Abstract: A belt tensioner for a safety belt system has a drive unit and a power transmission element, which engages on a drive element when the drive unit is activated. The power transmission element is a non-rigid medium.

Abstract: A belt tensioner for a safety belt system includes a pinion (16) rotatably mounted in a housing (12), a drive unit (26), and a toothed rack (18) whose toothing (20) is directly engaged or enters into direct engagement with the pinion (16) and which can be driven by means of the drive unit (26). The toothed rack (18) has the shape of a circular arc and moves on a circular path (K) upon activation of the drive unit (26).

Abstract: A belt tensioner for a safety belt system includes a pinion (16) rotatably mounted in a housing (12), a drive unit (26), and a toothed rack (18) whose toothing (20) is directly engaged or enters into direct engagement with the pinion (16) and which can be driven by means of the drive unit (26). The toothed rack (18) has the shape of a circular arc and moves on a circular path (K) upon activation of the drive unit (26).

Abstract: A rotary drive for a belt tensioner includes a housing, a pinion rotatably mounted therein, and at least one driving gear coupled to the pinion, the driving gear being mounted in the housing and being adapted to be driven by pressurized gas introduced into a pressure chamber. Formed in the driving gear is a cavity having a substantially radially extending wall which, in the installed state, is opposite to a protrusion which projects into the cavity and is rigidly connected to the housing, the wall of the cavity and the protrusion forming part of a wall of the pressure chamber.

Abstract: A belt tensioner for a safety belt system has a drive unit and a power transmission element, which engages on a drive element when the drive unit is activated. The power transmission element is a non-rigid medium.

Abstract: A rotary drive for a belt tensioner includes a housing, a pinion rotatably mounted therein, and at least one driving gear coupled to the pinion, the driving gear being mounted in the housing and being adapted to be driven by pressurized gas introduced into a pressure chamber. Formed in the driving gear is a cavity having a substantially radially extending wall which, in the installed state, is opposite to a protrusion which projects into the cavity and is rigidly connected to the housing, the wall of the cavity and the protrusion forming part of a wall of the pressure chamber.

Abstract: A device for tensioning a safety belt includes a pyrotechnic linear drive. The linear drive includes a gas generator (10) with an ignition unit (16), and a protective cap (18) to secure the gas generator (10) before and during the assembly of the gas generator (10). In the installed state of the device, at least a portion of the protective cap (18), after the igniting of the gas generator (10), represents a function element.

Abstract: A device for tensioning a safety belt includes a pyrotechnic linear drive. The linear drive includes a gas generator (10) with an ignition unit (16), and a protective cap (18) to secure the gas generator (10) before and during the assembly of the gas generator (10). In the installed state of the device, at least a portion of the protective cap (18), after the igniting of the gas generator (10), represents a function element.