The root surface has a first root surface portion defined by a first radius extending from an arc center (408) of the first root surface portion.
An edge (234) of the knockout is positioned in contact with the root surface.
The first asymmetric tooth space (154) including a first root surface (156) adapted for contacting the roller (128) during rotation of the sprocket (112, 114).
The finished worm (70) includes a mid zone (B) where the root surface and outside helix are cylindrical for a predetermined distance along the axis of the worm wheel.
The root surface between successive teeth can be relieved so that a space is defined between the root surface and a roller that bridges the root.
At least one of the pedestals includes a pedestal surface oriented such that a ray normal to the pedestal surface and directed away from the pedestal surface intersects a line defined by an intersection between the surface to be cooled and the pedestal.
Methods, apparatuses and systems are disclosed for conditioning a foot surface by contacting a foot surface with an article designed to contact foot surfaces for the purpose of abrading, moisturizing and otherwise conditioning a foot surface.
At the bottom of each of the curb walls, is a foot surface extending substantially parallel to the ground and to the flat top surface.