pitch surface
noun
(in a gear or rack) an imaginary surface forming a plane (pitch plane), a cylinder (pitch cylinder), or a cone or frustrum (pitch cone) that moves tangentially to a similar surface in a meshing gear so that both surfaces travel at the same speed.
Origin of pitch surface
First recorded in 1885–90
Words nearby pitch surface
pitch on,
pitch pine,
pitch pipe,
pitch plane,
pitch shot,
pitch surface,
pitch wart,
pitch woo,
pitch-and-putt,
pitch-and-run shot,
pitch-and-toss
Example sentences from the Web for pitch surface
The pitch-surface of a wheel lies intermediate between the points of the teeth and the bottoms of the hollows between them.