SEATBELT RETRACTOR
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United States of America Patent
Stats
-
N/A
Issued Date -
Apr 24, 2014
app pub date -
May 17, 2012
filing date -
May 31, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A retractor includes a pretensioner unit including a pinion gear configured to rotate in association with a windup drum, a piston that causes the windup drum to rotate in a direction of winding webbing through the pinion gear, a cylinder that holds the piston, and a gas generating member that fills an interior space of the cylinder with a gas to drive the piston. The cylinder includes a gas release hole on a side surface thereof, the gas release hole provided to be located: in an initial position of the piston before gas generation, at a position at which the interior space and an outside thereof are not continuous with each other through the gas release hole; and after gas generation, at a position at which the interior space that has changed upon moving of the piston and the outside are continuous with each other through the gas release hole.
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