Abstract: A safety belt arrangement employs a pretensioning mechanism or device which has a pulley assembly which includes a plurality of pulley segments separated from each other. The segments are normally placed apart from a gear corotatable with a spool shaft. On the other hand, the segments are driven in response to collision shock toward the gear of the spool shaft for transmitting a retracting force generated by a gas generator to a belt spool for pretensioning the belt.
Type:
Grant
Filed:
December 22, 1988
Date of Patent:
June 12, 1990
Assignees:
Nissan Motor Company, Limited, Fuji-Autolib Company, Limited