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US 6,406,079 B2Granted
Automobile bumper core
AssigneeKyoraku Co., Ltd.
InventorsTeruo Tamada, Shozo Hattori
Life of this patent
Estimating the term…
Abstract
The automobile bumper core according to the present invention provides greater impact absorbing qualities from impact forces. The core (3) comprises a surface wall (8) and an opposing rear wall (9), with a pair of opposing side walls (7). In one embodiment there are a plurality of ribs (10) and a plurality of hollow portions (6) between the surface wall (8) and the rear wall (9). The bumper core is intended to lie disposed inside the bumper fascia (2) and the resulting bumper is attached to the automobile.
Claims14
An impact absorbing automobile bumper, comprising:
- a bumper fascia and one or more bumper pore sections, said bumper core sections having a surface wall and an opposing rear wall, a pair of opposing sidewalls, and wherein said bumper core sections have one or more ribs and a plurality of hollow portions between said surface wall and said rear wall, and wherein said surface wall attaches to an inner surface of a portion of a driver side of said bumper fascia and a portion of a passenger side of said bumper fascia, and said bumper fascia is attached to an automobile in a longitudinal manner, and wherein said bumper core sections are composed of a thermoplastic resin with a modulus of flexural elasticity of about 10000 kg/cm2 to 40000 kg/cm2, and an overall mean wall thickness is about 0.5 mm to 4.0 mm, and a product of modulus of flexural elasticity and mean wall thickness is about 1000 kg/cm to 10000 kg/cm.
Dependencies are inferred from the claim text.