# US 12,014,845 B2 · Composite cable > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,014,845 B2 - Document ID: US12014845B2 - Status: Granted - Kind: B2 - Application number: 17/951,254 - Filed: 2022-09-23 - Published: 2023-03-30 - Granted: 2024-06-18 - Earliest claimed: 2021-09-28 - Assignees: Proterial, Ltd. - Applicants: Hitachi Metals, Ltd. - Inventors: Tomoyuki Murayama; Yoshikazu Hayakawa; Hirotaka Eshima; Takahiro Futatsumori - Web page: https://patentgrep.com/patent/US12014845B2 ## CPC - H01B 7/0208: {Cables with several layers of insulating material} - H01B 11/002: {Pair constructions} - B60R 16/0215: {Protecting, fastening and routing means therefor} - H01B 11/02: Cables with twisted pairs or quads - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR ## Abstract A composite cable is composed of plural electric power wires, a first twisted wire made by laying plural signal wires together, a second twisted wire disposed opposite the first twisted wire with the electric power wires between the first twisted wire and the second twisted wire, and a sheath formed over plural electric power wires, the first twisted wire, and the second twisted wire. The second twisted wire is made by laying plural electric wires including a grounding wire together. Each of the plural electric wires of the second twisted wire is composed of a conductor and an insulator formed over the conductor. ## Claims ### Claim 1 A composite cable, comprising: plural electric power wires; a first twisted wire made by laying plural signal wires together; a second twisted wire disposed opposite the first twisted wire with the electric power wires between the first twisted wire and the second twisted wire, the second twisted wire being made by laying plural grounding wires having a cross-sectional area smaller than that of the plural electric power wires; and a sheath formed over plural electric power wires, the first twisted wire, and the second twisted wire, wherein each of the plural grounding wires of the second twisted wire is composed of a conductor and an insulator formed over the conductor. ### Claim 2 (depends on 1) The composite cable according to claim 1, wherein the plural grounding wires of the second twisted wire are substantially equal in outer diameter. ### Claim 3 (depends on 2) The composite cable according to claim 2, wherein the plural grounding wires of the second twisted wire are substantially equal in outer diameters of the conductors. ### Claim 4 (depends on 3) The composite cable according to claim 3, wherein each of the plural signal wires of the first twisted wire is composed of a signal wire conductor and a signal wire insulator formed over the signal wire conductor, wherein the plural signal wires of the first twisted wire and the plural grounding wires of the second twisted wire are substantially equal in outer diameter, wherein the signal wire conductors of the plural signal wires of the first twisted wire and the conductors of the plural grounding wires of the second twisted wire are substantially equal in outer diameter. ### Claim 5 (depends on 1) The composite cable according to claim 1, wherein the plural grounding wires of the second twisted wire are made by using a same material for the conductors, and by using a same material for the insulators. ### Claim 6 (depends on 5) The composite cable according to claim 5, wherein each of the plural signal wires of the first twisted wire is composed of a signal wire conductor and a signal wire insulator formed over the signal wire conductor, wherein the plural signal wires of the first twisted wire and the plural grounding wires of the second twisted wire are made by using a same material for the signal wire conductors and the conductors, and by using a same material for the signal wire insulators and the insulators. ### Claim 7 (depends on 1) The composite cable according to claim 1, further comprising: a separator provided around the plural electric power wires, the first twisted wire, and the second twisted wire, wherein the sheath is formed over an outer periphery of the separator and is formed in a single layer. ### Claim 8 (depends on 1) The composite cable according to claim 1, wherein each of the plural grounding wires is connected to ground. ### Claim 9 (depends on 1) The composite cable according to claim 1, wherein each of the plural electric power wires comprises an electric power wire conductor and an electric power wire insulator formed over the electric power wire conductor, and wherein the electric power wire conductor of each of the plural electric power wires is formed in a single layer. ### Claim 10 (depends on 1) The composite cable according to claim 1, wherein the composite cable comprises two of the first twisted wire and two of the second twisted wire. ### Claim 11 (depends on 1) The composite cable according to claim 1, wherein the sheath is formed by extrusion molding on an outer periphery of the plural electric power wires, the first twisted wire, and the second twisted wire. ### Claim 12 (depends on 1) The composite cable according to claim 1, wherein the plural electric power wires have a circular cross-section. ### Claim 13 (depends on 1) The composite cable according to claim 1, wherein the plural electric power wires are aligned with each other so as to be contiguous to each other. ### Claim 14 (depends on 1) The composite cable according to claim 1, further comprising a separator, the sheath being formed on an outer periphery of the separator. ### Claim 15 (depends on 14) The composite cable according to claim 14, wherein the plural electric power wires are contiguous to each other, and wherein the first twisted wire and the second twisted wire are disposed so as to fit in two side regions, respectively, enclosed between the plural electric power wires contiguous to each other, and the separator. ### Claim 16 (depends on 1) The composite cable according to claim 1, wherein the first twisted wire and the second twisted wire are disposed on mutually opposite sides of the plural electric power wires, the plural electric power wires being contiguous to each other. ### Claim 17 (depends on 1) The composite cable according to claim 1, wherein the first twisted wire and the second twisted wire are disposed so as to be devoid of contacting each other. ### Claim 18 (depends on 1) The composite cable according to claim 1, wherein in a cross-section of the composite cable, a shortest distance between the plural electric power wires is smaller than a shortest distance between the first twisted wire and the second twisted wire. ### Claim 19 (depends on 1) The composite cable according to claim 1, wherein a number of grounding wires of the second twisted wire is the same as a number of signal wires of the first twisted wire.