公开(公告)号：US06960112B2

公开(公告)日：2005-11-01

申请号：US10778369

申请日：2004-02-13

申请人： David Vincent Helmlinger ,  Gregory Gilbert Garneau ,  Lee Chun Wah ,  Chung Zhi Jie

发明人： David Vincent Helmlinger ,  Gregory Gilbert Garneau ,  Lee Chun Wah ,  Chung Zhi Jie

IPC分类号： A63H20060101 ,  A63H27/00 ,  A63H27/127 ,  A63H27/133

CPC分类号： A63H27/12

摘要： An airfoil blade in a powered toy aircraft has a body with a cushioned edge. The body has a first end adjoining a hub, a second opposing end, a forward edge, and an opposing trailing edge. The cushioned leading edge is attached mechanically to the body and extends along the forward edge so as to form a cushioned leading edge of the blade or along the second end to form a cushioned blade tip or both. The body is formed from a first resiliently flexible polymer plastic material. The cushioned edge is formed from a second noticeably softer material such as an elastomer.