Proportional throttle valve

US8746276B2 · kind B2 · utility

Assignee

• HYDAC FLUIDTECHNIK GMBH · DE

Inventors

• Markus Bill · Eppelborn, DE
• Peter Bruck · Althornbach, DE

Key dates

• Filing date: Mar 10, 2010
• Grant date: Jun 10, 2014
• Expiry date: Mar 10, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7782
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A proportional throttle valve includes a valve piston (2) displaceably guided in the longitudinal direction in a valve housing (3) having a fluid inlet (4) and a fluid outlet (5) and pretensioned by an energy accumulator, in particular in the form a pressure spring, against a stroke stop (6) defining the closure position. A pressure limiting valve (7) is integrated in the proportional throttle valve (1). The side (8) of the valve piston (2) to allow the piston to move away from the stroke stop (6) in opposition to the pretensioning force when a predefinable pressure is exceeded at the fluid inlet (4).