Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Koji Hiramatsu0
Date of Patent
December 15, 2009
0Patent Application Number
117975760
Date Filed
May 4, 2007
0Patent Primary Examiner
Patent abstract
A seat belt device is provided where a pretensioner moves a ball train to the distal end side of a ball guide pipe by means of gas discharged from a gas generating device, and the movement rotates the spool for winding the seat belt in a belt winding direction so as to eliminate slack of the seat belt, while imparting necessary tension to the seat belt by loading rotational resistance on the spool in a belt withdrawing direction with gas pressure exerted on the ball train. The ball stopper stops movement of the ball train before all the balls in the ball train are ejected from the ball guide pipe in a state where the ball train functions to rotate the spool in the belt winding direction.
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