TOMAHAWK DOWNHOLE LLC
TOMAHAWK DOWNHOLE LLC Patent applications | ||
Patent application number | Title | Published |
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20100190561 | Drilling motor coupling - A flexible drilling motor drive shaft coupling has two torque transmitting portions spaced apart axially, preferably, by a compression unit that is secured to one portion by a tension link and entrapped within the other portion. The tension link is, preferably, a cap screw extending along the axis of rotation of the coupling. | 07-29-2010 |
20100187013 | Motor shaft security apparatus - An interference structure is provided in a drilling motor to engage the motor drive shaft assembly if the thrust bearings fail and the drive shaft moves axially a preselected amount. The interference structure is protected from wear common to drilling motor use. The structure assures the recovery of all drilling motor parts if all thrust bearings fail. | 07-29-2010 |