Patent 9539974 was granted and assigned to Honda on January, 2017 by the United States Patent and Trademark Office.
Two twist-preventing members are respectively placed against the top and the bottom of an airbag body. The length direction of the twist-preventing members aligns with the length direction of the airbag body. The airbag body, the twist-preventing members, and a tab have been covered with a heat-shrinkable film in said state, and the heat-shrinkable film has been shrunken by heat.