Vehicles with differential speed steering

US4553620A · kind A · utility

Assignee

• Linde GmbH · DE

Inventors

• Erich Eckhardt
• Karl R. Schmitt · Rockford, US
• Wolfgang Grone · Aschaffenburg, DE
• Binio Binev · Haibach, DE

Key dates

• Filing date: Nov 10, 1983
• Grant date: Nov 19, 1985
• Expiry date: Nov 10, 2003

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B62D11/10
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

Vehicles with differential speed steering are provided having a hydrostatic transmission on each side for driving the drive wheels on that side, a spring-loaded servo piston operating a final control element of each transmission, at least one control pressure pick-off connected to the operating cylinders for controlling forward and backward travel, a pair of second control pressure pick-offs connected with the operating cylinders for controlling turning, a manually controlled pilot valve in a connection between the second control pick-offs and the operating cylinder and a control pressure reducing valve acting on the second control pressure pick-offs reducing the pressure to prescribed characteristics independently of the incoming pressure with respect to the actuation path.