×

Torsion bar with sharp, rapid onset property and retractor

  • US 5,899,402 A
  • Filed: 04/14/1998
  • Issued: 05/04/1999
  • Est. Priority Date: 04/14/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. An energy absorbing seat belt retractor (20) comprising:

  • a spool (30) and a torsion bar (50), the torsion bar including first and second end formations (52b and 52a), the first one of the end formations (52b) is drivingly connected to the spool;

    the torsion bar further includes a ductile, elongated body (52), located between the end formations and formed by extruding an oversized metal bar into a bar of a reduced diameter with its grain structure in the vicinity of a center of the bar (50) aligned in a longitudinal direction.

View all claims
  • 15 Assignments
Timeline View
Assignment View
    ×
    ×