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Automatic safety belt system

  • US 4,346,778 A
  • Filed: 03/07/1980
  • Issued: 08/31/1982
  • Est. Priority Date: 04/11/1979
  • Status: Expired due to Term
First Claim
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1. An automatic safety belt system with a belt band which can be wound on and off a spring-loaded roller mounted within a housing, one end of the belt band being attached to the roller, and a signaling means for signaling when a predetermined length of belt sufficient to allow it to be applied to a user is unwound, characterized in that the signaling means comprises an electro-optical device arranged in the vicinity of the belt band path and cooperating with contrast markings arranged on the belt band at positions related to the predetermined length, which positions are displaced from the end of the belt attached to the roller.

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