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US 7,316,404 B1Granted
Drill/driver chuck
AssigneeBlack & Decker Inc.
InventorAndrew Walker
Life of this patent
Estimating the term…
Abstract
A drill/driver chuck has a cylindrical member (2) with a central axial bore (4). A plurality of further bores (6) slanted with respect to the axis of the cylindrical member (4). A jaw actuator (10) is coupled to each jaw (8) and moves them within their respective bores (6). The jaw actuator (10) has a conical shape with the walls of the cone having a plurality of slots (12) formed therein to co-operate with each respective jaw (8).
Claims15
A drill/driver chuck including:
- cylindrical member having a central axis bore and a plurality of further bores such that the plurality of further bores are slanted with respect to the axis of the cylindrical member;
- a plurality of jaws, each jaw being associated with a respective one of the further bores and moveable therewith;
- a conical jaw actuator, coupled to each of the jaws of the plurality, for moving the jaws within their respective further bores, the jaw actuator having a conical shape with walls of the cone having a plurality of slots formed therein such that each slot co-operates with a respective one of the plurality of jaws and wherein movement of the conical jaw actuator is non-rotational in a direction along the axis of the cylindrical member which causes concomitant movement of the jaws within their respective slots in a radial direction with respect to the axis of the cylindrical member;
- and
- an activation element, said activation element non-rotatably movable along the longitudinal axis for applying movement force to said conical jaw actuator so that no rotational movement occurs in said activation element relative to said cylindrical member, plurality of jaws and conical jaw actuator during transitional movement of said plurality of jaws along the axis.
2 more elements
A chuck including:
- a cylindrical member having a central axial bore formed along a longitudinal axis of the cylindrical member and a plurality of further bores such that the plurality of further bores are slanted with respect to the longitudinal axis of the cylindrical member;
- a plurality of jaws, each jaw being associated with a respective one of the further bores and moveable therewithin;
- a conical jaw actuator, coupled to each of the jaws of the plurality, for moving the jaws within their respective further bores, the jaw actuator having a conical shape with walls of the cone having a plurality of slots formed therein such that each slot co-operates with a respective one of the plurality of jaws and wherein movement of the jaw actuator in a direction along the axis of the cylindrical member causes concomitant movement of the jaws within their respective slots in a radial direction with respect to the axis of the cylindrical member;
- and
- a thrust plate coupled to the jaw actuator, the thrust plate non-rotatably movable on the cylindrical member along the longitudinal axis in order to apply movement force to the jaw actuator, said thrust plate constrained against rotational movement about the longitudinal axis so that said thrust plate does not rotate relative to said cylindrical member during said movement.
2 more elements
Dependencies are inferred from the claim text.