# US 12,113,319 B2 · Anti-arc connector and pin array for a port > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,319 B2 - Document ID: US12113319B2 - Status: Granted - Kind: B2 - Application number: 18/523,649 - Filed: 2023-11-29 - Published: 2024-03-21 - Granted: 2024-10-08 - Earliest claimed: 2019-01-31 - Assignees: CommScope Technologies LLC - Applicants: CommScope Technologies LLC - Inventors: Wayne C. Hopkinson - Web page: https://patentgrep.com/patent/US12113319B2 ## CPC - H01R 24/64: for high frequency, e.g. RJ 45 - H01R 13/03: characterised by the material, e.g. plating, or coating materials - H01R 13/639: Additional means for holding or locking coupling parts together, after engagement, {e.g. separate keylock, retainer strap} - H01R 13/7135: {with ground fault protector (H01R13/7132 takes precedence)} - H01R 13/743: {integral with the housing} - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS ## Abstract To reduce sparks and arcing if an RJ plug is removed from an RJ jack while a PoE signal is present, the plug includes conductive metal blades. Each blade includes a first portion to conduct electrical signals and/or power (SAOP) between the blade and a wire within the plug. Each blade includes a second portion and a spaced third portion to conduct SAOP between the blade and a contact within a jack. A first electrical resistance value between the second portion and the first portion is at least 5% greater as compared to a second electrical resistance value between the third portion and the first portion. ## Claims ### Claim 1 A RJ plug comprising: a plug housing; a nose formed on said plug housing, adapted to be inserted into a jack; a latch on a first side of said plug housing, said latch being resiliently deflectable and adapted to engage with a structure within the jack to hold said plug housing within the jack; a plurality of channels formed in a second side of said plug housing, opposite to said first side; and a plurality of blades held within said plurality of channels, with one blade in each channel, wherein each blade is formed of a conductive material and includes a first portion to conduct electrical signals and/or power between said blade and a wire within said plug housing, each blade further including a second portion to conduct signals and/or power between said blade and a contact within the jack and a third portion to conduct signals and/or power between said blade and the contact within the jack, characterized by a first electrical resistance value through said blade between said second portion and said first portion being greater by at least 5% as compared to a second electrical resistance value through said blade between said third portion and said first portion. ### Claim 2 (depends on 1) The RJ plug according to claim 1, wherein said second portion of said blade is closer to said nose of said plug housing, as compared to said third portion of said blade. ### Claim 3 (depends on 2) The RJ plug according to claim 2, wherein said resistance value through said blade between said second portion and said first portion is increased at areas of said second portion nearer said nose of said plug housing as compared to areas of said second portion more remote from said nose of said plug housing. ### Claim 4 (depends on 1) The RJ plug according to claim 1, wherein said second portion is positioned to be the final portion of said blade to make an electrical connection to the contact within the jack when said RJ plug is being unmated from the jack. ### Claim 5 (depends on 4) The RJ plug according to claim 4, wherein said third portion is positioned to be the portion of said blade making an electrical connection to the contact within the jack while said RJ plug is mated within the jack. ### Claim 6 (depends on 1) The RJ plug according to claim 1, wherein said second portion is position to be the initial portion of said blade to make an electrical connection to the contact within the jack when said RJ plug is being mated to the jack. ### Claim 7 (depends on 1) The RJ plug according to claim 1, wherein said plug housing is formed of a non-conductive dielectric material. ### Claim 8 (depends on 1) The RJ plug according to claim 1, wherein said plug housing conforms to a standard RJ45 configuration. ### Claim 9 (depends on 1) The RJ plug according to claim 1, wherein said plurality of channels is formed by exactly eight channels, and said plurality of blades is formed by exactly eight blades, with one blade in each channel. ### Claim 10 A RJ plug comprising: a plug housing; a nose formed on said plug housing, adapted to be inserted into a jack; a latch on a first side of said plug housing, said latch being resiliently deflectable and adapted to engage with a structure within the jack to hold said plug housing within the jack; a plurality of channels formed in a second side of said plug housing, opposite to said first side; and a plurality of blades held within said plurality of channels, with one blade in each channel, wherein each blade is formed of a conductive material and includes a first portion to conduct electrical signals and/or power between said blade and a wire within said plug housing, each blade further including a second portion to conduct signals and/or power between said blade and a contact within the jack and a third portion to conduct signals and/or power between said blade and the contact within the jack, characterized by said second portion of said blade being formed of a first conductive material and said third portion of said blade being formed of a second conductive material, different from said first conductive material. ### Claim 11 (depends on 10) The RJ plug according to claim 10, wherein said second portion of said blade is closer to said nose of said plug housing, as compared to said third portion of said blade. ### Claim 12 (depends on 10) The RJ plug according to claim 10, wherein said second conductive material includes a coating and said third conductive material does not include said coating. ### Claim 13 (depends on 12) The RJ plug according to claim 12, wherein said coating includes at least one of carbon or graphite. ### Claim 14 (depends on 10) The RJ plug according to claim 10, wherein said second conductive material has a higher electrical resistance per unit volume as compared to an electrical resistance per same unit volume of said third conductive material by at least 5%. ### Claim 15 (depends on 14) The RJ plug according to claim 14, wherein a resistance value through said blade between said second portion and said first portion is increased at areas of said second portion nearer said nose of said plug housing as compared to areas of said second portion more remote from said nose of said plug housing. ### Claim 16 (depends on 10) The RJ plug according to claim 10, wherein said second portion is positioned to be the final portion of said blade to make an electrical connection to the contact within the jack when said RJ plug is being unmated from the jack. ### Claim 17 (depends on 16) The RJ plug according to claim 16, wherein said third portion is positioned to be the portion of said blade making an electrical connection to the contact within the jack while said RJ plug is mated within the jack. ### Claim 18 A patch cord comprising: a first plug housing; a second plug housing; a twisted pair cable connecting said first plug housing to said second plug housing; a first nose formed on said first plug housing, adapted to be inserted into a first jack; a first latch on a first side of said first plug housing, said latch being resiliently deflectable and adapted to engage with a structure within the first jack to hold said first plug housing within the first jack; a first plurality of channels formed in a second side of said first plug housing, opposite to said first side; a first plurality of blades held within said first plurality of channels, with one blade in each channel, wherein each blade is formed of a conductive material and includes a first portion to conduct electrical signals and/or power between said blade and a wire within said twisted pair cable, each blade further including a second portion to conduct signals and/or power between said blade and a contact within the first jack and a third portion to conduct signals and/or power between said blade and the contact within the first jack, characterized by a first electrical resistance value through said blade between said second portion and said first portion being greater than a second electrical resistance value through said blade between said second portion and said first portion by at least 5%; a second nose formed on said second plug housing, adapted to be inserted into a second jack; a second latch on a first side of said second plug housing, said latch being resiliently deflectable and adapted to engage with a structure within the second jack to hold said second plug housing within the second jack; a second plurality of channels formed in a second side of said second plug housing, opposite to said first side; and a second plurality of blades held within said second plurality of channels, with one blade in each channel, wherein each blade is formed of a conductive material and includes a first portion to conduct electrical signals and/or power between said blade and a wire within said twisted pair cable, each blade further including a second portion to conduct signals and/or power between said blade and a contact within the second jack and a third portion to conduct signals and/or power between said blade and the contact within the second jack, characterized by a first electrical resistance value through said blade between said second portion and said first portion being greater than a second electrical resistance value through said blade between said second portion and said first portion by at least 5%. ### Claim 19 (depends on 18) The RJ plug according to claim 18, wherein said second portion is positioned to be the final portion of said blade to make an electrical connection to the contact within the jack when said first or second RJ plug is being unmated from the first or second jack, respectively. ### Claim 20 (depends on 19) The RJ plug according to claim 19, wherein said third portion is positioned to be the portion of said blade making an electrical connection to the contact within the jack while said first or second RJ plug is mated within the first or second jack, respectively.