# US 10,373,724 B1 · Power cables, computing devices using the same, and methods of use > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,373,724 B1 - Document ID: US10373724B1 - Status: Granted - Kind: B1 - Application number: 15/870,384 - Filed: 2018-01-12 - Published: 2019-07-18 - Granted: 2019-08-06 - Earliest claimed: 2018-01-12 - Assignees: Microsoft Technology Licensing, LLC - Applicants: Microsoft Technology Licensing, LLC - Inventors: Ivan Andrew McCracken; Joel James Schmelzle; Miki Kashiwa - Web page: https://patentgrep.com/patent/US10373724B1 ## CPC - H01B 1/026: {Alloys based on copper} - C22C 9/00: Alloys based on copper - C22C 9/02: with tin as the next major constituent - G06F 1/1681: {Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683)} - G06F 1/1683: {for the transmission of signal or power between the different housings, e.g. details of wired or wireless communication, passage of cabling} - H01B 7/0009: {Details relating to the conductive cores} - H01B 7/0208: {Cables with several layers of insulating material} - H01B 7/04: Flexible cables, conductors, or cords, e.g. trailing cables - H01B 7/1875: {Multi-layer sheaths} - C08L 2203/202: use in electrical wires or wirecoating - H04M 1/022: {The hinge comprising two parallel pivoting axes} - 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}) - C22C: ALLOYS (treatment of alloys C21D, C22F) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract A power cable may include a first plurality of copper alloy wires having a first percentage of strengthening alloying material and a second plurality of copper alloy wires having a second percentage of strengthening alloying material. One or more of the second plurality of copper alloy wires may abut one or more of the first plurality of copper alloy wires. The second percentage of strengthening alloying material may be different than the first percentage of strengthening alloying material. Computing devices using power cables are also described. ## Claims ### Claim 1 A power cable, comprising: a first plurality of copper alloy wires having a first percentage of a strengthening alloying material; and a second plurality of copper alloy wires having a second percentage of the strengthening alloying material, one or more of the second plurality of copper alloy wires abutting one or more of the first plurality of copper alloy wires, the second percentage of the strengthening alloying material being different than the first percentage of the strengthening alloying material, wherein conductivity of the first plurality of copper alloy wires and the second plurality of copper alloy wires are greater than three thousand ohms per kilometer. ### Claim 2 (depends on 1) The power cable of claim 1, wherein the strengthening alloying material is silver. ### Claim 3 (depends on 2) The power cable of claim 2, wherein the first percentage and the second percentage of the silver are less than four percent. ### Claim 4 (depends on 1) The power cable of claim 1, wherein the strengthening alloying material is tin. ### Claim 5 (depends on 4) The power cable of claim 4, wherein the first percentage and the second percentage of the tin are less than 0.8 percent. ### Claim 6 (depends on 1) The power cable of claim 1, wherein the first percentage is greater than the second percentage. ### Claim 7 (depends on 1) The power cable of claim 1, wherein the first percentage is less than eight times the second percentage. ### Claim 8 (depends on 1) The power cable of claim 1, wherein the first plurality of copper alloy wires and the second plurality of copper alloy wires consist of seven wires. ### Claim 9 (depends on 1) The power cable of claim 1, wherein the first plurality of copper alloy wires and the second plurality of copper alloy wires consist of nineteen wires. ### Claim 10 (depends on 1) The power cable of claim 1, wherein the second plurality of copper alloy wires abut a majority of the first plurality of copper alloy wires. ### Claim 11 (depends on 1) The power cable of claim 1, wherein the second plurality of copper alloy wires are interspersed with the first plurality of copper alloy wires. ### Claim 12 (depends on 1) The power cable of claim 1, further comprising: a third plurality of copper alloy wires having a third percentage of the strengthening alloying material. ### Claim 13 (depends on 12) The power cable of claim 12, the first plurality of copper alloy wires and the second plurality of copper alloy wires consist of nineteen wires. ### Claim 14 (depends on 12) The power cable of claim 12, further comprising an insulation layer encapsulating the first plurality of copper alloy wires and the second plurality of copper alloy wires. ### Claim 15 (depends on 14) The power cable of claim 14, the third plurality of copper alloy wires surrounding the insulation layer. ### Claim 16 (depends on 15) The power cable of claim 15, the first percentage, the second percentage, and the third percentage being less than four percent of silver. ### Claim 17 (depends on 15) The power cable of claim 15, wherein the first plurality of copper alloy wires, the second plurality of copper alloy wires, and the third plurality of copper alloy wires have an affected length of less than four millimeters. ### Claim 18 (depends on 15) The power cable of claim 15, wherein the first plurality of copper alloy wires, the second plurality of copper alloy wires, and the third plurality of copper alloy wires have a range of motion of greater than one hundred and eighty degrees. ### Claim 19 (depends on 15) The power cable of claim 15, wherein conductivity of the first plurality of copper alloy wires, the second plurality of copper alloy wires, and the third plurality of copper alloy wires are greater than three thousand ohms per kilometer. ### Claim 20 (depends on 1) The power cable of claim 1, further comprising: an insulation layer encapsulating the first plurality of copper alloy wires and the second plurality of copper alloy wires; and a third plurality of copper alloy wires having a third percentage of silver, the third plurality of copper alloy wires surrounding an exterior surface of the insulation layer, the first percentage of silver, the second percentage of silver, and the third percentage of silver being less than four percent of silver, the first plurality of copper alloy wires, the second plurality of copper alloy wires, and the third plurality of copper alloy wires have an affected length of less than four millimeters, the first plurality of copper alloy wires, the second plurality of copper alloy wires, and the third plurality of copper alloy wires have a range of motion of greater than one hundred and eighty degrees.