Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1978-08-21
1980-07-29
Marlo, George J.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
428187, 428 13, 273DIG14, 40327, A63B 3700
Patent
active
042147530
ABSTRACT:
An example of the shock resistant transparent polymer sphere is a billiard or pool ball. The molding apparatus includes lower and upper mold halves defining juxtaposed concave hemispherical surfaces to define a spherical mold cavity with a top fill opening on the upper mold half. Interlocking of the mold halves together is accomplished by tongue and window structures circumferentially spaced about the meeting points of the two halves at 120.degree.. A holder in the form of an annular ring is provided for supporting a central disc provided with a symbol on each of its opposite faces. The design is such that the ring when positioned in the spherical cavity defined by the mold halves supports the disc with its center coincident with the center of the spherical cavity. The molded sphere is made by a single pouring operation of resin through the fill opening, the disc and ring being encapsulated within the sphere. The composition of the resulting product is such that a bonding takes place between the disc, ring and resin material for the sphere resulting in a final sphere in which shock is absorbed by the disc, supporting ring, ink utilized in forming the symbol on the opposite faces of the disc as well as the resin as though the entire sphere were homogeneous throughout the ink itself defining the symbol on the disc constitutes a polyester and thermoplastic alloy bonded to the disc surface. The surface portions of the disc free of this ink tend to swell slightly from extended contact with the polyester resin so that the symbol appears engraved.
REFERENCES:
patent: 3207514 (1965-09-01), Vickery
patent: 4116439 (1978-09-01), Chavarria
Fernandez Marlin D.
Haber Terry M.
Fernandez Joseph L.
Marlo George J.
Pastoriza Ralph B.
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