Safety belt retractor with a vehicle-sensitive and webbing-sensitive blocking mechanism
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United States of America Patent
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Dec 8, 1992
Grant Date -
N/A
app pub date -
Aug 27, 1991
filing date -
Sep 7, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
To avoid an undesirable locking of the belt spool on sudden taking up of a relatively great length of webbing on the belt spool, a means is provided which from a predetermined value of the external diameter of the webbing coil on the belt spool onwards prevents activation of the vehicle and webbing-sensitive blocking mechanism. This is achieved by means of a synchronization gear which is coupled non-rotatably to the belt spool and from a predetermined value of the external diameter of the webbing coil onwards comes into engagement with a coupling gear which simultaneously comes into engagement with an external toothing of a control disk, so that any relative movement between the control disk and the belt spool is prevented, thereby disabling activation of the blocking mechanism.
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