Pump unit driven by an electric motor

US9828981B2 · kind B2 · utility

Assignee

• Continental Teves AG & Co. OHG · DE

Inventors

• Stephan Krebs · Eschborn, DE
• Jens Bacher · Frankfurt am Main, DE
• Heinrich Kreh · Florstadt, DE
• Lazar Milisic · Frankfurt, DE
• Michael Jürging · Kelkheim, DE
• Marcel Niepenberg · Heilbad Heiligenstadt, DE
• Jose Gonzalez · Bad Oeynhausen, DE
• Karlheinz Seitz · Lorsch, DE
• Hans-Michael Koppel · Frankfurt, DE
• Falk Petzold · Frankfurt am Main, DE
• Rolf Fellinger · Dreikirchen, DE
• Stefan Imhof · Oberursel, DE
• Thomas Oeffner · Karben, DE
• Paul Wiebe · Weiterstadt, DE
• Manfred Rüffer · Pocking, DE

Key dates

• Filing date: Feb 1, 2013
• Grant date: Nov 28, 2017
• Expiry date: Nov 17, 2034

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B53/102
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a pump unit that can be driven by an electric motor, in particular for providing vacuum for a pneumatic brake booster, including a pump housing that can be closed by a working-chamber cover and at least one elastic displacement element, wherein a working chamber is bounded between the displacement element and the working-chamber cover and wherein inlet valves and outlet valves and inlet channels and outlet channels associated with the valves are associated with the working chamber. According to the invention, in order to reduce noise emissions, devices for reducing a contact surface between the working-chamber cover and the pump housing are provided.