# US 2025/0146460 A1 · Fuel Transfer Bypass Tube and System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0146460 A1 - Document ID: US20250146460A1 - Status: Published application - Kind: A1 - Application number: 18/501,249 - Filed: 2023-11-03 - Published: 2025-05-08 - Earliest claimed: 2023-11-03 - Assignees: Ryan Eric Hafso - Inventors: Ryan Eric Hafso - Web page: https://patentgrep.com/patent/US20250146460A1 ## CPC - F02M 37/0017: {related to fuel pipes or their connections, e.g. joints or sealings (F02M55/004 takes precedence)} - F02M 21/00: Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF ## Abstract A fuel transfer bypass tube and system are provided. The fuel transfer bypass system utilizes a fuel bypass tube and a fuel supply pump to provide fuel to an engine without requiring modification to the engine or preexisting system. The fuel transfer bypass system includes multiple fuel lines that draw fuel from a source to pass through a filter and the fuel bypass tube. The fuel bypass tube includes a single monolithic structure able to reliably transfer the fuel under pressure through an inlet port to an outlet port via a channel. The fuel is delivered to the engine through a line secured to the outlet port. Each inlet and outlet port on the bypass tube includes an annular channel that receives O-rings to form a fluid seal with the respective mounting system. The bypass pump draws electrical power from the engine through a connector and an adaptor without any additional modifications. ## Claims ### Claim 1 A fuel transfer bypass tube, comprising: a cylinder formed from a single monolithic member; the cylinder comprises an inlet port at an open first end and an outlet port at an open second end, wherein the open first end is in fluid communication with the open second end via a channel; wherein the inlet port is adapted to engage with an open end of a first line and the outlet port is adapted to engage with an open end of a second line in an in-use configuration; wherein the in-use configuration, a fuel is adapted to transfer from the first line through the cylinder to the second line. ### Claim 2 (depends on 1) The fuel transfer bypass tube of claim 1, wherein the cylinder is configured to be interchangeable with an original engine manufacturer fuel tube. ### Claim 3 (depends on 1) The fuel transfer bypass tube of claim 1, wherein the cylinder is formed by subtractive manufacturing. ### Claim 4 (depends on 2) The fuel transfer bypass tube of claim 2, wherein the inlet port comprises a tapered shoulder having a male plug that extends outward along a longitudinal axis of the cylinder. ### Claim 5 (depends on 4) The fuel transfer bypass tube of claim 4, wherein the outlet port comprises a tapered shoulder having a male plug that extends outward along the longitudinal axis of the cylinder. ### Claim 6 (depends on 5) The fuel transfer bypass tube of claim 5, wherein the inlet port comprises one or more annular channels sized to receive an O-ring therearound, wherein the O-ring is adapted to form a seal between the first line and the inlet port in the in-use configuration. ### Claim 7 (depends on 6) The fuel transfer bypass tube of claim 6, wherein the outlet port comprises one or more annular channels sized to receive an O-ring therearound, wherein the O-ring is adapted to form a seal between the second line and the outlet port in the in-use configuration. ### Claim 8 (depends on 7) The fuel transfer bypass tube of claim 7, wherein the cylinder comprises a longitudinal channel that runs along a longitudinal axis of the cylinder. ### Claim 9 (depends on 8) The fuel transfer bypass tube of claim 8, wherein the longitudinal channel comprises a uniform thickness from the inlet port to the outlet port. ### Claim 10 (depends on 9) The fuel transfer bypass tube of claim 9, wherein the longitudinal channel is centrally positioned when viewed from a cross sectional view taken perpendicular to the longitudinal axis. ### Claim 11 A fuel transfer bypass system, comprising: a fuel transfer pump adapted to transfer fuel from a fuel source via a first fuel supply line; a second fuel supply line that fluidly connects the fuel transfer pump to a fuel transfer bypass tube; wherein the fuel transfer bypass tube comprises: a cylinder having an intake port at a first end and an output port at a second end; wherein the cylinder is formed from a single monolithic member; an electrical adaptor configured to connect with an OEM engine harness to supply power to the fuel transfer pump. ### Claim 12 (depends on 11) A fuel transfer bypass system of claim 11, wherein the cylinder further comprises: an inlet port at an open first end and an outlet port at an open second end, wherein the open first end is in fluid communication with the open second end via a channel; wherein the inlet port is adapted to engage with an open end of a first line and the outlet port is adapted to engage with an open end of a second line in an in-use configuration; wherein the in-use configuration, a fuel is adapted to transfer from the first line through the cylinder to the second line. ### Claim 13 (depends on 12) A fuel transfer bypass system of claim 12, wherein the fuel transfer bypass tube is disposed within an OEM housing. ### Claim 14 (depends on 12) A fuel transfer bypass system of claim 12, wherein a prefilter may be positioned between the fuel source and the fuel pump.