Cam actuated centrifugal brake for wellhead drives

Details Cam actuated centrifugal brake for wellhead drives Cam actuated centrifugal brake for wellhead drives

F - Mech Eng,Light,Heat,Weapons

16

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F16D 65/14 (2006.01) E21B 33/03 (2006.01) F04C 14/06 (2006.01) F04C 14/28 (2006.01) F16D 51/12 (2006.01) F16D 59/00 (2006.01) F16D 65/22 (2006.01)

Patent

CA 2530782

The present invention has a cam assisted centrifugal brake or clutch system with increased mechanical advantage to improve the output torque relative to prior art such as leading brake shoes. The brake or clutch engagement engages in one direction and freewheels without contact in the other direction. One embodiment of the present invention is applied as a backspin braking system that is incorporated into a drive head for a progressing cavity pump drive system.

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