发明名称 Impeller arrangement
摘要 An impeller arrangement comprises an impeller 10 having at least one first vane surface 26 orientated such that the application of fluid under pressure thereto applies a torque to the impeller 10 in a first rotary direction, at least one second vane surface 28 orientated such that the application of fluid under pressure thereto applies a torque to the impeller 10 in a second, opposite rotary direction, and a valve 34 operable to control the supply of fluid to the first and second vane surfaces 26, 28.
申请公布号 US8092149(B2) 申请公布日期 2012.01.10
申请号 US20070958501 申请日期 2007.12.18
申请人 VAGHI FRANCESCO;SCHLUMBERGER TECHNOLOGY CORPORATION 发明人 VAGHI FRANCESCO
分类号 F01D1/30 主分类号 F01D1/30
代理机构 代理人
主权项
地址