Suspension for a machine

US7967087B2 · kind B2 · utility

Assignee

• Caterpillar SARL · CH

Inventors

• Mylvaganam Arulraja · Peoria, US
• Michael S. Freberg · Davenport, US
• Leslie L. Weaver, Jr. · Raleigh, US
• Michael C. Layko · Apex, US
• Jeffrey M. Parker · Apex, US
• Michael Bottom · Holly Springs, US

Key dates

• Filing date: Jun 26, 2009
• Grant date: Jun 28, 2011
• Expiry date: Aug 25, 2029

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E02F9/024
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A machine is provided. The machine has a forward direction of travel and includes a frame, at least one lift arm, a first torsion axle assembly, an undercarriage, and an endless track. The lift arm is pivotally attached to the frame. The first torsion axle assembly is attached to the frame and includes a first torsion arm, a first torsion shaft, and a first axle, with the first torsion shaft and the first axle extending from the first torsion arm. The undercarriage is attached to the first torsion axle assembly and the endless track encircles the undercarriage. One of the first torsion shaft and the first axle is attached to the frame and the other of the first torsion shaft and the first axle is attached to the undercarriage. The first torsion arm extends upward from the frame at an angle between 90 and 180 degrees from the forward direction of travel.