Leveling system for lift device

US10858230B2 · kind B2 · utility

Assignee

• OSHKOSH CORPORATION · US

Inventors

• Eric Hackenberg · Oshkosh, US
• Jihong Hao · Greencastle, US
• Harish Sivasubramanian · Oshkosh, US
• Marcel Amsallen · Kalamazoo, US

Key dates

• Filing date: Nov 4, 2019
• Grant date: Dec 8, 2020
• Expiry date: Nov 4, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2800/914
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A lift device includes a chassis, a first actuator coupled to the chassis, a second actuator coupled to the chassis, a third actuator coupled to the chassis, a fourth actuator coupled to the chassis, and a fluid circuit. The fluid circuit is configured to facilitate selectively fluidly coupling the first actuator, the second actuator, the third actuator, and the fourth actuator in at least four different configurations where, in each of the at least four different configurations, two of the first actuator, the second actuator, the third actuator, and the fourth actuator are fluidly coupled together while the other two of the first actuator, the second actuator, the third actuator, and the fourth actuator are fluidly decoupled.