Abstract: For the use of the vacuum die-casting process, it is an essential precondition that the casting process takes place in a circuit sealed off on the outside, so that the undesirable ingress of air is avoided, corresponding safe sealing systems are necessary. The sealing between a casting piston and a suction box is designed in such a way that a long service life of the seal is ensured and a possible risk of accidents is avoided.

Abstract: A device for the blocking of a catch adjustment device for motor vehicle backrests, with adjustable inclination, that are articulated at a seat portion, the catch adjustment device having a catch gear toothing a catch element that may be brought into engagement therewith in various positions of inclination. When the inclination is being adjusted, the catch member lies out of engagement. The device comprises a control element that is sensitive to inertia, and which triggers blocking of the backrest when the catch lock is released. The control element, which is sensitive to inertia, affects a blocking device that can be activated pyrotechnically, and is provided between an area that is firmly attached to the seat and an area firmly attached to the backrest.

Abstract: A motor vehicle seat with a ventilation device having an exhaust channel, the entrance of which connects to an air-permeable contact surface. A porous air-permeable mat is provided adjacent to the contact surface, and an exhaust fan is provided in the exhaust air channel. An intake channel terminates at the mat and has an intake opening. A total air current drawn in by the intake fan and exiting the exhaust channel includes an air current drawn in through the intake opening and an air current drawn in through the contact surface.