Patent ID: 7416150

Claim:
An inertial sensor mass for use in a seatbelt retractor assembly, said inertial sensor mass comprising a solid body having a wide portion and a narrow portion, a middle region of the wide portion of the solid body being embedded in an elastomeric material that extends to a lower end of the inertial sensor mass, the solid body comprising a material having a density that is greater than the density of the elastomeric material, the elastomeric material forming an elastomeric flange around the middle region of the wide portion of the solid body, said elastomeric flange having protruding generally vertically extending elastomeric members extending from the elastomeric flange, said protruding elastomeric members are separated by gaps and are movable relative to said solid body, an upper region of the wide portion of the solid body comprises a portion of an exterior surface of the solid body that is free of the elastomeric material for contacting a component of a seatbelt retractor assembly.