Class / Patent application number | Description | Number of patent applications / Date published |
081441000 | Inserted portion cuts into or deforms cavity | 9 |
20090056511 | TOOL HEAD STRUCTURE - A tool head structure is used to screw a regular screw or a damaged screw and comprises two cutting portions located at the center of the front portion thereof. Between the two cutting portions is formed a ridge line, and behind the two cutting portions are formed two concave flank portions, and the respective flank portions are correspondingly linked up with scraping grooves. By such arrangements, the tool head structure can solve the problems of easy slipping and being unable to remove the damaged screw. | 03-05-2009 |
20090100973 | Device to extract broken fasteners embedded in a workpiece | 04-23-2009 |
20090211411 | TOOL FOR REMOVING AND APPLYING A FASTENING DEVICE - A tool for removing and applying a fastening device from and to a threaded stud is provided. The tool includes an elongated chamber and a retainer having a pair of spaced apart portions configured to hold fastening devices within the chamber. The tool further includes a positioning mechanism for positioning stored fastening devices for later installation onto the stud. In one embodiment, the retainer includes a worm gear. Opposing portions of the catch of the worm gear hold the fastening device. The positioning mechanism includes a cam assembly configured to rotate the shaft wherein the rotary movement of the shaft is translated into an axial movement of the fastening device within the chamber. In a second preferred embodiment, the retainer includes a pair of keepers configured to hold a fastening device. The positioning mechanism is operable to feed a fastening device into the keeper. | 08-27-2009 |
20130327188 | SLIP-RESISTANT SCREWDRIVER FOR SLOTTED SCREWS AND METHOD FOR DRIVING SLOTTED SCREWS - A screwdriver blade and method for driving a conventional screw having a single transverse slot is disclosed. The driver blade has an elongated body having a central longitudinal axis and a tip. The tip has a distal end in the form of a planar end face that is arranged to engage the bottom surface of the screw's slot. The end face includes a sharply tapered symmetrical spike projecting outward from it along an axis parallel to the central longitudinal axis of the blade. The spike is arranged to dig into the material of the screw at the bottom surface of the screw's slot to prevent slippage of the tip within the slot and without marring the appearance of the slot. | 12-12-2013 |
20140216214 | REMOVAL TOOL - A removal tool includes an elongate rod. A first end of the elongate rod is to be connected to and driven by a drive device, and a second end of the elongate rod is connected integrally to the first end. A direction from the first end toward the second end, which is substantially parallel to a longitudinal center axis of the elongate rod, is defined as a first direction. Along the first direction the second end is conically tapered and formed with plural splines which obliquely extend relative to the longitudinal center axis according a twist direction, wherein the twist direction generally conforms to a direction in which the removal tool is used to unfasten a fastener. Each spline has a circumferential surface having plural first teeth which obliquely extend relative to the longitudinal center axis according to the twist direction along the first direction. | 08-07-2014 |
20150314429 | Anti-slip Fastener Remover - A fastener extractor that utilizes a plurality of engagement features to prevent slippage and facilitate torque transfer to the fastener. The fastener extractor includes a torque-tool body and a plurality of engagement features. The torque-tool body is the physical structure used to apply the corresponding force by the plurality of engagement features. Each engagement feature includes a flank line, a transversal line, and a basin line. The flank and the transversal line make up the portion of the feature which directly engages the lateral surfaces of the fastener. The basin line and the transversal line are used to create a complimentary shape tailored to the fastener's design to facilitate a proper fit over or into the fastener. | 11-05-2015 |
20150336251 | FASTENER REMOVAL SOCKET - A tool, such as, a socket, that is adapted to remove a stripped or otherwise difficult to remove fastener. The socket includes a body having first and second ends, a first axial bore in the first end adapted to receive the stripped or cylindrical fastener head, and one or more cutting channels in the body between the first and second ends forming internal cutting edges adapted to engage the stripped or cylindrical fastener head. The one or more cutting apertures may have an elongated diamond-like shape and extend a portion of the way around the body and toward the second end. | 11-26-2015 |
20160082579 | BIT FOR REMOVING DAMAGED SCREWS - A bit for removing damaged screws includes: a shaft portion and a head portion connected to the shaft portion. The head portion includes a tip section, a threaded conical section, and scraping portions extending continuously from the tip section to the threaded conical section. The scraping portions are able to perform continuous and non-stopping scraping operation toward the damaged screw. The scraping portions on the threaded conical section can scrape out a space big enough to allow passage of the threaded conical section, thus reducing resistance when the threaded conical section performs scraping and cutting operation. The threaded conical section can be guided to bite into and unscrew out the damaged screw, right after the scraping operation is performed by the tip section, so that the scraping and unscrewing operation can be performed more smoothly. | 03-24-2016 |
20160186915 | Spigot Stop Removal Bit Device - A spigot stop removal bit device facilitates removal of a buried spigot stop without having to dig. The device includes a first bit and a second bit each having a respective first end configured for coupling to a driving tool to be selectively rotated by the driving tool. A second end of the first bit is flat. A second end of the second bit is sharpened wherein the second end of the second bit is configured for engaging and cutting into the plug wherein the plug is structurally compromised to facilitate removal of remnants of the plug from the hydrant pipe. Respective lengths of the first bit and the second bit are extended such that the second end of each is configured for engaging a plug positioned in a hydrant pipe. | 06-30-2016 |