Video encyclopedia

10/07/1925 Three-point seat-belt is patented

The U.S. patent was issued to Swedish engineer, Nils Bohlen. His three-point seat-belt design saved countless lives since its invention. It replaced earlier style of a single safety belts strapped across the body, with the buckle placed over the abdomen, which often caused severe internal injuries in high-speed crashes.


  • Essentials 

  • Effectiveness 

  • History 

  • Types 

  • Technology 

  • Homologation and testing 

  • Experimental 

  • In rear seats 

  • Legislation 

  • Mass transit considerations