PRETENSIONER DEVICE AND SEAT BELT DEVICE
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United States of America Patent
Stats
-
N/A
Issued Date -
Nov 14, 2013
app pub date -
Jan 5, 2012
filing date -
Feb 1, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In a pretensioner main body, a cylindrical space and a gas introducing space are formed, and a blocking end portion including a first through hole portion is provided to block the gas introducing space. A piston is movable within the cylindrical space, and a coupling member coupled to the piston is guided to the outside from the gas introducing space through the first through hole portion. An elastic seal member is provided on the inner surface side of the blocking end portion and includes a second through hole portion allowing the coupling member to pass therethrough. A gas buffer member is provided at such a position as to sandwich the elastic seal member between the blocking end portion and itself, where a third through hole portion having a shape and a size corresponding to the shape and size of the cross-section of the coupling member is formed.
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