Abstract: The invention relates to a liquid filter, for example an oil filter for cleaning lubricating oil, especially for use in internal combustion engines of motor vehicles. A ring-shaped filter insert separates an unclean side from a clean side in the interior of the liquid filter. A metal filter housing comprises a first flange with which the liquid filter can be screwed to a component via a screw connection, said component having an inlet for uncleaned liquid, an outlet for cleaned liquid and a relatively pressureless idle duct. The first flange contains an axially acting outer seal that includes inlet, outlet and idle duct, and a carrier receiving compartment encircled by the outer seal.

Abstract: The invention relates to a liquid filter (1), for example an oil filter for cleaning lubricating oil, especially for use in internal combustion engines of motor vehicles. A ring-shaped filter insert separates an unclean side from a clean side in the interior of the liquid filter. A metal filter housing (2) comprises a first flange (3) with which the liquid filter (1) can be screwed to a component via a screw connection, said component having an inlet for uncleaned liquid, an outlet for cleaned liquid and a relatively pressureless idle duct. The first flange (3) contains an axially acting outer seal (24) that includes inlet, outlet and idle duct, and a carrier receiving compartment (22) encircled by the outer seal (24).

Abstract: An oil filter 1 for an internal combustion engine includes a filter body 3 and a plastic filter housing 2. Integrally formed within the filter housing, a safety wall 7 is radially fitted around the feed channel 4 and the return channel 5 creating a collecting space 6 that surrounds both channels. If seal leaks occur when the device is connected to a flange, e.g. of an engine block, the leaked oil will accumulate in the collecting space.

Abstract: Disclosed is a heat exchanger comprising superimposed heat exchanger plates (, 2'), a collar (4), fluid connectors (12), connecting holes (5) and fastening means which present at least one passage (15) comprised of holes (6, 27) in alignment towards each other in the plates (2, 2'), through which a tension rod (16) can be passed. One end of the tension rod (16) rests upon the connecting plate (26) or the plate (2, 2') adjacent thereto. In the hole (6, 27) alignment area, each thermal plate is tight relative to the adjacent plate (2, 2').