Abstract

The invention relates to a motor vehicle vacuum pump comprising a pump housing surface on which a noise absorption cap is mounted, said cap defining a noise damping volume.

IPC Classes  ?

• F04C 29/06 - Silencing
• F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
• F01C 21/10 - Outer members for co-operation with rotary pistonsCasings
• F04C 25/02 - Adaptations for special use of pumps for elastic fluids for producing high vacuum

Abstract

The invention relates to a vacuum pump designed as a mono-vane cell pump, comprising a stator ring with windings, a rotor and a vane which divides a working chamber formed between the stator and a rotor into working cells having different volumes. Inside the stator ring, a magnetic ring with a running ring, on which the vane is securely connected on one side, is rotationally mounted with respect to the rotor.

IPC Classes  ?

• F04C 2/32 - Rotary-piston machines or pumps having the characteristics covered by two or more of groups , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in group and relative reciprocation between the co-operating members