发明授权
US09334691B2 Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps 有权
用于控制或限制移动腔马达和泵中的转子轨道的装置和方法

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps
摘要:
A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.
信息查询
0/0