Two-hand safety control mechanism

US4706548A · kind A · utility

Assignee

• Herion-Werke KG

Inventors

• Günter Baldauf · Rommelshausen, DE
• Helmut Ott · Stuttgart, DE

Key dates

• Filing date: Aug 18, 1986
• Grant date: Nov 17, 1987
• Expiry date: Aug 18, 2006

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16P3/22
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A two hand safety control mechanism for a consumer actuated by pressure medium includes a safety valve blocking the supply of pressure medium during a faulty switching and venting the consumer. For maintaining a working position of the consumer, a plurality of control valves are provided which are dynamically self-regulating. By actuating a further control valve, the automatic retention can be cancelled in order to allow the consumer to return in its idle position.