Class / Patent application number | Description | Number of patent applications / Date published |
081460000 | Inserted portion having plural, noncollinear blades (e.g., Phillips) | 27 |
20090260489 | DRIVE SYSTEM - An article for use in a torque transmitting system which has a drive surface configuration having side and end surfaces is disclosed. The end surface tapers upwardly and outwardly from a lowermost point provided along a longitudinal axis to the side surface. The end surface defines a plurality of identically configured lobes that extend from a first point to a second point. The first point of one lobe is identical to the second point of an adjacent lobe. The first and second points of each lobe are provided along an imaginary circle having its center along the longitudinal axis. Each lobe extends from the first point to the second point by a series of edges that are straight, concave and/or convex. Two of the edges are tangential to the imaginary circle. The side surface extends upwardly from the edges defining the plurality of lobes. | 10-22-2009 |
20100037737 | COMBINATION DRIVING TOOL FOR PHILLIPS AND ROBERTSON FASTENERS - Embodiments of a driving tool are disclosed that comprise a shank portion, and a working portion, wherein the working portion is configured to drive either a Phillips head fastener or a Robertson head fastener. | 02-18-2010 |
20100269644 | SCREW HEAD AND TOOL FOR USE THEREWITH - Disclosed is a screw head having a slot ( | 10-28-2010 |
20100288086 | Screwdriver Head - An improved screwdriver head structure having a blade portion and a connecting portion, characterized in that: the blade portion is located on one end of the screwdriver head and has two or more engaging surfaces, wherein each of the engaging surfaces is regularly disposed with a plurality of protruding cones at equal distance, the tip of each of the protruding cones has a touching point, and the touching points of the protruding cones are on the same plane; the connecting portion is located on the other end of the screwdriver head for the connection with a screwdriver handle; and when a user uses the blade portion to fasten a screw, the touching points of the protruding cones on the blade portion fully engage with the screw, thereby providing larger friction and even force distribution. | 11-18-2010 |
20110048181 | SCREW HEAD RECESS STRUCTURE AND ITS DRIVING TOOL - A screw head recess structure and its driving tool that maximizes torque are provided, applicable to any kinds of rotational fasteners, such as screws or bolts. A recess has an irregular shape formed by a plurality of lobular grooves arranged around the center point of a fastener as an axis. A plurality of facets of corresponding grooves along both sides of central lines is formed that receive forces when the fastener rotates clockwise and anticlockwise. As a driving tool having a matching configuration with the recess structure rotates the recess, moment arms of forces and reaction forces exerted upon corresponding facets are on the same central lines, thus maximizing the torque generated by the driving tool. In addition to maximizing the torque, the recess structure is also special in that on which ordinary driving tools cannot operate, thereby protecting the fastener against unwanted disassembly. Moreover, the depth of the recess can be kept shallow since operation of which is effort-saving. This makes the present invention especially suitable for applications that require compact and light fasteners. | 03-03-2011 |
20110079119 | Screwdriver - A screwdriver includes a shank and a head formed at an end of the shank. The shank is made with a diameter. The head is formed with blades. Each of the blades includes an edge. The distance between the edges of any two opposite ones of the blades is larger than the diameter of the shank. | 04-07-2011 |
20110203423 | 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. | 08-25-2011 |
20110283842 | Screwdriver bit structure - A screwdriver bit structure sequentially comprises a connection section, a neck reducing section and a driving section. A plurality of arc grooves is circularly disposed to a front of the driving section to form an operating end capable of embedding with a locking member. An effective working section is disposed to a front of the operating end, the characterized in that a reinforcement section is preset between an end of each arc groove of the driving section and a relative bottom edge of the driving section. An external diameter of a maximum cross-section of the effective working section is greater than a length of the neck reducing section. An external diameter of the neck reducing section is greater than or equal to a length of the working section. An upper tapering transition is disposed between the neck reducing section and the driving section. | 11-24-2011 |
20120103147 | COUPLING STRUCTURE BETWEEN SCREW HEAD AND TIGHTENING TOOL - A coupling structure between a screw head and a tightening tool includes a recess ( | 05-03-2012 |
20120137842 | FASTENER, DRIVER ENGAGING WITH THE FASTENER AND PUNCH PRODUCING THE FASTENER - A fastener includes a connecting portion and a head portion connected with the connecting portion. The head portion defines an engaging hole and includes a plurality of protruding teeth separately formed on an inner peripheral wall of the engaging hole, respectively, toward a central axis of the engaging hole of the head portion, and a plurality of recesses are formed between every two adjacent protruding teeth, respectively. The head portion further includes a plurality of resisting projections separately formed on the inner peripheral wall of the engaging hole, toward the central axis of the engaging hole, and received within the corresponding plurality of the recesses of the head portion, respectively. The present disclosure further provides a driver engaging with the fastener and a punch producing the fastener. | 06-07-2012 |
20120192685 | 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. | 08-02-2012 |
20120285301 | Screwdriver Bit - A screwdriver bit configured in such a way that when the tip of the screwdriver bit is to be fitted into a bit fitting groove of a screw, said bit fitting groove being formed on the top surface of the head of the screw, then damage is prevented from occurring on the top surface of the head of the screw, and proper fitting of the tip of said bit into the bit fitting groove is promptly and smoothly accomplished, with the result that the efficiency and safety of screw tightening work are significantly enhanced. This driver bit ( | 11-15-2012 |
20130068075 | Rotary Drive Design - A design for a rotary drive both for a tool and for a workpiece to be rotationally driven is proposed. This rotary drive design contains a cylindrical basic shape which deviates from a circular cylindrical shape. The contour or the cross section through this basic shape has a plurality of rounded projections and rounded recesses arranged between said projections. The projections tangentially touch a circle having a maximum radius, while the recesses, for their part, tangentially touch a circle having a minimum radius. Deviating from this cylindrical basic shape, in the regions between the projections are configured conical surfaces, which are not instrumental in the transmission of torques, but take care of centering and alignment between the tool and the workpiece. | 03-21-2013 |
20130139659 | Pivotal Wrench - A pivotal wrench includes a handle having a first pivot portion provided with first positioning holes, a tool head having a second pivot portion provided with second positioning holes, a connector pivotally connected between the handle and the tool head, two positioning members each mounted in the connector and each positioned in one of the first positioning holes and one of the second positioning holes, and an elastic member mounted in the connector and biased between the positioning members. Thus, the handle is pivoted relative to the connector, and the tool head is pivoted relative to the connector, so that the working angles of the handle and the tool head can be adjusted freely, and the pivotal wrench is available for a limited or narrow working place. | 06-06-2013 |
20130160616 | 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. | 06-27-2013 |
20130276596 | Star-Type Wrench - A star-type wrench includes a shank, a first operation portion mounted on a first end of the shank, and a second operation portion mounted on a second end of the shank. The shank is formed integrally to have a star-shaped outer diameter. Thus, the shank has a star-shaped outer diameter so that when the first operation portion or the second operation portion is broken, the first operation portion or the second operation portion can be removed from the shank, and the shank can function as an auxiliary operation portion and can be reused and operated successively. | 10-24-2013 |
20130319189 | Hand Tool - A hand tool includes a shaft, at least one affecting portion, and a protection layer. The shaft is like a bar, and can be hold by a hand. The affecting portion connects with the shaft. The affecting portion can grip a specific part which a user wants to control. The protection layer is settled and/or covered on at least one portion of the hand tool surface. The protection layer is lumpy and rough. Because of the protection layer, the hand tool is shake-proof, wear-proof, slip-resistance, and electric insulation. | 12-05-2013 |
20130340578 | Screwdriver Bit - A screwdriver bit is revealed. The screwdriver bit includes a driving portion, a narrow neck portion integrated with and extended from the driving portion, and a working segment integrated with and extended from the narrow neck portion. The narrow neck portion consists of a connection portion, a first tapered transition, and a second tapered transition. The first tapered transition is an arc taper and the second tapered transition is a straight taper. When the screwdriver bit is driven by a power tool and is rotated at high speed, the torsional stress generated is dispersed by the first tapered transition while the second tapered transition is used to reduce torsional stress of the narrow neck portion. Thus the wearing of the screwdriver bit is effectively reduced. | 12-26-2013 |
20140060268 | Screw head and tool for use therewith - The invention provides a screw in which the screw head ( | 03-06-2014 |
20140150613 | Torx Head Bit - A Torx headed bit having a Torx shaped head having a first length, a first width and grooves and protrusions, the grooves and protrusions extending along substantially the entire length of the head, the bit further including a shaft having a second length and a second width, the second width being greater that the first width, the shaft being connected to the head via a shoulder which may be sloped to gradually widen the first width to the second width and having grooves and protrusions extending along the shoulder, the shoulder grooves and protrusions substantially continuing from the grooves and protrusions extending along substantially the entirety of the length of the head. | 06-05-2014 |
20140251095 | THREADED FASTENER DRIVING TOOL - A threaded fastener driving tool includes a proximal end portion, a distal driving head, and a torsion zone extending proximally from the driving head, The distal driving head has a central portion and a plurality of driving surfaces. Each pair of adjacent driving surfaces define a driving space therebetween. The driving surfaces and driving spaces are configured to engage a threaded fastener. The torsion zone includes a plurality of helical grooves bounded by non-cutting surfaces, each helical groove in communication with and extending proximally from at least one of the driving spaces. The helical grooves are configured to untwist and cause lengthening of the torsion zone when an input torque applied to the proximal end portion is insufficient to overcome an output resistance torque at the driving head. The torsion zone may comprise a plurality of twisted wires or cables. A method of manufacturing the driving tool is disclosed. | 09-11-2014 |
20150101463 | APPARATUS FOR HOLDING AND APPLYING TORQUE TO A NUT - A tool for holding and applying torque to a nut including a keyway. The tool includes a longitudinal body having a longitudinal axis and a body channel. A longitudinal key is disposed in the body channel with one end of the key configured to engage the keyway of the nut. A first key portion contacts the body channel while a second key portion extends over the body channel forming a gap between the key and the body channel prior to insertion of the key into the keyway of the nut. The second key portion is configured to be resiliently deflected radially inward toward the longitudinal axis of the longitudinal body when the second key portion engages the keyway of the nut. | 04-16-2015 |
20160059391 | Tool, Screw and System for Transmitting a Drive Torque - The present invention relates to a drive tool, a screw and a system for transmitting a drive torque. The drive tool can be guided in a receiving recess of a connecting partner, in particular in a receiving recess of the screw, and transmit the drive torque during a rotation about a central axis. The drive tool has radially outwardly projecting first projections which are wedgeshaped in cross-section and which are suitable for transmitting the drive torque to the connecting partner. The drive tool comprises a quasi-cylindrical section in which all of the surface lines in the region of the quasicylindrical section form an angle of less than 10° with the central axis, but the outer face is, at least in sections, of conical form such that the surface lines in the respective section are inclined by at least 1.5° with respect to the central axis. | 03-03-2016 |
20160131170 | SCREW DRIVE - The invention relates to a screw with a screw head having a drive, and a corresponding drive tool, and a drive system having the screw and the drive tool. The screw embodies a screw head having a drive; the drive includes cams formed by recesses introduced in the screw head around the cams. Each cam has two side faces which are used to transmit torque, and an end face connecting the side faces. The end face has a concave surface contour on the end of the screw head facing away from the screw shank. The end face has a virtual circular periphery around the screw axis in a plane perpendicular thereto and having a radius associated with the plane has a point of contact on the cam with the end face. Over at least one portion of the axial height of the end face, a plurality of points of contact form a contact line in the centre of the end face. The drive tool incorporates a basic body having integral entraining elements in a radial extension to the outside. The basic body in which the tip for driving the screw is introduced, forms a conical portion which tapers toward the tip. | 05-12-2016 |
20160158923 | Driver Bit - The driver bit according to the present invention includes: a tip on which a cross blade is formed; a torque transmitting part having a polygonal outer circumference; and a locking groove which extends in the circumferential direction between the tip and the torque transmitting part and into which locking balls enter, wherein the tip has four blade forming grooves forming the cross blade, the blade forming grooves are continuous with the locking groove, and the blade forming grooves are arranged so that the blade forming grooves have bottom parts, at which they are connected with the locking groove, located inwardly of the outer circumference of the torque transmitting part, and the center lines are displaced from a line connecting the shaft center with vertex positions of the polygonal outer circumference and a line connecting the shaft center with center positions of sides of the polygonal outer circumference. | 06-09-2016 |
20160169491 | INTERCHANGEABLE ADAPTER FOR CHANGING LED LIGHT BULBS | 06-16-2016 |
20160199967 | FASTENER HEAD AND COMPLEMENTARY DRIVER | 07-14-2016 |