Cam actuated centrifugal brake for preventing backspin

Details Cam actuated centrifugal brake for preventing backspin Cam actuated centrifugal brake for preventing backspin

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 59/00 (2006.01) F16D 51/12 (2006.01) F16D 65/16 (2006.01) E21B 43/00 (2006.01)

Patent

CA 2571209

A cam assisted centrifugal brake or clutch system provides increased mechanical advantage to improve the output torque relative to prior art devices such as leading brake shoes. The brake or clutch engagement is cammed radially outwardly to engage a brake housing in one direction and guided to a disengaged position in the other direction. Centrifugal forces retain the brake in the disengaged position. Embodiments of the present invention are applied as a backspin braking system that is incorporated into a drive head for a progressing cavity pump drive system.

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