专利检索 ap:("Richard William Keatch") AND inv:"Richard William Keatch" 第 1 页

1.

发明授权
Screw pump and method of use 有权

公开(公告)号：US11644021B2

公开(公告)日：2023-05-09

申请号：US17290887

申请日：2019-10-25

申请人： Richard William Keatch

发明人： Richard William Keatch

IPC分类号： F04B19/12 , F04B19/06

CPC分类号： F04B19/12 , F04B19/06

摘要： The invention provides a fluid pump apparatus comprising a fluid inlet, a fluid outlet, a screw member and a rotatable pump member. The screw member has at least one helical screw blade configured to be rotated by a fluid flow stream and the rotatable pump member is in fluid communication with the fluid inlet and/or fluid outlet.