Abstract: A hot air sealing arrangement for sealing between an inner surface of an exhaust duct conveying hot combustion products and an outer surface of a heat exchanger disposed within the exhaust duct includes an inner receiver attachable to the outer surface of the heat exchanger, an outer receiver attachable to the inner surface of the exhaust duct, and a seal having an outer bead engageable with the outer receiver for rotary movement therein and an inner bead engageable with the inner receiver for sliding movement therein. The seal further includes a connecting sheet between the outer bead and the inner bead.

Abstract: A door lock of a motor vehicle having a premounted lock subassembly which is arranged in a hollow space of a vehicle door. The door lock is fastened on the rearward frontal area of the vehicle door and has a lock support on which a latch as well as a detent pawl, which locks the latch in the closed position, are adjustably fastened. The door has a wall area which bounds the hollow space from the occupant compartment and has a passage opening through which a transmission element connected with the lock subassembly extends to a lock operating element arranged outside the hollow space. An area of the lock subassembly covers the passage opening. The transmission element, which is connected with the lock operating element can be connected through the passage opening with an assigned connecting element of the lock subassembly after the locking subassembly is mounted to the door.

Abstract: A method for reducing the incidence of piston pin failure by providing a retainer assembly for piston pin plugs such that the plugs cannot be removed or shaken lose during operation. A plastic rod is inserted into the piston pin, and the rod is ultrasonically welded to the stems of mushroom-shaped plastic piston plugs such that the plugs cover the open ends of the pin and are held in place by the cooperation of structure between the plugs and the rod. In an alternate embodiment, the stem of each pin plug is hollow and a respective internally threaded brass insert is disposed in the stem and ultrasonically welded therein. An externally threaded rod is then engaged with the two internally threaded inserts to hold the plugs on the piston pin.