USPTO Patent Granted for Working Vehicle Electric System

ChangeBridge: Patent Grants - Power Supply (H02J)

Published March 24th, 2026

Detected March 25th, 2026

Summary

The USPTO has granted a patent (US12583324B2) to J.C. Bamford Excavators Limited for a working vehicle electric system. The system includes an electric storage device, a traction motor, and a hydraulic system controlled to manage energy regeneration and storage based on the device's state of charge.

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What changed

The United States Patent and Trademark Office (USPTO) has granted patent US12583324B2 for a working vehicle electric system. The patent, assigned to J.C. Bamford Excavators Limited, details a system that integrates an electric storage device with a hydraulic system. The control system is designed to induce additional load on the hydraulic system by using a load motor to drive a hydraulic pump when the electric storage device's state of charge reaches a predetermined threshold, thereby managing energy generation during braking and potentially optimizing power usage.

This patent grant signifies a new technological development in the field of electric working vehicles. While it does not impose new regulatory obligations on manufacturers, it represents an innovation that could influence future product designs and industry standards. Compliance officers in the automotive and heavy machinery sectors should be aware of this patent as it pertains to energy management systems in electric vehicles.

Source document (simplified)

← USPTO Patent Grants

Working vehicle

Grant US12583324B2 Kind: B2 Mar 24, 2026

Assignee

J.C. Bamford Excavators Limited

Inventors

Stephen De Caen, Jonathan Christopher Boustred

Abstract

A working vehicle includes an electric storage device; a traction motor configured to propel the working vehicle and to generate electrical energy when braking; a hydraulic system including a hydraulic pump driven by a load motor, a hydraulic actuator and a control valve; and a control system. The control system is configured to determine a state of charge of the electric storage device; induce additional load on the hydraulic system by directing the load motor to drive the hydraulic pump and actuating the control valve to direct flow of hydraulic fluid to the hydraulic actuator when the state of charge is at or above a predetermined threshold.

CPC Classifications

B60L 1/003 B60L 7/18 B60L 50/60 B60L 58/15 B60L 2200/40 B60L 2240/54 B60L 7/26 B60L 7/10 B66F 11/046 B66F 17/006 F15B 13/02 F15B 15/18 B60W 2510/244 B60W 10/08 B60W 10/26 B60W 10/30 B60W 20/14 E02F 9/2083 E02F 9/2091 E02F 9/2217 H02J 7/00302 H02J 7/0048