Winding – tensioning – or guiding – Reeling device – With spring motor
Reexamination Certificate
2008-05-14
2011-10-25
Mansen, Michael (Department: 3654)
Winding, tensioning, or guiding
Reeling device
With spring motor
C242S379100
Reexamination Certificate
active
08042758
ABSTRACT:
Provided is a pretensioner for a seat belt retractor. The pretensioner for a seat belt retractor of a vehicle includes a torsion bar on which a webbing is wound; a gear member connected to the torsion bar; a base member with which the gear member is meshed and through which the torsion bar passes; a cylinder having a movement guide hole formed therein to supply a gas upon rapid deceleration of the vehicle; a piston having a rack formed at a side surface thereof in a longitudinal direction to be meshed with the gear member and moved along the movement guide hole upon supply of a gas, and; a cylindrical sealing operation part integrally formed with a bottom of the piston and projecting therefrom; and a sealing part coupled to an outer periphery of the sealing operation part to seal between the piston and an inner wall of the cylinder, wherein the base member has a hooking means for hooking the piston to a rack. Since the rack of the piston is hooked by the hooking means and assembled thereto, it is possible to form an appropriate gap (or a marginal space) between the sealing part and the straight movement guide hole.
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Bae Gi-Young
Bai Sang-Hong
Choi In-Su
Kim Do-Shik
Kim Jong-Kag
Autoliv Development AB
Brinks Hofer Gilson & Lione
Campos, Jr. Juan
Mansen Michael
LandOfFree
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