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Bohlin worked on the seat belt for about a year, using skills in developing ejection seats for SAAB; he concentrated on keeping the driver safe in a car accident. After testing the three-point safety belt, he introduced his invention to the Volvo company in 1959 and received his first patent (number 3,043,625). [ 1 ]
The first car model to have the three-point seat belt as a standard item was the 1959 Volvo 122, first outfitted with a two-point belt at initial delivery in 1958, replaced with the three-point seat belt the following year. [35] The three-point belt was developed by Nils Bohlin, who had earlier also worked on ejection seats at Saab. [36]
That same year, Volvo engineer Nils Bohlin invented and patented the three-point lap and shoulder seat belt, which became standard equipment on all Volvo cars in 1959. [44] Over the next several decades, three-point safety belts were gradually mandated in all vehicles by regulators throughout the industrialised world. [citation needed]
After Vattenfall engineers presented their pioneering work to Volvo in the 1950s, [58] Volvo engineer Nils Bohlin invented and patented the modern three-point safety belt, which became standard on all Volvo cars in 1959, [59] and then made this design patent open in the interest of safety and made it available to other car manufacturers for free.
Nash offered optional seat belts in some models by 1949, and in all models the following year. [42] Ford followed suit in 1955, but it was the Swedish company Saab who introduced seat belts as standard equipment, in the Saab GT 750 shown at the 1958 New York Motor Show .
Nils Bohlin (1920–2002), Sweden – the three-point seat belt Sarah Boone (1832–1908), U.S. – improved ironing board design Charlie Booth (1903–2008), Australia – Starting blocks