# US 12,000,423 B2 · Lightweight-construction fastener > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,000,423 B2 - Document ID: US12000423B2 - Status: Granted - Kind: B2 - Application number: 17/793,078 - Filed: 2021-01-15 - Published: 2023-02-09 - Granted: 2024-06-04 - Earliest claimed: 2020-01-17 - Assignees: SFS Group International AG - Applicants: SFS Group International AG - Inventors: Philipp Gentner; Sascha Costabel - Web page: https://patentgrep.com/patent/US12000423B2 ## CPC - F16B 37/044: {Nut cages} - F16B 37/043: {with snap action} - F16B 37/04: Devices for fastening nuts to surfaces, e.g. sheets, plates {(nuts fastened behind a wall by a toggle-mechanism F16B13/0808; threaded inserts F16B37/122; measures against loss of bolts, nuts or pins F16B41/002)} - F16B 41/002: {Measures against loss of bolts, nuts or pins (devices for fastening nuts to surfaces F16B37/04)} - 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) ## Abstract A lightweight-construction fastener (10) having a one-piece clip body (20) made of plastic and a clip nut (40). The clip body has the basic shape of a clamp, having two opposite legs (22, 24) extending in the longitudinal direction and a cage (28) in which the clip nut is floatingly mounted. The clip nut in turn has a nut base (42) which is substantially planar. A main part (44) is structured on the nut base and has a cover surface (41) and a plurality of side walls (51, 51′) which extend between the nut base and the cover surface. The side walls of the main part preferably have a convex curvature and the cage has correspondingly designed concave walls. The sizing is such that the convex-concave surface pairs act as torque supports during use of the lightweight-construction fastener. ## Claims ### Claim 1 A lightweight-construction fastener, comprising: a one-piece clip body formed of plastic and having a basic form of a clamp with two opposite legs extending in a longitudinal direction and a web which connects two opposite leg ends; a receiving space for a plate-shaped component between the legs which is delimited on one side by the web; a clip nut which has a nut base configured to be substantially plate-shaped with a flat, planar base surface facing toward an inside of the clamp; a main body built up on the nut base having a covering surface as well as a multiplicity of side walls which extend between nut base and covering surface; the main body has a substantially polygonal cross-section parallel to the nut base; a central middle opening extends through the nut base, the main body and the covering surface; a first leg of the clip body has a cage comprised of multiple wall elements in which the clip nut is mounted to be movable in a floating manner; the cage has at least two holding openings, the second leg toward the inside of the clamp is configured as a tongue-shaped, flat bearing surface, and the first leg in a region of the cage and the second leg in a region of the tongue have in each case an opening which are flush with the central middle opening of the clip nut arranged in the cage; the first leg is configured so that the base surface of the clip nut points toward the inside of the clamp and is formed as a bearing surface for direct contact with the plate-shaped component; and the main body of the clip nut has at least two pin-shaped lugs which engage in the openings of the wall elements of the cage. ### Claim 2 (depends on 1) The lightweight-construction fastener as claimed in claim 1, wherein the multiplicity of side walls includes a number of n side walls of the clip nut main body that are concavely arched, wherein n=>3. ### Claim 3 (depends on 2) The lightweight-construction fastener as claimed in claim 2, wherein at least n inwardly directed wall elements of the cage are inwardly convexly arched. ### Claim 4 (depends on 3) The lightweight-construction fastener as claimed in claim 3, wherein the side walls of the clip nut main body and the wall elements of the cage are arranged opposite one another in pairs. ### Claim 5 (depends on 3) The lightweight-construction fastener as claimed in claim 3, wherein at least one of the concavely arched side walls or the convexly arched wall elements are arched in a form of conical sections. ### Claim 6 (depends on 3) The lightweight-construction fastener as claimed in claim 3, wherein the concavely arched side walls or the convexly arched wall elements are arched in a form of circular arcs. ### Claim 7 (depends on 6) The lightweight-construction fastener as claimed in claim 6, wherein radii of the circular arcs for the at least one of the concavely arched side walls or the convexly arched wall elements are selected to be substantially the same. ### Claim 8 (depends on 1) The lightweight-construction fastener as claimed in claim 1, wherein the central middle opening of the clip nut has an internal thread. ### Claim 9 (depends on 8) The lightweight-construction fastener as claimed in claim 8, wherein a run-out of the thread facing the covering surface is configured so that a screwed-in fastener is secured in a clamping manner. ### Claim 10 (depends on 1) The lightweight-construction fastener as claimed in claim 1, wherein the clip nut is manufactured in one piece from plastic. ### Claim 11 (depends on 1) The lightweight-construction fastener as claimed in claim 1, wherein the nut base has, on an upper side thereof facing away from the base surface, supporting regions which have a concave arching and are configured to enable a rolling movement or tilting of the clip nut along the first leg. ### Claim 12 (depends on 1) The lightweight-construction fastener as claimed in claim 1, wherein the nut base has a chamfer tapered toward the base surface. ### Claim 13 (depends on 1) The lightweight-construction fastener as claimed in claim 1, wherein the nut base has, on an edge opposite the chamfer, a stop edge which, with the clip nut is mounted in the cage, is arranged spaced apart parallel opposite an emergency bearing surface. ### Claim 14 (depends on 1) The lightweight-construction fastener as claimed in claim 1, wherein the clip body is manufactured in one piece from plastic. ### Claim 15 (depends on 1) The lightweight-construction fastener as claimed in claim 1, wherein the clip body is embodied in one piece as a 2-component injection molded part, and a first plastic component is selected to be more elastic than a second plastic component of the clip body. ### Claim 16 (depends on 15) The lightweight-construction fastener as claimed in claim 15, the more elastic component is primarily used in a region of the second leg or the tongue and in a region of the web.