Abstract: The filter element of a filter has an internal face, an external face, a filtering mesh, two concentric circular inner and outer edges between which the filtering mesh extends, and radial ribs provided on the internal face. The radial ribs extend between the concentric edges and are distributed circumferentially in order to form sectors on the internal face. The filter element is configured to be assembled against a corresponding filter element so that the internal face faces the corresponding filter element. At least some of the sectors have a reinforcing rib connecting a radial rib to the outer edge, the reinforcing rib having a portion that is inclined, when viewed in the radial plane, with respect to the radial rib and to the outer edge.

Abstract: The filter element of a filter has an internal face, an external face, a filtering mesh, two concentric circular inner and outer edges between which the filtering mesh extends, and radial ribs provided on the internal face. The radial ribs extend between the concentric edges and are distributed circumferentially in order to form sectors on the internal face. The filter element is configured to be assembled against a corresponding filter element so that the internal face faces the corresponding filter element. At least some of the sectors have a reinforcing rib connecting a radial rib to the outer edge, the reinforcing rib having a portion that is inclined, when viewed in the radial plane, with respect to the radial rib and to the outer edge.

Abstract: Disclosed is an arrangement of distribution columns that can be used to discharge the declogging fluid from a filter with automatic declogging or backwashing. A stationary divider is arranged coaxially in a stack of filter elements and has distinct ducts, e.g. embodied by fins, the ducts establishing communication between a rotary distributor and groups of passages in the stack that are in alignment along generator lines of the stack.

Abstract: Disclosed is an arrangement of distribution columns that can be used to discharge the declogging fluid from a filter with automatic declogging or backwashing. A stationary divider is arranged coaxially in a stack of filter elements and has distinct ducts, e.g. embodied by fins, the ducts establishing communication between a rotary distributor and groups of passages in the stack that are in alignment along generator lines of the stack.

Abstract: A hydraulic motor with rotating shaft coupled to a piston with alternating rectilinear displacement. The hydraulic motor comprises a casing enclosing a rotating shaft, a piston and an inverter comprising a first sleeve formed as one piece with the piston, a second sleeve, fixed in position, and a distributor mounted so as to rotate in the interior of the second sleeve and conduit and hole elements arranged between the second sleeve and the distributor and means for controlling the rotation of the distributor as a function of the displacement of the first sleeve so as to invert the direction of displacement of the piston.

Abstract: A hydraulic motor with rotating shaft coupled to a piston with alternating rectilinear displacement. The hydraulic motor comprises a casing enclosing a rotating shaft, a piston and an inverter comprising a first sleeve formed as one piece with the piston, a second sleeve, fixed in position, and a distributor mounted so as to rotate in the interior of the second sleeve and conduit and hole elements arranged between the second sleeve and the distributor and means for controlling the rotation of the distributor as a function of the displacement of the first sleeve so as to invert the direction of displacement of the piston.