Abstract: A hammer drill adapter for driving a drive cleat to join opposed ends of a duct comprising: a first portion generally aligned in a plane; a shaft portion having an elongate axis generally parallel to said plane; the first portion fixed to the shaft portion; an entry surface at a distal end of the first portion; a capture cavity extending through the entry surface; the capture cavity defined proximally by a rear surface and by an opposed lower and upper capture surfaces; the capture cavity also laterally defined by an opposed first capture surface and a second capture surface; the capture cavity sized to house a trailing end portion of a drive cleat; and wherein the shaft portion comprises a connection portion at a proximal end of said shaft portion for fixation within a hammer drill chuck. Also disclosed are methods for use to advance a drive cleat.

Abstract: Devices for the fixation of a bone fracture and methods of using the devices are provided. The devices comprise at least one distal pin assembly configured to engage a first bone fragment, at least one proximal pin assembly configured to engage a second bone fragment, and a rail bar system configured to connect the distal and proximal pin assemblies together across the bone fracture. Each pin assembly includes a screw portion having a distal end configured to engage first bone fragment and a proximal end, a support sheath portion having a distal end configured to engage the first bone fragment, wherein the support sheath portion defines an elongated channel in which the proximal end of the screw portion is disposed, and a cap portion configured to attach the proximal end of the screw portion to the support sheath portion.

Abstract: Apparatus and methods for spinal surgery include a retractor with an elongated body extending along a longitudinal axis between a distal end and an opposite proximal end. The retractor defines a passage between the distal and proximal ends and a window opening into the passage adjacent to the distal end. The apparatus also includes a guide member extending laterally from the proximal end of the retractor and the guide member includes a body extending along an arc. The body defines a number of trajectories each intersecting the window of the retractor. The apparatus further includes an instrument removably mounted to the guide member and the instrument is movable along the guide member and securable to the guide member in any one of the number of trajectories so that the instrument can be moved along the selected trajectory through the window.

Abstract: A chuck device for holding an unmodified, circumferentially round tool shaft or collet includes an annular head portion having a distal end surface, a laterally spaced coupling end section, an outer circumferential surface, and a central longitudinally extending bore with an inner circumferential bore surface to slidingly receive the tool shaft or collet with the tool axis aligned collinearly with the bore axis. The head portion includes a first slot extending inwardly on one side of the annular head and normal to the distal end surface, and a second slot extending from the outer circumferential surface normal to and intersecting the first slot to form stationary and pivotable segments having a bore-facing, tool grasping surface that radially directs a compressive grasping force in an amount sufficient to hold the tool with a slip-torque of up to about 430 inch-lbs. at a rotational speed of up to at least about 20,000 rpm.

Abstract: A combination of a chucking device and a drill and a chucking device for a drill with cutting tips on both ends. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: In a tool attachment, for fastening to an handheld machine tool equipped with a tool holding fixture, having an output shaft and a base body, which forms an inner cavity and on whose outer circumference an axially displaceable locking sleeve is situated, for releasing at least one associated locking element against a spring force of a spring element, which has a clamping ring, in the inner cavity, a anti-rotation locking unit is configured for the rotationally locked fastening of the base body to a fastening unit associated with the handheld machine tool, the anti-rotation locking unit and the fastening unit having complementary geometric forms, which are configured to engage with each other for the detachable rotationally locked fastening of the base body on the fastening unit; and the at least one associated locking element being situated in the vicinity of the anti-rotation locking unit.

Abstract: An improved quick change power tool chuck is provided which is principally used on a wood working router but could also be used in many other power tool applications. Key features of the quick change chuck include the unique way that it secures the cutting bit from unwanted slippage, the large mechanical advantage thereof and the speed in which a cutting bit can be removed and replaced. The chuck can be aligned and attached to the power tool in the same manner that a standard collet is aligned and attached to the router spindle or to a router or other drive shaft in a number of different ways.

Abstract: The tool holder for machine tools with fixed tools has a cylindrical shank for connection to the carriage or turret of the machine tool and a receiving bore for a tool. It comprises a base holder having the cylindrical shank and a collet chuck holder separate from the base holder and connectable to it with an exact fit and having a receiving bore for a collet chuck.

Abstract: An improved quick change power tool chuck is provided which is principally used on a wood working router but could also be used in many other power tool applications. Key features of the quick change chuck include the unique way that it secures the cutting bit from unwanted slippage, the large mechanical advantage thereof and the speed in which a cutting bit can be removed and replaced. The chuck can be aligned and attached to the power tool in the same manner that a standard collet is aligned and attached to the router spindle or to a router or other drive shaft in a number of different ways.

Abstract: An improved quick change power tool chuck is provided which is principally used on a wood working router but could also be used in many other power tool applications. The key features of the quick change chuck are the unique way that it secures the cutting bit from unwanted slippage, the large mechanical advantage thereof and the speed in which a cutting bit can be removed and replaced. The chuck can be aligned and attached to the power tool in the same manner that a standard collet is aligned and attached to the router spindle.

Abstract: An improved quick change power tool chuck is provided which is principally used on a wood working router but could also be used in many other power tool applications. The key features of the quick change chuck are the unique way that it secures the cutting bit from unwanted slippage, the large mechanical advantage thereof and the speed in which a cutting bit can be removed and replaced. The chuck can be aligned and attached to the power tool in the same manner that a standard collet is aligned and attached to the router spindle.

Abstract: The present disclosure relates to a jig saw blade clamp including a first clamp member defining a main slot. A second clamp member is positioned within the main slot. The first clamp member is moveable relative to the first clamp member between a first position in which the first and second clamp members are adapted to clamp a blade, and a second position in which the blade can be inserted between the first and second clamp members. A collar is pivotally moveable in first and second opposite directions relative to the first and second clamp members. The collar includes a cam portion that moves the second clamp member toward the first position when the collar is pivoted in the first direction, and also moves the second clamp member toward the second position when the collar is pivoted in the second direction.

Abstract: Collet includes a housing having a wall with external and internal surfaces, having opposing ends, and having an internal hollow portion with at least one opening; and a flap internal of the opposing ends of the housing in the wall and over part of the internal hollow portion of the housing such that, when a suitably firm force is applied from external to the flap, a suitable object such as a rotary tool bit inserted in the internal hollow portion of the housing through the at least one opening can be held securely in place at least partly inside the housing by the flap. The flap may be provided, for example, by two radial slits which may extend into the wall to coincide with the diameter of the housing and which are connected to one axially directed slit. Seal(s), for example, O-ring(s), may be provided between the flap and either end or both ends of the housing and/or internally between the tool shaft and internal collet wall. The collet can be assembled with a collet holder and rotary bit.

Abstract: Improved chucks are provided for securing a cutting element to a power driving unit. The improved chucks are easy to manufacture and do not require mechanical aptitude or great manual dexterity in order to securely connect the cutting element to the power driving unit. These chucks may be used in combination with various power drive units such as power drills, drill presses, routers, lathes and milling machines, rotary sanders and grinders and other rotating cutting elements.

Abstract: In a machine tool, especially a punch, having a vertically movable upper tool carrier (1) with at least two punching tools (2) located next to each other and a lower tool carrier (3) with at least two punch matrixes (4) located next to each other, wherein preferably each punching tool (2) consists of a punch (5), a punch holder (6) and a retaining nut (7) connecting the punch (5) with the punch holder (6), and taking into consideration the cramped space in the upper tool carrier (1), a quick change of a punch (5) or of a punching tool (2) and/or of all punches (5) or punching tools (2) is possible, because the upper tool carrier (1) has a receiver plate (8) with a plurality of punch receivers (9) located next to each other and corresponding to the number of punching tools (2), because the punch receivers (9) are open in the direction of the front face of the upper tool carrier (1) and thereby the upper ends of the punching tools (2) or the punch holders (6) of the punching tools (2) are insertable or can be p

Abstract: A clamp for a tool spindle for rapid interchange of tools without the need to raise the spindle or lower the work further than the end of the tool to allow clearance. The clamp is provided with a recess co-axial with spindle and the tool is provided with an adapter extension movable into the recess in a direction normal to the axis of the spindle or recess. A clamping gate hinged at one side of the recess is then locked to the other side of the recess to complete the recess and lock the tool adapter in position. A locking screw on the gate is then rotated into engagement with a flat on the adapter to integrate the clamping unit and tool. Means are also provided for axial positioning of the tool.

Abstract: Rotary motion is converted to linear motion by multiple thread sets which cooperate to provide precise control of the amount of rotary motion thus converted. As applied to a precision positioning device for a tool, blade or other object, the thread sets are preferably arranged in a serial and/or telescoped configuration. A relatively simple precision hand tool positioning device is realized by having one thread set arranged in a common direction but reduced pitch relative to the other set. The finiteness of the object positioning is further enhanced by moving it with respect to an inclined plane. A retaining device for gripping the element to be moved is directly associated with a shank having the smaller pitched thread set thereon. The shank is prevented from rotating but allowed to move linearly relative to a housing and the threads thereof engage a spindle which has another set of threads for engaging the housing. A calibrated indicator of the shank position in easily readable format is provided.