Paragraph Number

164

In one embodiment, the engagement interface may include one or more protrusions on one or the other or both of the superior surface 1046 of the coupling member 1032 and the inferior surface 1044 of the collar 1004. Alternatively, or in addition, in certain embodiments, the engagement interface may be a hirth joint. As used herein, a “hirth coupling” or "hirth joint" refers to a type of mechanical connection named after its developer Albert Hirth. It can be used to connect two pieces of a shaft together and is characterized by tapered teeth that mesh together on the end faces of each half shaft. (Search "hirth coupling" on Wikipedia.com 2 Oct. 2021. CC-BY-SA 3.0 Modified. Accessed Nov. 15, 2021.)

Added by DJM 12 2021