Pretensioner for a seatbelt retractor

Details Pretensioner for a seatbelt retractor Pretensioner for a seatbelt retractor

1997-08-11

1999-10-19

Nguyen, John Q.

Winding, tensioning, or guiding

Reeling device

With spring motor

280806, B65H 7548, B60R 2236

Patent

active

059674407

ABSTRACT:
A pretensioner for use with a retractor for a vehicle safety restraint to rapidly take up slack in a safety belt system at the onset of a crash situation so as to more correctly and securely restrain the vehicle occupant and to more correctly position him for maximum effect of an inflatable safety device such as an air bag. The pretensioner comprises a piston-cylinder arrangement in which a piston is driven along the inside of a cylinder under force provided, for example, by a spring or by a gas generator. The pretensioner has a resilient seal around the piston and the cylinder to provide load limiting at the start of the pretensioner stroke. Safety arrangements are provided for ensuring that the pretensioner is not activatable before installation in the vehicle, and the gas generator is constructed to ensure that there are no loose parts after detonation, which could cause damage. A bearing for the cylinder is provided for use when the piston-cylinder forms the crash sensor.

REFERENCES:
patent: 5310219 (1994-05-01), Fohl
patent: 5351485 (1994-10-01), Hiruta
patent: 5553890 (1996-09-01), Buhr et al.

Affiliated with

Also associated with

Rating

Pretensioner for a seatbelt retractor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pretensioner for a seatbelt retractor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pretensioner for a seatbelt retractor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2046181