Pressure driven rotary drive

US5219393A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Jorg Niederstadt · Schramberg, DE
• Ralf Huber · Brigachtal, DE

Key dates

• Filing date: Mar 31, 1992
• Grant date: Jun 15, 1993
• Expiry date: Mar 31, 2012

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01C11/002
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A hydraulically operated rotary drive includes a housing which is closed in hydraulically tight manner by flat covers and can be connected to a source of pressure fluid, a rotatable shaft extending through the covers out of the housing and a belt which is arranged at least in part within the housing with the formation of movable pressure chambers and is operatively connected to the shaft. In order to create a rotary drive which permits any desired extension to external structural groups as well as a modular extension to a plurality of rotary drives, it is proposed that axially extending channels (2, 2') for receiving and forwarding the pressure fluid to the pressure chambers and electrical connections be integrated within the shaft and that the shaft (3) be provided on both axial ends with coupling elements for the coupling outside the housing of mechanical and/or electrical attachment modules which can be coupled to the rotary movement.