Method of manufacturing a bowling pin
AssigneeQubicaAMF Worldwide, LLC
InventorsWayne White, Joe Infantino, Rodney C. Mallette, Ron Mizzi
Life of this patent
Estimating the term…
Abstract
A bowling pin including a body having a head, a neck, a ball line portion, and a base all integrally formed of a synthetic material. The body includes a hollow area and a longitudinal axis of the hollow area extends generally perpendicularly to a substantially planar bottom surface of the base. A method of manufacturing a bowling pin includes providing a mold shell having a mold cavity shaped substantially as a bowling pin, disposing a mandrel inside a mold cavity, introducing material into the mold cavity, cooling the material inside the mold cavity, removing the mandrel from the mold cavity, removing the material from the mold cavity, and cooling the material outside the mold cavity.
Claims23
A method of manufacturing a bowling pin, comprising:
- providing a mold shell having a mold cavity shaped substantially as a bowling pin;
- connecting a neck insert to an end of a mandrel;
- disposing the connected mandrel and neck insert inside the mold cavity;
- introducing material into the mold cavity;
- cooling the material inside the mold cavity;
- removing the mandrel from the mold cavity;
- removing the material from the mold cavity;
- and
- cooling the material outside the mold cavity,
- wherein the material is formed into a body comprising a generally conical internal hollow area and an exposed exterior surface of the bowling pin having a head, neck, ball line portion, and base, and
- wherein the removing the mandrel from the mold cavity comprises the neck insert remaining at the neck of the bowling pin.
A method of manufacturing a bowling pin, comprising:
- providing a mold shell having a mold cavity shaped substantially as a bowling pin;
- connecting a neck insert to an end of a mandrel;
- disposing the mandrel inside a mold cavity,
- introducing a material comprising ethylene-methacrylic acid copolymer into the mold cavity;
- cooling the material inside the mold cavity;
- removing the mandrel from the mold cavity;
- after the removing the mandrel from the mold cavity, removing the material from the mold cavity;
- and
- cooling the material outside the mold cavity,
- wherein the material is formed into a body comprising a generally conical internal hollow area and an exposed exterior surface of the bowling pin,
- selecting a size and a shape of the mandrel to achieve a predetermined shape of the hollow area such that:
- the hollow area extends from a base of the bowling pin to a termination point within the bowling pin, the hollow area has a constant diameter from the base of the bowling pin to a transition location, and the hollow area has a sidewall having a generally constant gradient extending from the transition location to another transition location or the termination point, and
- the disposing the mandrel inside the mold cavity comprises arranging the neck insert at a location within the mold cavity that corresponds to a neck of the bowling pin and the body of the bowling pin is formed around the neck insert.
Dependencies are inferred from the claim text.