发明名称 Method and apparatus for making tapered spring leaf blanks and the like
摘要 1,175,012. Leaf springs. NORTH AMERICAN ROCKWELL CORP. 23 June, 1967 [12 Sept., 1966], No. 29056/67. Heading F2S. [Also in Division B3] A heavy duty tapered leaf spring has oppositely inclined flat surfaces 16, 18, a flat straight surface 23 and is of constant width. In an alternative form the bottom surface is also provided with taper surfaces, Fig. 8 (not shown).
申请公布号 GB1175012(A) 申请公布日期 1969.12.23
申请号 GB19670029056 申请日期 1967.06.23
申请人 NORTH AMERICAN ROCKWELL CORPORATION 发明人
分类号 B21D53/88;F16F1/02 主分类号 B21D53/88
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