Check valve for ventilation or outlet openings of compressed air apparatuses in vehicles

US9909675B2 · kind B2 · utility

Assignee

• KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH · DE

Inventors

• Jan Grebe · Starnberg, DE
• Thomas Bemetz · Munich, DE
• Laszlo Menyhart · Gyál, HU
• Gabor Fojtyik · Szigetszentmiklós, HU

Key dates

• Filing date: Jan 24, 2014
• Grant date: Mar 6, 2018
• Expiry date: May 6, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7904
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A ventilation or check valve for ventilation or outlet openings of compressed air apparatuses of vehicles, includes at least one diaphragm disk which is made from flexible material, is held with a central region in a bore of a valve housing and is prestressed with a radially outer region against a valve seat on the valve housing, to lift up from the valve seat in a pressure-induced manner in the case of a pressure gradient between an inlet space and an outlet space or atmosphere and to open a flow cross section between the inlet space and the outlet space or atmosphere, in which, as viewed in the circumferential direction of the diaphragm disk, a plurality of hold-downs which are arranged at a circumferential spacing from one another and hold down the radially outer region of the diaphragm disk locally against the valve seat are provided on the valve housing.