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1805 results about "Tool holder" patented technology

Rotary hammer

A tool holder attachable to a spindle of a hammer and which can receive a bit, the bit having a shank with at least one retaining groove extending along part of the shank, the retaining groove having a defined length, a front end and a rear end that limit axial movement of the bit in the tool holder, which tool holder comprises a hollow cylinder having an axis, an axial bore, a rear end that can be attached to the spindle of the hammer, and a front end that can receive the shank of the bit so that the bit is slidable within the cylinder in an axial direction, at least one retaining element that is located so that it can extend radially into the bore of the cylinder and into the at least one retaining groove of the bit so that the retaining element can be hit by the rear end of the retaining groove during the transition to idling and limit the extent of axial movement of the bit within the cylinder, at least one radial restraining element limiting movement of the retaining element in the radial direction, at least one axial restraining block limiting movement of the retaining element in the axial direction, when hit by the retaining element the axial restraining block movable to a limited extent in the axial direction with respect to the radial restraining element, and a resilient element located forward of the axial restraining block and arranged so as to attenuate the impact transmitted through the axial restraining block from the retaining element.
Owner:BLACK & DECKER INC

Apparatus and method for friction stir welding using a consumable pin tool

The present invention provides a friction stir welding apparatus operable for welding one or more metals, metal alloys, or other materials. The friction stir welding apparatus includes a pin tool holder, a shoulder having a surface coupled to the pin tool holder, and a pin tool coupled to the pin tool holder, the pin tool at least partially protruding from the surface of the shoulder, wherein the pin tool is made of a consumable pin tool material. Optionally, the shoulder rotates at a predetermined rotational speed and is retractable into/extendable from the pin tool holder at a substantially constant rate. Optionally, the shoulder is also made of a consumable shoulder material that is at least partially incorporated into the volume of a joint to be welded. The consumable shoulder material comprises a material that is the same as, similar to, or dissimilar from one or more materials comprising a workpiece to be friction stir welded. Preferably, the pin tool rotates at a predetermined rotational speed and is retractable into/extendable from the surface of the shoulder at a substantially constant rate. The consumable pin tool material is at least partially incorporated into the volume of the joint to be welded. The consumable pin tool material comprises a material that is the same as, similar to, or dissimilar from one or more materials comprising the workpiece to be friction stir welded.
Owner:GENERAL ELECTRIC CO

Tool handle for holding multiple tools of different sizes during use

A generally cylindrical shaped tool handle holds multiple sizes of tools. The handle includes one or more holding slots each positioned on one of multiple outer surface faces into which tools are inserted and held. Each holding slot includes one or more contoured compartments in which tools rest when engaged with the handle. Each contoured compartment is of a size and dimension which corresponds to one or more tool sizes. In the preferred embodiment of the tool handle, three of its outer surface faces have a continuous holding slot with multiple receiving holes for inserting therein hexagonal wrenches of multiple sizes. The continuous holding slots of the preferred embodiment of the handle include multiple contoured compartments for holding an inserted hexagonal wrench. Each contoured compartment is formed about a corresponding receiving hole. A lock is positioned over the contoured compartment to irremovably confine the short leg of the hexagonal wrench within the contoured compartment. Hexagonal shaped tools other than wrenches may be used with the handle of the present invention such as screwdrivers and socket wrenches. A tool holder of the present invention is designed to slide over the handle and to hold multiple sizes of tools which may be used with the handle. The tool holder includes a tool holding member having a plurality of cavities for inserting therein appropriately sized tools and a tool handle holding member having a cavity with an inner hollow shape corresponding to a shape of the handle.
Owner:WAGIC
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