A crossed helical gear is a gear that operate on non-intersecting, non-parallel axes.
The term crossed helical gears has superseded the term spiral gears. There is theoretically point contact between the teeth at any instant. They have teeth of the same or different helix angles, of the same or opposite hand. A combination of spur and helical or other types can operate on crossed axes.
Read more about this topic: List Of Gear Nomenclature
Famous quotes containing the words crossed and/or gear:
“We crossed a deep and wide bay which makes eastward north of Kineo, leaving an island on our left, and keeping to the eastern side of the lake. This way or that led to some Tomhegan or Socatarian stream, up which the Indian had hunted, and whither I longed to go. The last name, however, had a bogus sound, too much like sectarian for me, as if a missionary had tampered with it; but I knew that the Indians were very liberal. I think I should have inclined to the Tomhegan first.”
—Henry David Thoreau (1817–1862)
“But Lord, remember me and mine
Wi’ mercies temporal and divine!
That I for grace and gear may shine,
Excelled by nane!
And a’ the glory shall be thine!
Amen! Amen!”
—Robert Burns (1759–1796)