Melting safety device for gas system of hydropneumatic pressure accumulators

US4922944A · kind A · utility

Assignee

• HYDAC TECHNOLOGY GMBH · DE

Inventors

• Matthias Mueller · Harsefeld, DE
• Herbert Baltes · Losheim, DE

Key dates

• Filing date: Apr 10, 1989
• Grant date: May 8, 1990
• Expiry date: Apr 10, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/1963
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A melting safety device for discharging gas from the gas system of a hydropneumatic pressure reservoir or accumulator has a blocking element of a material which melts when exposed to an undue temperature increase. A normally closed valve can be opened by a control member which is prebiased for controlled movement by the force of a power drive. The blocking element is a mechanical blocking member which blocks the controlled movement of the control member prior to its melting, but permits the controlled movement of the control member upon melting.