Back to results
US 9,429,159 B2Granted
Pump
AssigneeHella KGaA Hueck & Co.
InventorsIngo Geue, Theodor Hüser, Dietmar Rech, Thomas Valeiras Fernandez
Life of this patent
Estimating the term…
Abstract
A pump includes a pump chamber in which a rotor with gates is supported so that it can rotate, an electric motor for driving the rotor, a muffler that encloses a volume in the area of the pump chamber, wherein the volume is in active connection with an outlet port and a front muffler that is arranged within the muffler. To improve the service life and reliability of the pump in a vehicle with minimal installation expense, it is proposed that a filter is integrated into the front muffler.
Claims7
A pump, comprising:
- a pump chamber,
- a rotor with gates supported in said pump chamber so that said rotor can rotate,
- an electric motor operable for driving the rotor,
- a muffler that encloses a volume in the area of the pump chamber, wherein the volume is in active connection with an outlet port,
- a front muffler that is arranged within the muffler,
- a filter integrated into the front muffler,
- wherein the front muffler is formed in a ring with a conical frustum-shaped lateral surface molded on the inside, and
- wherein the filter is fastened in an annular groove formed on an end of the lateral surface with a smaller diameter.
5 more elements
A pump, comprising:
- a pump chamber,
- a rotor with gates supported in said pump chamber so that said rotor can rotate,
- an electric motor operable for driving the rotor,
- a muffler that encloses a volume in the area of the pump chamber, wherein the volume is in active connection with an outlet port,
- a front muffler that is arranged within the muffler,
- a filter integrated into the front muffler, and
- wherein the front muffler is held in a clamping manner on an annular web of the muffler.
4 more elements
Dependencies are inferred from the claim text.