Rasp hub for tire retreading machine
AssigneeB&J Rocket America, Inc.
InventorCharles K. Stanfield
Life of this patent
Estimating the term…
Abstract
A rasp hub for use in tire retreading machines includes two side plates with mounting pins extending between the plates. Rasp blades arranged in stacks are mounted on the mounting pins. The stacks extend end-to-end circumferentially about the hub. The center portion of the mounting pins is curved so that the cut profile of the blades is convex. The blades are inclined relative to a plane perpendicular to the axis of rotation to define a cut angle. The center planes of the mounting pins intersect, preferably close to the axis of rotation of the hub, to reduce deviation of the blades from the concentricity.
Claims12
Apparatus for use in retreading tires, comprising:
- a hub including first and second side plates adapted for rotation about an axis;
- a plurality of mounting pins spaced at approximately equal angular spacing about said axis of rotation, each mounting pin having first and second end segments and a curved central segment extending outwardly of said axis of rotation to form a convex hub, said first end segments of each mounting pin fixed to said first side plate, said second ends of each mounting pins coupled to said second side plate;
- a plurality of stacks of rasp blades removably mounted on said mounting pins, said stacks extending end-to-end about said hub;
- each of said mounting pins having a center line defining a center plane, said center planes of said mounting pins intersecting along a line of intersection.
Dependencies are inferred from the claim text.