91results about "Hand chisels" patented technology

This invention relates to tools for preparing vertebral bodies in the spine for the implantation of an artificial vertebral disk replacement and related method. A first tool is disclosed that prepares the vertebral bodies for implantation by cutting offset channels in the vertebral bodies. The second tool holds two plates of the implant during the implantation process. This invention also relates to an artificial vertebral disk replacement, a method of operation, and a method of implanting.

A high-speed, hand-held attachment for flex rotor shafts of power rotary tools, and also for direct attachment to power rotary tools without flex rotor shafts, that converts rotary motion to reciprocating motion for precision control of cutting, carving, sawing, chiseling, filing, sanding, and engraving on delicate work pieces. The attachment is one assembly comprising a one-piece front one-piece enclosure (20), a rear one-piece enclosure (30), a high-speed bearing (22), a one-piece rotating piece (40) with integral cam groove, a one-piece reciprocating piece (50) with an integral cam follower on one end and with its other, exposed end accomodating the attachment of a chuck or collet and with geometry to prevent rotation, and a thumbscrew (32). Rotating piece (40) attaches directly to the rotary power source and provides the cam action drive to reciprocating piece (50). Bearing (22) provides rotative support for the other end of rotating piece (40). Reciprocating piece (50) slidably mounts in front one-piece enclosure (20). Front one-piece enclosure (20) and rear one-piece enclosure (30) are attached to each other and maintain proper alignment for rotating piece (40), bearing (22), and reciprocating piece (50). Thumbscrew (32) secures the attachment to the flex rotor shaft of a power rotary tool. A tool holder / collet is attached to the exposed end of reciprocating piece (50) whereby numerous types of cutting tools may be utilized. Alternative versions of the rear one-piece enclosure, (30A) and (30B), described herein, allow for attachment directly to power rotary tools without flex rotor shafts. Alternative versions of the reciprocating piece, (50A), (50B), and (50C), and of the rotating piece, (40A), are also described herein.

A tool includes a blade having a working edge and an attachment edge opposite the working edge, a handle with distal and proximal ends and a body having at least one diameter. The proximal end is associated with the attachment edge. A hammer element is associated with the distal end, and a periphery of the hammer element extends in a radial direction greater than the at least one diameter of the body.

A tool includes a tool bit and a handle for releasable engagement with the tool bit. The tool bit includes an insert formed thereon. The handle includes a socket formed thereon. The socket includes a cavity defined therein for receiving the insert and at least one hole communicated with the cavity. The at least one hole includes an internal end and an external end larger than the internal end. The at least one annular groove defined in the insert is aligned with the at least one hole when the insert is inserted in the socket. At least one ball is received in the at least one hole. A sleeve includes an internal face and at least one cam surface formed on the internal face thereof. The sleeve is rotationally mounted on the socket between a first position and a second position. In the first position, the at least one cam surface allows complete removal of the at least one ball from the cavity. In the second position, the at least one cam surface pushes the at least one ball into the cavity.

A chisel according to the present technology has a reduced tendency to jam in a substrate. The chisel is on an axis in the striking direction with successively a striking surface, a shank, a spreading element and a tip. The spreading element has multiple ribs around the axis extending along the axis 2. The ribs each have a wave shape formed through a tangential deflection with respect to the axis.

A tool includes a blade with a working end and a handle end opposite the working end, a handle secured to the handle end and having a blade end and a hammer end, a hammer secured to the hammer end and having a body made of a relatively hard, lightweight polymeric material.

The invention is essentially a tool device which is a combination of components, features and functions, including knife, chisel, scrapper, ruler, depth gage, and straight edge, housed in one easily handled and transported unit.

A channel chisel for forming a channel in a work piece, the channel chisel comprising a shaft having a longitudinal axis, a tip at one end of the shaft, wherein the tip has a cutting edge for cutting a work piece and a flute for removal of debris cut from a work piece, and at least one support member protruding from a side of the channel chisel, characterised in that the support member is adapted to abut and slide along a base of a channel to support the channel chisel in use, wherein support provided by the support member permits the channel chisel to pivot about the support member to change the angle at which the cutting edge cuts a work piece.

A multi-impact hand tool comprises a sleeve, a tool head, a movable rod, a spring and an impact block. With only one impact operation, the multi-impact hand tool can provide a multi-impact effect, thus improving the working efficiency. In addition, the impact force can be directly transferred to the tool head for performing the chiseling operation, thus improving the working efficiency.

A tool includes a handle, a controller and a bit. The handle includes a socket defining an axial non-circular space and a radial space in communication with the axial space. The controller includes a space defined therein and a ridge formed on the wall of the space thereof. The controller is movable in the radial space of socket between a locking position and a releasing position. The bit includes a working tip and a shank defining at least one recess for receiving the ridge when the shank is inserted into the space of the controller through the axial space of the socket, thus locking the bit to the handle.

A de-icicling tool has an icicle removing head mounted onto the distal end of an elongated handle. The head is formed of a generally flat blade and a mounting sleeve to that fits onto the distal end of the handle. The blade member has a series of triangular teeth in a concave arc along the front with each tooth having a point and beveled edges which meet at the associated point. The points of the teeth are rounded. The blade has at least one generally triangular notch formed along its rear thereof, each notch having a pair of beveled edges. There is one or more one round aperture in the blade, each with a beveled edge and with a diameter of three to five centimeters. The mounting sleeve includes a threaded socket adapted to accept a male thread of a standard broom handle or paint pole.

The present invention discloses a handle of a hand tool, which comprises a handle body and grinding members. The grinding member is mounted on the handle body, and the grinding member contains abrasive particles and has at least a grinding face, so that the user can grind the sharp edge of articles straightly by grinding member possessed by the handle. Also the user can easily replace a new grinding member when the old one is out of use. Furthermore, the abrasive particles of grinding members have average diameter being different from each other so as to grind the article to have different fine degrees.

A tool includes a shank having an engaging hole for receiving one end of a tool member and having a number of orifices for receiving detents, a control ferrule rotatably engaged onto the shank and having a number of notches each of which includes a deeper portion for selectively receiving the detents and for disengaging the detents from the tool member and a shallower portion for selectively forcing and actuating the detents to engage with the tool member and to detachably couple the tool member to the shank, and a spring member may actuate the shallower portions of the notches of the control ferrule to engage with the detents and then to detachably couple the tool member to the shank.