Patent ID: 11878355
Assignee: BLACK & DECKER, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 0:
1. A chuck for a power tool comprising:
a body extending along a longitudinal axis and having a nose portion and a tail portion,
a central bore defined in the body and open to the nose portion, the central bore extending along the longitudinal axis and configured to receive a tool bit;
a plurality of angled passageways defined in the body in communication with the central bore, with each passageway disposed at an angle to the longitudinal axis;
a plurality of jaws, each jaw at least partially received in one of the passageways, at least one of the jaws having a rear end lying in a first plane transverse to the longitudinal axis, the jaws moveable in the passageways between an axially forward and radially inward clamping position to clamp the tool bit received in the central bore, and an axially rearward and radially outward retracted position;
a rear central bore defined in the body; and
a first key drive member coupled to the tail portion of the body and configured to be engaged by a second key drive member on an output shaft of the power tool to non-rotationally couple the body to the output shaft, where the first key drive member extends axially from a rearward end to a forward end that lies in a second plane transverse to the longitudinal axis,
wherein the second plane is axially forward of the first plane when the jaws are in the retracted position, and
wherein the passageways are angularly spaced about the longitudinal axis and the first key drive member is angularly spaced about the longitudinal axis from each of the passageways.