Connection for percussion drilling
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 4, 2025
Grant Date -
Dec 31, 2020
app pub date -
Feb 22, 2019
filing date -
Feb 22, 2019
priority date (Note) -
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Abstract
A connection for use in percussion drilling includes a male coupling and a female coupling. Each coupling includes a body and a respective screw thread formed on a respective inner or outer surface of the respective body. Each thread has a thread-form including a crest, a root, a contact flank and a non-contact flank. Each thread-form has a contact flank angle and a non-contact flank angle inclined relative to a respective baseline located at a respective minor or major diameter thereof. Each non-contact flank angle is greater than the respective contact flank angle. The crest of each thread-form is inclined from the respective contact flank to the respective non-contact flank such that an apex of the respective thread-form defining a respective minor or major diameter thereof is located adjacent to the respective non-contact flank.
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