Torsion bar with sharp, rapid onset property and retractor

Winding – tensioning – or guiding – Reeling device – With spring motor


Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0


B60R 2228, B60R 2234, B65H 7548




A torsion bar (50) and seat belt retractor (20). The torsion bar (50) has a circular cross section where the torsion bar is formed as a cold headed extruded part and wherein the grain structure of the metal is aligned along the axis (axial direction) of the bar generally in the center of the bar and the grain structure smoothly diverges from the axial direction near an end formation (52a,b). The seat belt retractor (20) includes: a frame (22) to rotationally support the torsion bar and spool (30). The torsion bar (30) is characterized by an elastic deformation zone and a sharp onset into a plastic deformation zone. The spool is operatively connected to rotate with the torsion bar. The retractor also includes a locking device, activated during a vehicle accident and operatively linked to the torsion bar for preventing one side of the torsion bar from rotating while permitting the other side and the spool to rotate once loaded by the occupant.

patent: 3741494 (1973-06-01), Fiala
patent: 3857528 (1974-12-01), Fiala
patent: 3881667 (1975-05-01), Tandetzke
patent: 3961761 (1976-06-01), Wiesbock
patent: 4322046 (1982-03-01), Tanaka et al.
patent: 5320385 (1994-06-01), Schmid et al.
patent: 5344095 (1994-09-01), Frei
patent: 5526996 (1996-06-01), Ebner et al.
patent: 5529258 (1996-06-01), Dybro et al.
patent: 5624083 (1997-04-01), Modinger et al.
patent: 5628469 (1997-05-01), Fohl
patent: 5722611 (1998-03-01), Schmid et al.
patent: 5738293 (1998-04-01), Fohl
patent: 5749601 (1998-05-01), Knoll et al.


Say what you really think

Search for the USA inventors and patents. Rate them and share your experience with other people.


Torsion bar with sharp, rapid onset property and 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 Torsion bar with sharp, rapid onset property and retractor, we encourage you to share that experience with our community. Your opinion is very important and Torsion bar with sharp, rapid onset property and retractor will most certainly appreciate the feedback.

Rate now


Profile ID: LFUS-PAI-O-1863375

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.