Patent · US Expired

Universal emergency locking retractor

US4101092A · kind A · utility

11Cited by

5References

8Claims

0Family size

Assignee

N. V. Klippan S.A. · BE

Inventors

Harald Martin Schmelow
Per O. Weman · Heverlee, BE
Heino Arff · Norderstedt, DE

Key dates

Filing date	Apr 9, 1976
Grant date	Jul 18, 1978
Priority date	—
Expiry date	Apr 9, 1996

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R22/405
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A seat belt retractor of the inertia type comprises a rotatable shaft with a cam-surface driven thereby. A locking element movable on the cam surface is positively displaced by a control element fitted in a recess thereof and acting from an inertia element. The locking element, when driven by the inertia member, engages with the teeth on an annular locking ring to stop retraction of the seat belt attached to the shaft. The inertia element may be spring preloaded and a locking wheel may be provided to provide alternative locking torque for the inertia element when the car assumes a roll-over condition in which the seat belt would not ordinarily retract quickly.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.