首页>
外国专利>
Signalling device for e.g. roller skates or skateboards, comprises wheel contactable with ground in order to ring bell
Signalling device for e.g. roller skates or skateboards, comprises wheel contactable with ground in order to ring bell
展开▼
机译:信号装置,例如溜冰鞋或滑板,包括可与地面接触的车轮,以便响铃
展开▼
页面导航
摘要
著录项
相似文献
摘要
The skate(board) is provided with a wheel which is normally lifted clear of the ground, but which can be brought into contact with the ground in order to make it rotate, whereupon a spring-loaded striking part is lifted and made to strike a bowl-shaped bell, generating a ringing noise.
展开▼