Filter for cooling air stream of electric commutator motor for household device
AssigneeVorwerk & Co. Interholding GmbH
InventorsHeinz-Gerhard Krumm, Horst Neugart
Life of this patent
Estimating the term…
Abstract
A filter for a cooling air stream of an electric commutator motor for a household device has a passage into which a cooling air stream flows after passing an electric commutator motor, and a filtering member composed of an electrostatically charged material which coats the passage partially or completely.
Claims13
A filter for a cooling air stream of an electric commutator motor for a household device, comprising means forming a passage into which a cooling air stream flows in a predetermined direction after passing an electric commutator motor;
- and a filtering member composed of an electrostatically charged material which coats at least a portion of said passage, said electrostatically charged material having a section which extends substantially transverse to said direction, so that the cooling air flow impinges against said section.
A filter for a cooling air stream of an electric commutator for a household device, comprising means forming a passage into which a cooling air stream flows in a predetermined direction after passing an electric commutator motor;
- and a filtering member composed of an electrostatically charged material which coats at least a portion of said passage, said electrostatically charged material having a section extending in said direction, so that cooling air stream flows substantially along said section, said electrostatically charged material also having a further section which extends substantially transverse to said direction, so that the cooling air stream not only flows along said first-mentioned section, but also impinges against said further section.
A filter for a cooling air stream of an electric commutator motor for a household device, comprising means forming a passage into which a cooling air stream flows after passing an electric commutator motor;
- and a filtering member composed of an electrostatically charged material which coats at least a portion of said passage, said passage being substantially closed so that the cooling air stream, upon passing said electrostatically charged material, again circulates in said passage past the electric commutator motor.
Dependencies are inferred from the claim text.