# US 9,435,366 B2 · Method for establishing a nail connection and nails therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,366 B2 - Document ID: US9435366B2 - Status: Granted - Kind: B2 - Application number: 13/618,229 - Filed: 2012-09-14 - Published: 2013-01-10 - Granted: 2016-09-06 - Earliest claimed: 2006-01-17 - Assignees: Böllhoff Verbindungstechnik GmbH - Applicants: Torsten Draht; Gerson Meschut - Inventors: Torsten Draht; Gerson Meschut - Web page: https://patentgrep.com/patent/US9435366B2 ## CPC - F16B 19/14: Bolts or the like for shooting into concrete constructions, metal walls or the like by means of detonation-operated nailing tools (tools therefor B25C, B27F) - F16B 15/06: with barbs, e.g. for metal parts; Drive screws - Y10T 29/49833: Punching, piercing or reaming part by surface of second part - Y10T 29/49835: with shaping - Y10T 29/49837: of first part - Y10T 29/49947: by applying separate fastener - Y10T 29/5343: Means to drive self-piercing work part - Y10T 29/53522: Means to fasten by deforming - F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A method is described for establishing a nail connection between two components as well as a nail therefor. The nail is driven through the non-prepunched components in the joining area at a high speed such that the nail tip fully penetrates both components and forms a toric-shaped material bulge in the nail-head-side component, which protrudes into a circular groove of the nail head, and a crater-shaped material bulge is formed in the component facing away from the nail head, which protrudes in the opposite direction. ## Claims ### Claim 1 A combination comprising a nail which establishes a connection between two non-prepunched components made of steel, aluminum, magnesium or plastic, wherein the nail, including a nail head, a nail shaft and a nail tip is designed rotationally symmetrically, the nail being made from a single piece comprising: the nail head which is a flat head with an even top side, a cylindrical circumferential surface and an even bottom side wherein a circular groove is formed in the even bottom side adjacent to on the one hand the nail shaft and on the other hand an outer surface of the even bottom side extending to the cylindrical circumferential surface in order to transfer a setting force at an end of a setting process from a piston to the components, said circular groove receiving a toric-shaped material bulge of a nail-head side component; wherein the nail shaft is primarily cylindrical and is provided with a surface profiling for receiving material from a component of the combination facing away from the nail head and wherein material from the component facing away from the nail head is drawn along the nail shaft to form a material bulge; and the nail tip having an ogival shape with an ogivality factor of 3 to 5. ### Claim 2 (depends on 1) The combination according to claim 1, wherein the circular groove has a rounded surface adjacent to the nail shaft, in which the rounded surface transitions into a conical surface. ### Claim 3 (depends on 1) A nail according to claim 1, wherein nail shaft is designed convergent in the direction of the nail head. ### Claim 4 (depends on 1) A nail according to claim 1, wherein the nail shaft is shaped divergent in the direction of the nail head. ### Claim 5 (depends on 1) The combination according to claim 1, wherein the surface profiling is arranged only in one area of the nail shaft, which lies within the component facing away from the nail head. ### Claim 6 (depends on 1) The combination according to claim 1, wherein the ratio of the maximum depth of the surface profiling to the average diameter of the nail shaft is less than 0.1. ### Claim 7 (depends on 1) The combination according to claim 1, wherein the surface profiling consists of a series of circular recesses and ridges so that the surface profiling in axial sections is made up of a rounded wave-like profile. ### Claim 8 (depends on 1) A nail according to claim 1, wherein the surface profiling in axial sections is made up of a sawtooth profile. ### Claim 9 (depends on 1) A nail according to claim 1, wherein the surface profiling is formed from a series of circular recesses and ridges. ### Claim 10 (depends on 1) A nail according to claim 1, wherein the surface profiling is formed by a thread, which forms a corresponding counter thread during the axial driving of the nail into both components. ### Claim 11 (depends on 10) A nail according to claim 10, wherein the incline of the thread formed by the surface profiling is less than 0.35. ### Claim 12 (depends on 10) A nail according to claim 10, wherein the nail head has a drive characteristic for the engagement of a tool, in order to be able to release the nail from the two components again. ### Claim 13 (depends on 1) A nail according to claim 1, including a profile-free section provided between a part of the nail shaft provided with a surface profiling and the nail tip. ### Claim 14 (depends on 13) A nail according to claim 13, including a reduced diameter section provided between a part of the nail shaft provided with a surface profiling and the nail tip. ### Claim 15 (depends on 1) The combination according to claim 1, wherein the even top side of the nail head is mainly even up to its outer edge in order to mainly transfer the setting forces exerted on the nail head in the end position of the nail to a nail-head-side component and to thereby avoid a penetration of the nail through the two components. ### Claim 16 (depends on 1) The combination according to claim 1, wherein the nail tip has an ogivality factor of 4. ### Claim 17 (depends on 1) The combination according to claim 1, wherein the nail is made of the single piece of a material from the group consisting essentially of steel, aluminum, magnesium, brass, ceramic and a fiber-reinforced plastic. ### Claim 18 (depends on 1) The combination according to claim 1, wherein the nail head is a countersunk head, the even bottom side of said nail head having a diagonally running section and the circular groove across from it such that the countersunk head enters at least partially the material of a nail-head-side component.