Abstract: The invention relates to a door comprising a leaf that is movable between an open position and a closed position, a guiding element which is fixed to the door leaf, interacts with a guide rail, and directs the movement of the door leaf, and a locking device that is movable between a released position in which said locking device releases movement of the door leaf and a locked position in which said locking device counteracts movement of the door leaf. The locking device is provided with a locking element which stops at a contact surface of the guide rail when said locking device is moved into the locked position.

Abstract: In a particle filter for exhaust gases of internal combustion engines, particularly Diesel engines, including a filter body with filter pockets which are formed from sinter metal sheets and are wedge-shaped with an opening at the blunt end and edges formed by converging pocket side walls and arranged adjacent one another such that, between adjacent filter pockets, corresponding opposite spaces are formed with openings facing in a direction opposite to the openings at the blunt end, the filter pockets side walls are spaced from one another by widening means extending along at least an edge of the filter pockets so as to increase the width of the space between the side walls of the filter pockets.

Abstract: The invention relates to a door comprising a leaf that is movable between an open position and a closed position, a guiding element which is fixed to the door leaf, interacts with a guide rail, and directs the movement of the door leaf, and a locking device that is movable between a released position in which said locking device releases movement of the door leaf and a locked position in which said locking device counteracts movement of the door leaf. The locking device is provided with a locking element which stops at a contact surface of the guide rail when said locking device is moved into the locked position.

Abstract: In a particle filter for exhaust gases of internal combustion engines, particularly Diesel engines, including a filter body with filter pockets which are formed from sinter metal sheets and are wedge-shaped with an opening at the blunt end and edges formed by converging pocket side walls and arranged adjacent one another such that, between adjacent filter pockets, corresponding opposite spaces are formed with openings facing in a direction opposite to the openings at the blunt end, the filter pockets side walls are spaced from one another by widening means extending along at least an edge of the filter pockets so as to increase the width of the space between the side walls of the filter pockets.

Abstract: To simplify the fabrication of the housing of an automatic door closing device with hydraulic damping, it is proposed to configure the housing as a tubular hollow cylinder 106 on which, externally, by means of one or more compactly superimposed covering elements 102, a bypass valve 121 is formed.

Abstract: A double-winged door spring is biased for closing with a mechanism for damping of the closure movement and includes a closure sequence control, particularly of a fire-resistant door, in which the damping of the movable door portion is accomplished through a hydraulic damping element with throttled overflow. The hydraulic damping element includes two oppositely controlled pressure chambers defined by a double-acting piston and a valve disposed in the overflow conduit connecting the two pressure chambers, the valve being actuated directly or indirectly through the stationary door portion. By the valve being disposed in the overflow conduit, actuation of the movable door portion can be inhibited until the stationary door portion is closed.