Automotive vehicle door and bar reinforcement

Details Automotive vehicle door and bar reinforcement Automotive vehicle door and bar reinforcement

1987-09-04

1989-01-10

Yee, Deborah

Land vehicles: bodies and tops

Bodies

Door or window with specified vehicle feature

296188, 428595, 148333, B60J 500, B21C 3704, C22C 3818

Patent

active

047969466

ABSTRACT:
An improved strengthening or reinforcing member is provided, particularly an automotive vehicle door bar or beam. The bar comprises an air cooled, hot rolled section of high strength alloy steel having a minimum tensile strength of about 150,000 lb/in.sup.2 and a total elongation of at least about 7.5%. In a preferred embodiment the steel comprises about 0.16 to 0.21% carbon, about 1.8 to 2.1% manganese; about 1.2 to 1.4% chromium; about 0.7 to 0.9% silicon; and the balance essentially iron. A clip element may be mounted on the bar to retard or prevent spreading of the flange portions of the section during bending. By securing or fixing the clip element to the section, a substantial improvement in load carrying capability is obtained.

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"Development of Lightweight Door Intrusion Beams Utilizing an Ultra High Strength Steel," T. E. Fine and S. Dinda, Feb. 24-28, 1975.

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