Device for producing hot air curtains for door openings in local transit vehicle
AssigneeSiemens Duewag Schienenfahrzeuge GmbH
InventorsKarl-Eberhard Geyer, Alfred Henatsch
Life of this patent
Estimating the term…
Abstract
A device for producing air currents at door openings provided for passing people in local transit vehicles has a unit for forming an air current which forms a barrier against penetration of cold air into a space disposed behind a door opening, the unit being formed so that the air curtain is provided above a bottom end of the door opening and is limited to a height between at least one third and at most half a total height of the door opening so as to prevent penetration of cold air only in a lower zone of the door opening.
Claims12
A device for producing air currents at door openings provided for passing people in local transit vehicles, the device comprising means forming an air curtain which forms a barrier against penetration of cold air into a space disposed behind a door opening, said means being formed so that the air curtain is provided above a bottom end of the door opening and is limited to a height between at least one third and at most half a total height of the door opening, so as to prevent penetration of cold air only in a lower zone of the door opening for passing people.
Dependencies are inferred from the claim text.