Invention Grant
US07878764B2 Adjustable fan and method 有权
可调风扇和方法

Adjustable fan and method
Abstract:
An adjustable fan includes a hub having a receiving surface and a fan blade having a base abutting the receiving surface of the hub. A plurality of keyways may be positioned in at least one of the receiving surface and the base. A key may extend between the base and the receiving surface and into at least one of the plurality of keyways in order to retain the fan blade in a desired orientation relative to the hub.
Public/Granted literature
Information query
Patent Agency Ranking
0/0