Airbag with vertical groove

An airbag (100a) has a single inflatable chamber (101) formed by a main panel (102b) and pair of side panels (104a, 104b) integral to or otherwise attached along mating edges. The main panel (102b) has an upper portion (135), a front portion (126) and a lower portion. A vertically oriented recessed portion is (110) formed on a forward facing portion of the airbag (100a). The recessed portion (110) divides the inflatable chamber (101) into two lobe portions (112a, 112b). A tether (180) is located in the inflatable chamber (101) and has one end attached to the recessed portion (110) and a second end that is anchored thereby limiting forward movement of the recessed portion (110) upon inflation of the inflatable chamber (101). The upper portion (135) of the main panel (102b) extends across an upper region of the recessed portion (110). The airbag is useful as a frontal airbag, particularly as a passenger side frontal airbag.