Abstract: A tool chuck is provided for rotary power tools that includes a dust seal for reducing the quantity of dust and cuttings entering the chuck mechanism. The tool chuck features an endcap affixed to the chuck body and a circular brush may be either permanently or removably engaged to the endcap. The circular brush comprises a multiplicity of either metallic or plastic bristles that contact the shank of a tool bit engaged in the tool chuck.

Abstract: A non-impact keyless chuck suitable for use with manual or powered drivers is disclosed. The chuck comprises a body which carries a rotatable split nut having a relatively fine thread and a plurality of slidable jaws, which may be identical, driven by the rotatable nut. An anti-friction bearing is disposed between the rotatable nut and a bearing thrust ring mounted on the body. A clutch or torque limiting mechanism is provided to limit the tightening torque to a predetermined value while the loosening torque may be limited or unlimited. The front sleeve, and rear sleeve, if used, may be formed from a structural plastic to reduce manufacturing costs. A relatively soft elastomeric grip boot may be placed on the front sleeve to improve the grip and temporarily restrain and center the tool during chuck tightening or loosening operations. A relatively soft elastomeric grip boot may also be placed on the rear sleeve, if used.

Abstract: An adaptor for attaching a bit to a rotary hammer drill and for attenuating the hammering force from the drill to the bit. The adaptor comprises a tubular body for engagement with the shank of a drill bit, the body having a closed rear end. Means is provided within the body at the closed end for engagement with the rear end of the shank of the drill bit to attenuate the hammering force.

Abstract: A method for inertia welding axially symmetric articles while controlling the gripping force applied to the rotating component is described. A spacer inserted into the rotating headstock creates an alternative path for the axial force in excess of that required for causing gripping of the rotating component, and thus minimizes distortion of the inertia welded article. This is particularly useful in welding high strength superalloy articles, where extremely high axial forces are required to produce an adequate weld joint.

Abstract: Chucks for glass tubes should be designed so that, on the one hand, they grasp the glass tube gently so that the tube is not destroyed, and, on the other hand, so that they hold it securely enough so that a proper processing of the glass tube is possible. This causes a degree of technical complexity which enlarges the dimensions of the chuck and leads to a narrow diameter range for the clampable glass tubes. For other diameter ranges, the chucks have to be changed. The chuck according to the invention has a wide diameter range with small outside dimensions. The chuck has clamping jaws which can be moved radially with respect to its longitudinal axis and has a distance from the longitudinal axis determined by a pressure sleeve, which is connected to the clamping jaws by a forced guidance device. The forced guidance forms an angle of 30.degree. to 60.degree., and preferably 45.degree., with respect to the longitudinal axis. The chuck is used to hold glass tubes in a machine for producing vials.

Abstract: A tool chuck has a plurality of inclined chuck claws mounted centrally of a forward end of a chuck body to be slidable toward and away from one another, a nut ring meshed with the chuck claws and rotatable to screw-feed the chuck claws toward and away from one another, and a torque amplifying mechanism interposed between the nut ring and a control ring fitted to an outer peripheral surface of the chuck body, whereby the control ring is turned directly by hand to cause the chuck claws to hold a tool. A torque limiter is incorporated into the torque amplifying mechanism for allowing the tool to be clamped by a force not exceeding a predetermined value. Excessive tightening of the tool is thereby avoided so that the tool is removable when desired, and at the same time the above torque limiter is formed compact.

Abstract: An arbor or chuck assembly for holding a workpiece or tool includes an arbor or chuck body having a linear body portion and an or contraction portion with inclined faces, a collet positioned radially between the arbor or chuck body and the workpiece or tool for reciprocal movement along a machine axis and having a linear body portion and an expansion/contraction portion with inclined faces in sliding contact with those of the arbor or chuck body, and a ball bushing provided between the linear surfaces of the collet and arbor or chuck body with a slight interference fit, in order to provide zero clearance and substantially frictionless movement therebetween. Expansion and release of the arbor or chuck is controlled by a compression spring biasing the collet in the expansion direction, and a drawbar for pushing the collet against the spring force in the release direction. The collet may have rubber seals for sealing its slots and expansion apertures from contaminants.

Abstract: A keyless tool chuck sleeve is provided for rotary tools which features an elastomeric cover integrally molded to the chuck sleeve to improve the operator's grip during opening and closing of the chuck. The chuck sleeve of the present invention further provides for an abrasion resistant nose, and bit centering and dust guard capabilities.