Bore tube for a pressure compensation system in a roller cone drill bit
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United States of America Patent
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Nov 19, 2019
Grant Date -
Feb 1, 2018
app pub date -
Mar 6, 2015
filing date -
Mar 6, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
The disclosure relates to a bore tube for a pressure compensation system in a roller cone drill bit. The bore tube includes a bit body having at least one support arm extending therefrom, a lubricant chamber in each support arm, a bore in each support arm extending from to the lubricant chamber to an exterior surface of each support arm, a tube in the bore of each support arm, and a floating bead in the tube and operable to move axially within the tube in response to a pressure of the environment surrounding the roller cone drill bit.
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