Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Martin Helms0
Martin Liess0
Date of Patent
January 18, 2022
0Patent Application Number
150065620
Date Filed
January 26, 2016
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A modular top drive system for construction of a wellbore includes a motor unit. The motor unit includes: a drive body; a drive motor having a stator connected to the drive body; a trolley for connecting the drive body to a rail of a drilling rig; and a drive ring torsionally connected to a rotor of the drive motor and having a latch profile for selectively connecting one of: a drilling unit, a casing unit, and a cementing unit to the motor unit.
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