Abstract: An openable roof assembly, especially for a sun-roof of an automotive vehicle has a single hinge mounting the translucent panel along one longitudinal edge to the frame and a single closure element at the opposite longitudinal edge of the panel so that the closure element and the hinge are provided along the surface centerline of the panel. In this way, indifferent zones between hinges are avoided and a uniform distribution of the closing force to the panel can be ensured.

Abstract: A roof vent, sun roof or like system has a tiltable panel which is hingedly mounted in a frame around a roof opening of an automotive vehicle. The assmebly includes a rectilinear guide along which a slider is displaceable to straighten a bent spring bar connected to the panel and thereby allow the panel to be drawn into sealing closure with the frame.

Abstract: A motor-vehicle door lock has a lock bolt defining an axis and normally secured to the doorpost. A locking fork normally secured to the door edge can engage this lock bolt to retain the door against the doorpost. The bolt is formed of a rigid axially extending metal core and at least one axially deformable synthetic-resin body on the core. The core has a plurality of annular ridges having outer surfaces and defining a plurality of outwardly open annular grooves and the body fills these grooves and projects radially therefrom beyond the outer surface of the ridges. The ridges and grooves may be separate and annular, or may be the turns of a helical screwthread formation.