US 11492985

Here's a concise summary of US Patent 11492985, "Off-board fuel regulator for generator engine":

Title: Off-board fuel regulator for generator engine

Assignee: Champion Power Equipment Inc.

Inventors: Mark J. Sarder, Aleko D. Sotiriades, James J. Dehn, Leigh Jenison.

Filing Date: 2020-02-06.

Issue Date: 2022-11-08.

Abstract: A generator and off-board fuel delivery system is disclosed. The generator is free of any pressure regulator and configured to operate on a gaseous fuel supplied from a pressurized fuel source through a gaseous fuel line. A fuel regulator system is located off-board the generator and comprises a first stage and a second stage. The fuel regulator system is configured to regulate the gaseous fuel from the pressurized fuel source to a reduced pressure in the first stage, and then regulate this reduced pressure gaseous fuel down to a desired pressure in the second stage for delivery through the gaseous fuel line to operate the generator.

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Plain-Language Overview of Independent Claims:

• Independent Claim 1: This claim describes a generator and fuel delivery system. The generator itself does not have a pressure regulator and runs on gaseous fuel from a pressurized source. A two-stage fuel regulator system is located away from the generator. The first stage reduces the high pressure of the gaseous fuel to a lower pressure, and the second stage further reduces this already lowered pressure to a specific, desired pressure for the generator to operate.

• Independent Claim 11: This claim is similar to Claim 1, focusing on a generator with an engine that operates on gaseous fuel from an off-board pressurized source. It explicitly states that the off-board two-stage fuel regulator system reduces the initial gaseous fuel pressure to a "first reduced pressure" in the first stage, and then further reduces it to a "second reduced pressure" in the second stage. This "second reduced pressure" is the final pressure at which the fuel is delivered to the generator's engine.

• Independent Claim 16: This claim describes a dual fuel generator and fuel delivery system. The generator can run on both a liquid fuel (from a liquid fuel source via a liquid fuel line) and a gaseous fuel (from a pressurized fuel source via a gaseous fuel line). It includes an off-board fuel regulator system with a primary pressure regulator (first stage) that connects to the pressurized fuel source's service valve and reduces the fuel pressure to a "first reduced pressure." A secondary pressure regulator (second stage) is coupled to the primary regulator and further reduces the gaseous fuel pressure from the "first reduced pressure" to a "second reduced pressure," which is the final pressure supplied to the dual fuel generator for its operation.

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CAFC 2026 Dockets:
A direct search of the CAFC 2026 dockets for US11492985 did not return specific litigation cases for the year 2026. While general information about the Federal Circuit Court of Appeals' case information and scheduled cases is available, there is no authoritative information from these searches indicating active litigation involving US11492985 in CAFC dockets for 2026. The Google Patents page for US11492985 does indicate "Family has litigation" and lists several US district court cases and one PTAB case (IPR2025-01272) but does not specifically mention CAFC cases for 2026.