herringbone gear

herringbone gear

noun
a helical gear having teeth that lie on the pitch cylinder in a V -shaped form so that one half of each tooth is on a right-handed helix and the other half on a left-handed helix.
Also called double-helical gear.
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World English Dictionary
herringbone gear
 
n
Also called: double-helical gear a gearwheel having two sets of helical teeth, one set inclined at an acute angle to the other so that V-shaped teeth are formed

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