Abstract: A valve for controlling a fluid flow, in particular for crankcase venting of an internal combustion engine, including a base body (37), a valve body (22) and a biasing means (23), the base body (37) having a valve side (45) and an opposite side (46) situated opposite the valve side (45), a part of the valve body (22) protruding through an opening (47) situated in the base body (37), the biasing means (28), in particular a compression spring, being arranged between the opposite side (46) of the base body (37) and the valve body (22) and supported against the opposite side of the base body (37).

Abstract: A filter device having a filter element arranged in a filter housing with a housing port closed by a housing cover with a housing ring. A medium to be purified is supplied to the filter element through an inlet in the filter housing. On the discharge side of the filter element, purified medium is discharged through an outlet in the filter housing. A pressure relief valve is integrated into the housing cover and is subjected to the pressure on the inlet side of the filter element. The housing cover is constructed in two parts and includes an inside cover and an outside cover. The pressure relief valve is mounted in the inside cover, which closes the housing port. A discharge path for discharging medium exhausted from the filter housing through the pressure relief valve is formed between the inside cover and the outside cover.

Abstract: A filter device having a filter element arranged in a filter housing with a housing port closed by a housing cover with a housing ring. A medium to be purified is supplied to the filter element through an inlet in the filter housing. On the discharge side of the filter element, purified medium is discharged through an outlet in the filter housing. A pressure relief valve is integrated into the housing cover and is subjected to the pressure on the inlet side of the filter element. The housing cover is constructed in two parts and includes an inside cover and an outside cover. The pressure relief valve is mounted in the inside cover, which closes the housing port. A discharge path for discharging medium exhausted from the filter housing through the pressure relief valve is formed between the inside cover and the outside cover.

Abstract: A filter device having a filter element arranged in a filter housing that can be sealed by a housing lid with a sealing ring. The medium to be filtered is supplied to the filter element through an inlet opening in the filter housing. On the filtered side of the filter element, the filtered medium is discharged through an outlet opening in the filter housing. The housing lid is constructed in two parts and includes an inner lid and an outer lid. The inner lid can be inserted into a housing opening, with the sealing ring arranged between the inner lid and the wall of the housing opening. The outer lid covers the housing opening and is connected with the wall of the housing opening by a locking mechanism.

Abstract: A method and apparatus for monitoring service-intensive replaceable parts in an assembly in which information regarding a replaceable part (1), such as specifications, physical dimensions, physical properties, functions and/or other data for the replaceable part, is stored on a suitable memory component (5) in and/or on the replaceable part (1). The stored data is read with a reading device at a predetermined time or at predetermined time intervals and transmitted to an evaluation unit. The read data can be compared in the evaluation unit with preset data and, after evaluating the results of the comparison of the data, an appropriate change in the replaceable part or in the operation of the assembly may or may not be carried out.

Abstract: A filter has a filter housing and a receptacle chamber in the filter housing into which a filter element is insertable. The filter housing has a housing cover for opening and closing an opening of the receptacle chamber. The housing cover is situated in an area of the filter housing between the oncoming flow side and the outgoing flow side of the filter element.

Abstract: A liquid filter, especially for oil of an internal combustion engine, with a bypass valve including a valve body 20 and a valve seat 21 integrated in an end plate 32 of the filter insert. A spring 22, which urges the bypass valve closed, is mounted in a support member 24 attached to the housing. Thus, parts of the bypass valve subject to wear and soiling can be replaced each time filter element 18 is replaced, and reliable operation of the bypass valve is assured throughout the life of the filter. The filter insert can be designed free of metal for easy disposability. The filter cartridge can also be used with known filter arrangements in which a permanent valve body is housed in the support member 24. When the filter element of the invention is used, this permanent valve body stays in the support member and functions as an intermediate piece 35, which transmits force between spring 22 and valve body 20. The valve function is assumed by new valve body 20 engaging valve seat 21.

Abstract: A multicell cyclone with a plurality of cyclone cells and a method for the production thereof, in which the cyclone cells of the multicell cyclone are combined into groups from which deposited particles are cleaned out by vacuum suction through channel structures. This permits better control of the discharge of separated particles. Vacuum suction of the separated particles can be effected, for instance, via openings (19) which are jointly provided for the group (21) of cyclone cells. The group of cyclone cells can furthermore be produced as a module, which can, for instance, be assembled from two parts (12, 13) in which like structural elements of a group of cyclones are combined into one respective part. This makes it possible to optimize the separation result with little structural complexity and at low production cost.

Abstract: A method and apparatus for monitoring service-intensive replaceable parts in an assembly in which information regarding a replaceable part (1), such as specifications, physical dimensions, physical properties, functions and/or other data for the replaceable part, is stored on a suitable memory component (5) in and/or on the replaceable part (1). The stored data is read with a reading device at a predetermined time or at predetermined time intervals and transmitted to an evaluation unit. The read data can be compared in the evaluation unit with preset data and, after evaluating the results of the comparison of the data, an appropriate change in the replaceable part or in the operation of the assembly may or may not be carried out.

Abstract: A liquid filter, especially for oil of an internal combustion engine, with a bypass valve including a valve body 20 and a valve seat 21 integrated in an end plate 32 of the filter insert. A spring 22, which urges the bypass valve closed, is mounted in a support member 24 attached to the housing. Thus, parts of the bypass valve subject to wear and soiling can be replaced each time filter element 18 is replaced, and reliable operation of the bypass valve is assured throughout the life of the filter. The filter insert can be designed free of metal for easy disposability. The filter cartridge can also be used with known filter arrangements in which a permanent valve body is housed in the support member 24. When the filter element of the invention is used, this permanent valve body stays in the support member and functions as an intermediate piece 35, which transmits force between spring 22 and valve body 20. The valve function is assumed by new valve body 20 engaging valve seat 21.