Title:
SOFTBALL
Document Type and Number:
Japanese Patent JPS63119783
Kind Code:
A
Abstract:
A softball having a core and a cover wherein the ball has a circumference of approximately 12 inches, a weight of 175 to 178 grams, a coefficient of restitution of approximately 0.478 and a compression from about 0.010 to 0.014 inches, wherein said core has a density from about 15.5 to 16.5 pounds per cubic foot, and a hardness from about 72 to 78 on the shore A scale, said core being formed from a cellular polymeric material. The core is surrounded by a cover having a specific gravity of about 1.2, a thickness from about 0.035 inches to 0.060 inches and a hardness from about 78 to 90 on the Shore A scale. The cover is formed from a vinyl resin, a phthalate compound, stabilizers and a titanium dioxide dispersion.
Inventors:
RABATO PII MARITA
Application Number:
JP4323287A
Publication Date:
May 24, 1988
Filing Date:
February 27, 1987
Export Citation:
Assignee:
SUPORUDEINGU CORP
International Classes:
A63B37/00; B29D99/00; A63B37/12; (IPC1-7): A63B37/00
Domestic Patent References:
| JPS58133271A | 1983-08-08 | |||
| JPS5168324A | 1976-06-12 | |||
| JPS4738329A |
Attorney, Agent or Firm:
Yuzo Sanada (1 person outside)