公开(公告)号：US3728043A

公开(公告)日：1973-04-17

申请号：US3728043D

申请日：1972-01-12

Applicant: FRAM CORP

Inventor： PRATINIDHI S

IPC: F04D29/38 ,  F04D29/36

CPC classification number: F04D29/382

Abstract: A flexible bladed automotive cooling fan in which the blades are provided with a plurality of radially spaced, transversely extending, raised ribs on the side thereof opposite the arms to which the blades are connected, the ribs extending from the leading edges of the arms to a position intermediate the trailing edges of the arms and the blades.

Abstract translation: 一种柔性叶片汽车冷却风扇，其中所述叶片在其与所述叶片连接的臂相对的一侧上设置有多个径向隔开的横向延伸的凸缘，所述肋从所述臂的前缘延伸到 位于臂和叶片的后缘之间的位置。