Barton John Kenyon,Ian Malcolm Smith,Andrew Wilson,Nicholas Jerome Reed
申请号：
US12312079
公开号：
US09004067B2
申请日:
2007.11.02
申请国别(地区):
US
年份:
2015
代理人:
摘要：
An impeller includes a top shroud, a bottom shroud, and a plurality of vanes extending from the top shroud to the bottom shroud. The top and bottom shrouds are generally planar, and a lower edge of each vane tapers from an outer edge of the bottom shroud to a transverse tip edge thereof.
