A helical rack has a planar pitch surface and teeth that are oblique to the direction of motion.
Read more about this topic: List Of Gear Nomenclature
Famous quotes containing the word rack:
“What we have we prize not to the worth
Whiles we enjoy it, but being lacked and lost,
Why, then we rack the value, then we find
The virtue that possession would not show us
Whiles it was ours.”
—William Shakespeare (1564–1616)