Land vehicles – Wheeled – Attachment
Patent
1984-10-09
1986-07-01
Bertsch, Richard A.
Land vehicles
Wheeled
Attachment
B60R 2110
Patent
active
045975868
ABSTRACT:
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.
REFERENCES:
patent: 4385775 (1983-05-01), Shimogana et al.
patent: 4458921 (1984-07-01), Chiba et al.
patent: 4508287 (1985-04-01), Nilsson
patent: 4508288 (1985-04-01), Nilsson
Burghardt Wilfried
Ernst Hans-Hellmut
Nilsson Karl E.
Bertsch Richard A.
Britax-Kolb GmbH & Co.
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