Class / Patent application number | Description | Number of patent applications / Date published |
411402000 | Head driving structure | 58 |
20090129887 | SCREW KIT - The present invention discloses a screw kit, which comprises: a screw element, a driving element, and an alignment element. The screw element has a screw end and a first coupling portion. The driving element has a driving end and a second coupling portion. The alignment element has a first sleeving section and a second sleeving section, which are respectively engageable with the first coupling portion and the second coupling portion. When the screw element and the driving element are simultaneously engaged with the alignment element, the deviation between the screw element and the driving element is eliminated, and the screw element and the driving element can be easily aligned to an identical axis. Thereby, the assembling and disassembling speeds of the screw element and the driving element are increased without influencing the theft-protection function thereof. | 05-21-2009 |
20090297292 | SCREW FASTENER - This invention provides a bolt having threads that performs anti-loosening function and that maintains a specified thread strength, a bolt that also enables manufacturing costs to be reduced. The thread of the step lock bolt is constructed so to include a play side flank formed having a specified lead angle and a pressure side flank formed into a step like configuration, in which a flat portion whose lead angle is 0 (zero) and an inclined portion whose lead angle is steep alternate continuously. | 12-03-2009 |
20100014940 | Bolt, the axial force of which is to be determined by a supersonic wave, and a method for the manufacturing thereof - The object of the present invention is to provide a bolt, the axial force of which can be measured by a supersonic wave, or the like, with high accuracy and which can be manufactured in a shortened process. | 01-21-2010 |
20100196121 | THREAD FORMING SCREW THREAD AND CORRESPONDING THREAD ROLL DIE - A thread forming screw thread fastener and a corresponding thread roll die are disclosed for fastening into a hole of a workpiece composed of low ductility material. More specifically, the thread forming screw thread has smooth radius thread flank which has a capability of deforming low ductile material such as magnesium, soft aluminum, thermoset plastics and other low ductility materials to deform the ductile material efficiently minimizing cracks, debris, low friction during installation and a maximum engagement of the screw with mating parts with the ductile material. | 08-05-2010 |
20100239386 | SUPPORTING DEVICE - Disclosed herein is a support device for supporting an article on a structure, the support device comprising an elongate body having a support head portion located at one end thereof, the support head portion including a head and a shoulder flange, the head and shoulder flange being separated by a neck, the head and/or neck being arranged to engage the article, the shoulder flange having a surface for engaging a corresponding surface of the structure, the elongate body further comprising an elongate shank portion for anchoring the support device at a target site on the structure. | 09-23-2010 |
20110116895 | ASSEMBLY IMPROVING, LOW MASS, FASTENER HEAD - An assembly improving, lower mass fastener head that is easier to handle and reduces the amount of material that is required in manufacturing the fastener comprises three lugs at multiples of 60 degrees around an axis of a threaded body. Those portions of a hex head that are not necessary for application and transmission of torque, nor necessary to resist axial loading, nor necessary to axially stabilize the fastener head within current driving tooling may be removed. Compatibility with existing hex head tools is maintained while improving handling of the fastener by an assembler and reducing material used in the fastener head. | 05-19-2011 |
20120034048 | SELF-TAPPING THREAD FORMING SCREW AND CORRESPONDING THREAD ROLL DIE - A thread forming screw thread fastener for fastening into a hole formed by the fastener in a work piece, the fastener comprising: a head having a drive to be engaged with a driver bit; and a shank with threads having a symmetrical thread profile with a minor diameter and a major diameter, the major diameter defining a thread crest of the screw thread, and the minor diameter defining the thread root of the screw thread, the profile of the screw thread defined by the surface of the screw thread between adjacent thread crests forming a thread flank, the thread flank having a first central portion of constant radius along the thread root, the radius common at the thread root, at each adjacent thread crests, and at two transition intersection points, the profile of the thread flank having second and third portions defined by surfaces having different radii of curvature between each transition intersection point and each adjacent thread crest. | 02-09-2012 |
20120134765 | NOVEL SCREW HEAD THAT REDUCES OPERATIONAL TORQUE - A screw head that has a centre slot and intrusions positioned in a circular configuration around the center slot of the screw head such that a screw driver bit mates with these intrusions and does not slip out of the screw head centre slot during the screw driving process and does not get released from the screw head due to movement pressure until it is consciously removed from the screw head. This reduces the torque needed to be applied to turn and drive in the screw head. | 05-31-2012 |
20130011215 | SECURITY FASTENER - A security fastener, for use with a corresponding key, having a channel in a head of the security fastener for receiving the key, the bottom of the channel being profiled wherein the depth of the channel varies along the length of the channel; a key for use with a security fastener; a combination, or a kit of parts, comprising a security fastener; a method of manufacturing a security fastener; and a method of processing an order for a security fastener. | 01-10-2013 |
20130017037 | SCREW STRUCTUREAANM CHEN; YUN-LUNGAACI Tu-ChengAACO TWAAGP CHEN; YUN-LUNG Tu-Cheng TWAANM CHAI; CHUNGAACI Tu-ChengAACO TWAAGP CHAI; CHUNG Tu-Cheng TW - A screw structure for securing a first object to a second object comprises a screw member, a blocking member and a pivot member. The screw member comprises a cap and a pole extending from the cap. The blocking member is captive on the pole and defines a latching groove. The pivot member comprises a latching portion elastically engaged in the latching groove and located beneath the cap. The pivot member can be raised up and lowered down, and twisted to activate the screw function. | 01-17-2013 |
20130149071 | PLASTIC POLYMER COVERED FASTENER - Fasteners are provided with a polymer layer covering a body. The polymer layer may improve the aesthetics of the fastener and may be colored to provide various color options. The polymer layer covers at least part of a wrench bearing surface. | 06-13-2013 |
20130189052 | Screw for Composite/Plastic Materials - A screw for composite or plastic material comprises a head having a socket which is rotatably couplable for application of a torque. An elongated shank extends from the head and terminates a tapered threaded distal tip. The shank has one portion having an enlarged diameter and a second portion having a reduced diameter. The first portion is traversed by a left hand thread having a first pitch. The second portion is traversed by a right hand thread having a second pitch which is less than the first pitch. An unthreaded land portion adjacent the tip extends at least twice the second pitch. For some embodiments, some thread segments have notches. The fastener is particularly adapted for very dense material. | 07-25-2013 |
20130259601 | Low Profile Standoff With Tool Stop - A low profile standoff with tool stop is disclosed for attaching surfaces in fixed proximity to each other. The low profile standoff with tool stop includes a main body having a threaded bore, a threaded stem for threading a nut, and an intermediate section of narrower cross section than the main body that admits a portion of the threaded bore. The intermediate section extends within the thickness of the mounting surface while the main body stays on one side and the threaded stem extends wholly through to the opposite side of the surface. Some embodiments further comprise a tool stop on the exterior of the main body. Other embodiments dispense with the threaded stem. The low profile standoff with tool stop is particularly useful for overcoming the strength disadvantages of reduced height standoffs known in the art, and of minimizing tool head damage to the mounting surface. | 10-03-2013 |
20140017034 | FASTENER DEVICE WITHOUT DRIVING TOOL - A fastener device includes a fastener member having a threaded shank, and a head formed on the threaded shank, and an actuating member includes a screw hole formed in a stem for engaging with the threaded shank of the fastener member, and includes a chamber communicative with the screw hole for engaging with the head of the shank and for allowing the fastener member to be selectively rotated by the actuating member, and for allowing the actuating member to be selectively rotated relative to the fastener member. The actuating member includes a housing formed on the stem. A sealing ring is engaged onto the shank for selectively engaging with the head of the shank of the fastener member. | 01-16-2014 |
20140234051 | Assembly Improving, Low Mass, Fastener Head - An assembly improving, lower mass fastener head that is easier to handle and reduces the amount of material that is required in manufacturing the fastener comprises three lugs at multiples of 60 degrees around an axis of a threaded body. Those portions of a hex head that are not necessary for application and transmission of torque, nor necessary to resist axial loading, nor necessary to axially stabilize the fastener head within current driving tooling may be removed. Compatibility with existing hex head tools is maintained while improving handling of the fastener by an assembler and reducing material used in the fastener head. | 08-21-2014 |
20160252125 | LIGHTWEIGHT FASTENER DESIGN | 09-01-2016 |
411403000 | Socket or slot | 34 |
20080279653 | SCREW HEAD FORMATION - A screw having in its head a recess that includes two or three non-circular superimposed recess-tiers. The depth of each recess-tier is less than 1.35 mm and there is less than 1° draw in each recess. The screw head recess is formed using a punch ( | 11-13-2008 |
20090097942 | Deck screw - A fastener for composite material having a dense composition employs a head which has a socket and a recessed underside and a lower rim. The shank has an upper portion with an enlarged diameter and a left hand thread while the lower portion has a tri-lobed configuration and is traversed by a right hand thread. The right hand thread may have a plurality of notches which, in one embodiment, are arranged in a spiral array. | 04-16-2009 |
20090129888 | Slotted set screw - A slotted set screw includes a slot in an upper end surface, and a cut metal waste storing recess respectively formed at two ends of the slot. The cut metal waste storing recess is defined by a vertical wall and a flat bottom wall to have a large opening, separated from the slot for a little distance. The opening of the cut metal waste storing recess communicates with the outside of the threads of the set screw. Thus, cut metal waste may be stored in the cut metal waste storing recesses during cutting threads of the set screw, without falling into and remaining in the slot to result in extra cleaning work for the waste in the slot. | 05-21-2009 |
20090169333 | Screw head - This new screw head consists of a recess resembling a double dove tail design. It is capable of receiving a conventional twist bit. Its primary purposes are to increase safety and expediency. | 07-02-2009 |
20090245971 | COUPLING MEMBER AND PLASMA PROCESSING APPARATUS - A coupling member is employed to couple components of a plasma processing apparatus which processes a substrate by using a plasma. The coupling member includes a threaded rod portion which passes through one component and is screwed and fixed to another component, a head portion which supports the one component and has a diameter larger than that of the threaded rod portion, and an elastic portion which is interposed between the threaded rod portion and the head portion, wherein the elastic portion has a larger strain to an external force than those of the threaded rod portion and the head portion. | 10-01-2009 |
20090285653 | LOBED DRIVE FOR HI-LITE FASTENER - A drive socket for a male threaded fastener includes three rounded lobes of equal radius which are located equidistant from the center of the fastener and 120° apart from each other. The drive socket also includes three flat surfaces, each flat surface being located opposite one of the lobes and equidistant from the center of the fastener. Another embodiment of a drive socket includes a first set of three lobes and a second set of three lobes, each lobe being of equal radius and equidistant from the center of the fastener. The lobes of the first set are 120° apart and the lobes of the second set are also 120° apart and 60° apart from the lobes of the first set. Each of the lobes of the first set includes a flat surface which is adjacent and tangential to the radius portion of the lobe. | 11-19-2009 |
20100104397 | SCREW AND DRIVER BIT - Provided are a screw ( | 04-29-2010 |
20100111641 | SLOTTED SCREW - A slotted screw has slot surfaces ( | 05-06-2010 |
20100143071 | SCREW MEMBER - For certainly handling a screw member, a screw member | 06-10-2010 |
20110318138 | PEG BOARD DISPLAY FASTENER AND CONNECTOR - A clip includes a head having a thumbscrew protrusion and a body with spaced apart threads. The clip is of various widths and lengths to accommodate, most preferably, different widths and depths of holes in peg board. Most preferably, the clip is sized to accommodate ¼ inch peg board, and is used to releasably secure items such as advertisements and promotional material to the peg board. | 12-29-2011 |
20120099944 | SCREW TIGHTENING STRUCTURE, SCREW AND SCREW TIGHTENING TOOL - A screw tightening structure includes an indented concave recess formed on a screw, and mating convex sections provided on a screw tightening tool for tightening the screw: the recess and the mating convex sections including three or more torque transfer portions, respectively, which protrude outward and are disposed at equiangular intervals for concentrically mating engagements; rotating the screw tightening tool causing the torque transfer portions of the mating convex sections to transfer a tightening torque to the screw via the torque transfer portions of the recess; under which outer circumferential edge portions of the torque transfer portions of the mating convex sections to be brought into abutting contact with sidewall of the torque transfer portions of the recess with the tightening torque being transferred to the screw via force application points Q representing resulting abutment portions. | 04-26-2012 |
20130011216 | Drive Formation for a Rotary Drive - A drive formation for a rotary drive, for example a depression in the end face of a screw, has two regions with different cross-sections, but with a cross-sectional form having a certain similarity, arranged axially in succession. Due to the smaller cross section with a similar cross-sectional form, the transfer of torque can be better adapted to the form of a counter-sunk head of a countersunk head screw. The cross-sectional form corresponds to a central circular core with wing-like attachments attached thereto and protruding radially beyond the outer face of the core. The wings have side walls extending approximately parallel to one another in cross section, and therefore the wings have at least approximately the same thickness as far as their end forming an end wall. Said wings also have the same thickness when viewed over the depth of the formation, and therefore no forces causing the tool to be pushed out are produced. | 01-10-2013 |
20140044500 | Screw for Composite/Plastic Materials - A fastener for composite or plastic material having a dense composition employs a head which has a socket and a recessed underside and a lower rim. In one embodiment, the shank has an upper portion with an enlarged diameter and a left hand thread while the lower portion has a tri-lobed configuration and is traversed by a right hand thread. The right hand thread may have a plurality of notches which, in one embodiment, are arranged in a spiral array. | 02-13-2014 |
20140105704 | Antitheft Locking Device - An antitheft locking device ( | 04-17-2014 |
20150086294 | RIVET BOLT IN COMBINATION WITH AN ATTACHMENT AND PROCESS FOR MAKING SAME - A rivet bolt in combination with an attachment wherein the rivet bolt includes: a flange having a top surface and a bottom surface, and, a shaft having a threaded portion. An upper cylindrical portion of the rivet bolt includes an upper edge and an interior base surface having a drive head socket. The attachment receives the rivet bolt and comprises: a top surface, a bottom surface, a cylindrical bore therethrough, and an inverted frusto-conical surface extending from the top surface to the cylindrical bore. The upper cylindrical portion of the rivet bolt is deformed and rotatably and slidingly engages the inverted frusto-conical surface extending from the top surface of the attachment to the cylindrical bore therethrough. The upper cylindrical portion of the rivet bolt resides partially within the cylindrical bore. A process for making a rivet bolt in combination with an attachment is disclosed. | 03-26-2015 |
20150093212 | ASYMMETRIC FASTENER RECESS AND KEY - A fastening system including a pin member and a key for engaging the pin member. The pin member includes a shank portion and a recess formed within an end face of the shank portion. The recess includes a plurality of splines and recesses that form first and second bearing surfaces oriented at angles. The key includes a key head having a plurality of splines and grooves that form first and second bearing surfaces oriented at angles. The plurality of splines and recesses of the pin member and the plurality of splines and recesses of the key are adapted to communicate with each other when tightening and loosening the pin member. | 04-02-2015 |
20160115988 | SCREW WITH A SCREW HEAD WHICH HAS A DRIVE - A screw with a screw head which has a drive that includes cams that are formed by recesses introduced around the cams. The cams are used to transmit torque, in which, on the cam end facing the screw head, a cam has a cam head surface inclined with respect to a plane that extends perpendicular to the screw axis. The radial extension of the cams is arranged and designed such that the cams centre a tool introduced into the screw drive. The cam head surface has a first surface and a second surface, each of which is inclined in its respective rotational direction and which intersect each other in an intersection line. | 04-28-2016 |
411404000 | Orthogonally arranged slots, e.g., Phillips head, etc. | 8 |
20090003967 | LOBULAR DRIVE SYSTEM WITH INTERFERENCE FIT AND METHOD AND APPARATUS FOR FABRICATING SAME - A fastener which includes a recess that includes a plurality of alternating lobes and recesses, where each of the flutes and lobes is twisted or angled. The fastener can be driven using a conventional multi-lobular driver. Alternatively, a driver which also has angled or twisted flutes and lobes can be used to engage the recess and drive the fastener. A punch pin includes a head that has a plurality of alternating lobes and recesses that are twisted or angled. The head of the punch pin is configured to punch the recess into the head of the fastener. A device retains the punch pin such that the punch pin can rotate out of the recess after the punch pin punches the recess into the head of the fastener. | 01-01-2009 |
20090074536 | SPIRAL DRIVE FASTENER WITH FRICTION ENGAGEABLE SURFACE - Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surface to create a “stick fit” engagement. The punch is formed using a wire EDM operation to construct tapered surfaces within the die cavity of a hob. The hob is machined down to obtain the desired depth, which is measured up from a gage spot indicative of the sticking point. | 03-19-2009 |
20090104002 | High strength fastener system - A fastener system is constructed wherein the installation and removal drive surfaces intersect an enlarged core diameter in a transitional surface that extends between the installation and removal surfaces of adjacent wings. The transitional surface has a concave form that conforms to the core diameter. The projections of the driver in the system are formed in a blunt shape. | 04-23-2009 |
20090136319 | THREADED SCREW FASTENER - A threaded screw fastener has a point, a shank and a head. The point is a ballistic point. The shank comprises a linear travel area, preferably unthreaded, adjacent to the point and a threaded area between the linear travel area and the head. The head is a bugle head formed with a Phillips-style recess configured to receive a driver or driving bit. The fastener is configured fasten a surface material to a substrate material and to be linearly driven into the materials before rotation of the fastener is required, thus reducing the number of rotations required to drive the fastener. The fastener is particularly suited to be used with powered driving tools that utilize both linear and rotating driving means. | 05-28-2009 |
20090148254 | FLANGE HEADED SCREW - A flange headed screw. The flanged headed screw has a threaded shank portion with a shank diameter, a distal tip, and a proximal end. A stop flange with a diameter that is larger than the shank diameter of the threaded shank located at the proximal end of the threaded shank portion. A projection portion extends from the stop flange, and the projection portion has a diameter smaller than the diameter of the stop flange. A driving head with a driving engagement located at a proximal end of the projection portion. | 06-11-2009 |
20100129176 | SCREW HEAD RECESS DRIVE AND CORRESPONDING DRIVER TOOL AND RECESS PUNCH - A fastener with a recess head wherein the drive head has four lobular recess channels. Each channel comprises a first wall, a second wall, a bottom surface and a recess sidewall. The first and second walls have portions opposing each other and a constant radius of curvature to form a continuously and smoothly forming wall of the channel. A torque producing driver tool is defined with cross sectional signature substantially complementary in size and shape of the recess of the drive head of the fastener for matable engagement. A recess punch for manufacturing the fastener is also defined and comprises a punch holder and a punch pin integral with the holder. | 05-27-2010 |
20110182696 | STRUCTURE OF CROSS-SHAPED GROOVE OF SCREW FOR FIT WITH DRIVER BIT - The present invention provides a screw capable of efficiently transmitting rotational force of a driver bit to the screw while obtaining excellent interlocking effect of the driver bit with a cross-shaped groove of the screw. In the structure of the cross-shaped groove of the screw for fit with a driver bit, bilaterally-formed inner side faces of each of the first to fourth wing grooves | 07-28-2011 |
20150308472 | System, Method, and Apparatus for Joining Honeycomb Panels - An adhesive-potted fastener and method for using such to join honeycomb core panels, where one of the two panels is secured on edge, at an angle to the surface of the second panel, includes a fastener having a head, cavity, threads, and through holes for the infusion of the adhesive potting compound. The fastener secures to the unreinforced honeycomb core in the honeycomb core panel normal to the surface of the second honeycomb core panel, holding the panels together until a proper amount of adhesive potting compound is flowed the interior of both panels. After curing of the adhesive potting compound, the physical attributes serve as a structural force-bearing member of an adhesive joint between the two honeycomb core panels in tension, torque and shear. | 10-29-2015 |
411405000 | Opposed open ended plural slots, e.g., spanner, etc. | 3 |
20110070051 | FASTENER - A fastener includes a socket-engaging part and a securing part. The socket-engaging part has an external surrounding surface having at least one planar surface region and formed with grooves. Edges of the grooves and the planar surface region are disposed on an imaginary hexagonal prism, in a manner that the socket-engaging part can be sleeved in a hexagonal socket wrench. One of the edges of each groove contacts a respective one of inner surface portions of the hexagonal socket wrench, and the planar surface region contacts one of the inner surface portions of the hexagonal socket wrench when the hexagonal socket wrench is sleeved on and rotated to drive rotation of the socket-engaging part. An imaginary circumscribed cylinder of the external surrounding surface has a diameter slightly shorter than that of a receiving hole of a spline socket wrench, so that the socket-engaging part can be sleeved in and driven to rotate by the spline socket wrench. | 03-24-2011 |
20130164097 | SECURITY FASTENER - A fastener includes a screw rod and a head connected to the screw rod. The head includes a driving surface furthest from the screw rod. The driving surface defines at least two driving grooves arranged around a circumference of a circle with an axis of the screw rod being the center of the circle. The driving surface forms at least two driving lobes received in each of at least two driving grooves, and the at least two driving lobes are located at the circumference of the circle around the axis of the screw rod. | 06-27-2013 |
20140363257 | TAMPER-RESISTANT FASTENER - A tamper-resistant fastener includes a non-circular drive recess optionally with a non-circular center post. Preferably the recess and center post are at least partially ellipsoidal cylinders that are concentric and aligned (i.e. they share a common major axis direction). This configuration forms a slot having preferably a substantially uniform width into which an authorized driver is inserted. The length of the major maximum dimension of the post is selected so that a circular arc tangent to the maximum radius of the post will pass closely to or intersect the minimum radial dimension of the recess. | 12-11-2014 |
411406000 | Dovetail | 2 |
20150063948 | FASTENER WITH MULTILOBULAR TOOL ENGAGING PORTION - A fastener comprising a fastener body and a fastener head is disclosed. The fastener body has a threaded portion and defines a longitudinal axis. The fastener head is arranged at one end of the fastener body, and comprises a tool engaging portion. The tool engaging portion comprises a plurality of alternating lobes and flutes forming a multilobular surface pattern, each lobe having a driven surface arranged to engage with a driving surface of a tool, and a trailing surface arranged opposite to the driven surface. The driven surface and the trailing surface extend substantially parallel to the longitudinal axis defined by the fastener body. The trailing surface of at least one lobe is provided with a modified zone in which a diameter of the lobe is increased, said modified zone providing a wedging effect between the tool engaging portion and a tool. | 03-05-2015 |
20150104271 | PUNCH PINS, ASSOCIATED SOCKETS, AND METHODS OF FORMING SOCKETS USING PUNCH PINS - Punch pins which have further extending lobes, and which are designed to punch sockets that have deeper flutes while not having lobes which extend further toward a center axis of the fastener. Using such a punch pin to form a socket in a fastener provides that the resulting socket has flutes which are deeper than they otherwise would be, without having to provide corresponding lobes which extend further toward the center axis of the socket. This extra deepness in the flutes helps to provide extra room for a coating to deposit. | 04-16-2015 |
411407000 | Having driver retaining means | 4 |
20100143072 | Fastener and Driving Tool - An improved fastener ( | 06-10-2010 |
20110217143 | FASTENER SYSTEM WITH STABLE ENGAGEMENT AND STICK FIT - Various embodiments described herein provide a fastener system having straight walled driving surfaces that provides a reliable stick fit feature, while also improving stability of engagement between the system components. A feature of the new system is to allow engagement of existing standard straight walled drivers in the new system. | 09-08-2011 |
20120034049 | RATCHET FIT FASTENER - A ratchet mounting fastener includes a rigid body having a socket drive receiving cavity formed in a first end for receiving a male socket drive shaft into snug mating engagement and releasable locking means to releasably lock the fastener onto the drive shaft, and having a threaded portion on an opposite second end for threaded mating engagement of the threaded portion with a threaded second fastener, the cavity and the threaded portion are oppositely disposed for mounting of the drive shaft to the cavity and mounting of the second fastener to the threaded portion from opposed facing opposite directions. | 02-09-2012 |
20130129447 | Modified Fastener and Insertion Tool - According to example configurations, a modified screw head includes one or more slots or grooved channels. A screwdriver device includes a tip that can be inserted into a cavity in the head of the screw to torque the modified screw into an object. The screwdriver device includes a sleeve. The sleeve slides along a shaft of the screwdriver. The sleeve includes inward protruding posts (e.g., pins, fingers, etc.). Sliding of the sleeve over the screw's head requires that inward protruding posts in the sleeve be aligned with the grooves on the sidewall of the screw's head. Subsequent to aligning and sliding the sleeve into the grooved channels of the screw's head, the user twists the sleeve to secure the screw head to the screwdriver's tip. The sleeve can be spring-loaded to pull the head of the screw toward a handle end of the screwdriver after a user releases the sleeve. | 05-23-2013 |
411408000 | Frictional engagement | 2 |
20100047036 | FIXING DEVICE FOR ROTARY BLADE - When a conventional tool-less clamp is applied to exiting circular saw machines, an inclination angle and a cutting depth in the case of an oblique cutting operation have been sacrificed because the size in the radial direction or the thickness direction becomes larger. The present invention is aimed to make a saw-blade fixing device to be tool-less without sacrificing these functions. | 02-25-2010 |
20100143073 | HEXAGONAL SCREW HEAD - An improved hexagonal screw head being shaped on a top end of a threaded shank, wherein six edges of the hexagonal screw head are formed concave arc shapes caved in toward a center of the hexagonal screw head; thereby the six corners of the hexagonal screw head are shaped as sharp corners to provide better supporting strength against being easily damaged. | 06-10-2010 |
411409000 | Wing structure | 2 |
20130084145 | SELF-CONTAINED TOOL BOLT - A self-contained tool bolt has a head section comprising a top member and a handle section which is expandable from a stored position to a laterally outward, cantilevered position relative to the top member, to provide enhanced tightening and loosening capability of the tool bolt. The tool bolt also comprises a rigid shaft extending from the top member and a bolt section, with external threads, slideably mounted and moveable along the shaft. When the bolt section is at its lowest point on the shaft, the handle section is elevated to provide clearance from obstructions during tightening and loosening of the tool bolt. | 04-04-2013 |
20130177369 | Tire Puncture Repair Tool - A tire puncture repair apparatus may include a handle, a puncture repair screw, and an integral neck between the handle and the puncture repair screw. The puncture repair screw may include a screw head, a cylindrical shaft extending from the screw head opposite the neck, a partially threaded and solid cone that uniformly narrows from the shaft to a tip opposite the shaft, and a conic-helical thread coiled about the cone between the tip and the shaft. The diameter of the shaft may be approximately equal to the diameter of the cone at the widest point of the cone. The thread on the cone may include an angled ridge and may be coiled around the cone from the intersection of the shaft and the cone to before tip of the cone. | 07-11-2013 |
411410000 | Plural diverse driving structures | 4 |
20080226423 | Multi-tiered-recess Screws | 09-18-2008 |
20090220321 | FASTENING METAL FITTING - The fastening metal fitting which allows satisfactory fastening by a hexalobular wrench at the time of assembly and allows loosing or fastening not only by a hexalobular wrench but also by a wide use of wrenches such as a common hexagon wrench at the time of disassembly and repair, which includes the head and the axial portion having the screw portion, in which at the center of the head, the tool insertion hole is formed with the hexagonal socket portion and the circularly-arced notched portions outwardly protruding from the respective corners of the socket portion which are provided at the corners continuously. The bolt which can be fastened or loosen by a wide use of a 12-point wrench, an open-end wrench for a hexagon head bolt or a square head bolt, a common hexagon wrench and a hexalobular wrench is formed to be a regular square as seen from the top with the four triangular projections on diagonals of the vertical line and the horizontal line passing the center of a regular dodecagon removed from the regular dodecagon and is formed to have the V-shaped engaging slots left at the respective corners, as well as having, at the center of the head, the hole of a regular hexagonal shape which has the circularly-arced notched portions outwardly protruding from the respective corners of the hole which are provided at the corners continuously. | 09-03-2009 |
20090257844 | Recessed head screw - A recessed head screw includes a head portion having a driver-engaging part between top and bottom faces thereof. The driver-engaging part includes a recess extending downwardly from the top face, four spaced-apart slanting walls slanting downwardly and convergingly from the top face, and four first bearing pieces each spacing two adjacent ones of the slanting walls and each having a four-sided first bearing face, and two substantially triangular second faces interconnected by the first bearing face. At least two second bearing pieces extend downwardly and respectively from bottoms of two opposite first bearing pieces. Each second bearing piece has a connecting face, and a third bearing face extending downwardly and inwardly from the connecting face. The connecting face inclines with respect to both of the third bearing face and the respective first bearing face. | 10-15-2009 |
20120057949 | MODIFIED FASTENER AND INSERTION TOOL - According to example configurations, a modified screw head includes one or more slots or grooved channels. A screwdriver device includes a tip that can be inserted into a cavity in the head of the screw to torque the modified screw into an object. The screwdriver device includes a sleeve. The sleeve slides along a shaft of the screwdriver. The sleeve includes inward protruding posts (e.g., pins, fingers, etc.). Sliding of the sleeve over the screw's head requires that inward protruding posts in the sleeve be aligned with the grooves on the sidewall of the screw's head. Subsequent to aligning and sliding the sleeve into the grooved channels of the screw's head, the user twists the sleeve to secure the screw head to the screwdriver's tip. The sleeve can be spring-loaded to pull the head of the screw toward a handle end of the screwdriver after a user releases the sleeve. | 03-08-2012 |