Britax-kolb Gmbh & Co.

Wilfried Burghardt

Hans-Hellmut Ernst

Karl E Nilsson

Josef Mayer

An emergency locking retractor for a vehicle safety belt has a spool rotatably mounted on a frame, primary locking means arranged to block rotation of the spool relative to the frame and secondary locking means for actuating the primary locking means. The secondary locking means including an inertia sensor and a pawl pivotally mounted on a carrier which is movable relative to the frame, the pawl being movable by the inertia sensor into simultaneous engagement with a stop member on the carrier and a ratchet wheel coupled to the spool so that subsequent rotation of the spool of the belt protraction direction causes movement of the carrier which in turn actuates the primary locking means. The stop member is so positioned relative to the pivotal mounting thereof that the pawl comes into abutment with the stop member before its pawl tip abuts against the periphery of the ratchet wheel between adjacent teeth thereof.

Safety belt emergency locking retractor

Apparatus for tensioning a strap of a vehicle safety belt system, comprises a cylindrical drum, a first roller journaled on a stationary axis parallel to that of the drum and spaced radially outwardly from the surface thereof, a second roller mounted with its axis parallel to the axis of the drum at a radius between that of the surface of the drum and the first roller, and pyrotechnically powered means for causing angular movement of the second roller about the axis of the drum. Guide means are located at a greater radial distance from the axis of the drum than the second roller and oriented so that, prior to detonation of the pyrotechnic charge, the angular position of the second roller about the axis of the drum is between the first roller and the additional guide means. The strap passes between the second roller and the surface of the drum but radially outwardly of the first roller. Prior to detonation of the pyrotechnic charge, the strap does not touch the surface of the drum. When the charge is detonated, the second roller draws in the strap, wrapping it round the surface of the drum.

Pyrotechnic tensioner for vehicle safety belt

A seat belt tensioning system for a motor vehicle comprises a locking retractor for a seat belt and a pre-tensioning device for pre-tensioning the seat belt, the pre-tensioning device comprising mounting means for mounting the retractor on a fixed mounting member, the mounting means permitting movement of the retractor in a direction opposite to the protraction direction of the belt. Such movement of the retractor may be caused by a cable coupled to the front bumper of the vehicle.

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Altomuenster, Germany

Wilfried Burghardt