Invention Grant
- Patent Title: Permanent magnet direct drive drawworks
- Patent Title (中): 永磁直驱驱动绞车
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Application No.: US12643439Application Date: 2009-12-21
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Publication No.: US08672059B2Publication Date: 2014-03-18
- Inventor: Kevin R. Williams
- Applicant: Kevin R. Williams
- Applicant Address: US TX Houston
- Assignee: Canrig Drilling Technology Ltd.
- Current Assignee: Canrig Drilling Technology Ltd.
- Current Assignee Address: US TX Houston
- Agent Adolph Locklar
- Main IPC: E21B19/20
- IPC: E21B19/20

Abstract:
A direct drive drawworks has a permanent magnet motor, a shaft extending from the permanent magnet motor so that the permanent magnet motor directly rotates the shaft, and a drum connected to the shaft away from the permanent magnet motor such that the rotation of the shaft causes a corresponding rotation of the drum. The permanent magnet motor has a housing, a stator positioned in the housing, and a rotor cooperative with the stator. The rotor has a drive plate affixed thereto. The shaft is directly connected to the drive plate. A bearing housing rotatably supports the shaft.
Public/Granted literature
- US20110073297A1 PERMANENT MAGNET DIRECT DRIVE DRAWWORKS Public/Granted day:2011-03-31
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