating with said first bore and extending for the remaining length of said body for receiving a jawcarrying member of the chuck, said first and second bores defining a bore extending through said body and shaped to conform with the geometry of the chuck for slidably receiving the chuck within said stepped bore;
- a step on said body between said first and second bores;
- and
- means on said step for engaging said outer sleeve of the chuck to effect rotational dependence between the outer sleeve and said body to prevent rotation of the outer sleeve when said apparatus is held in engagement by an operator upon the chuck and power is applied to said power tool to cause rotation of the remaining portions of the chuck whereby actuation of the jaws is effected to grip or release said auxiliary tools carried thereby depending upon the direction of rotation of the chuck.
Dependencies are inferred from the claim text.