| 摘要 |
<p>1,215,782. Vehicle bodies. BUDD CO. 13 May, 1969 [1 July, 1968], No. 24395/69. Heading B7B. [Also in Division B3] A part of a vehicle body such as a forward extension of the frame which carries the bumper is made initially longer than that required for the finished structure and is then subjected to a stress in the longitudinal direction beyond its yield point to bring it to the desired length. In a subsequent collision such member will collapse with a constant stress and thus avoid the initial high stress generated in a member not prestressed.</p> |
