Abstract: A ball joint for a wheel suspension in a vehicle is disclosed. The ball joint includes a bearing shell, a ball, and a housing. The ball is supported in the bearing shell, with the shell being subdivided by slots into lip elements. The slots are preferably arranged in the bearing shell from a middle part and up to an upper rim. The lip elements may be bent outwards at a compression groove to admit the ball when it is introduced into the shell.

Abstract: A square shaped sub-frame for a vehicle manufactured from an especially designed aluminium profile (1). The profile comprises a first and a second channel (11, 13) separated by an intervening channel (12). Said first and second channels (11, 13) are separated in localized areas by removing wall material from the intervening channel (12). Then, the profile (1) is bent into a U-shaped or square, closed frame, said second channel (13) defining a load carrying frame. The first channel (11) is machined into mounting brackets for control arms etc.

Abstract: A bail joint for a wheel suspension in a vehicle, said bail joint including a bearing shell (3), a bail (2) and housing (4). The ball is supported in the bearing shell; said bearing shell (3) being subdivided into lip elements (9) by slots (8). The slots (8) are arranged in the bearing shell (3) from its middle part and up to its upper rim. The lip elements (9) may be bent outwards at a compression groove (10) to admit the bail (2) when it is introduced into the shell.

Abstract: A press tool for closed die forging a blank into a product is described. Said tool including upper and lower centre members and first and second side members. Said members define a cavity with the form of the product. In a two-step closed die forge process the blank is placed between said upper and lower centre members. The first and second side members are forced against the blank horizontally upsetting the outer edges of the blank. Then, the centre members are forced vertically into the blank, until the material in the blank has substantially filled the cavity.

Abstract: A square shaped sub-frame for a vehicle manufactured from an especially designed aluminium profile (1). The profile comprises a first and a second channel (11, 13) separated by an intervening channel (12). Said first and second channels (11, 13) are separated in localized areas by removing wall material from the intervening channel (12). Then, the profile (1) is bent into a U-shaped or square, closed frame, said second channel (13) defining a load carrying frame. The first channel (11) is machined into mounting brackets for control arms etc.

Abstract: The present invention involves a control arm for use in the wheel suspension of a car. The arm is produced from a hollow, closed profile of high strength, extruded aluminium. The arm is produced in a wholly cold process, similar to the one used to produce aluminium fenders, involving stretch-bending, pressing, cutting and punching of the aluminium profile into the desired shape. The arm has a closed and smooth shape; in addition, it has a rib on its outer surface for fending off water and snow.