Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1979-12-26
1982-05-11
Marlo, George J.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
273 63D, 264299, A63B 3714
Patent
active
043289673
ABSTRACT:
A bowling ball having an inner core and at least one thermosetting resin shell which contains sufficient lightweight particles, such as unicellular borsilicate glass spheres, having a diameter within the range of from about 10 to 100 microns and evenly dispersed therethrough to reduce the weight by volume of the shell by at least five percent below that of a similar volume of said thermosetting resin without said lightweight particles. The lightweight particles appearing on the outer surface of the shell will create a finely pitted texture. The manufacturing method comprises substantially uniformly dispersing lightweight unicellular particles in a thermosetting resin mass and molding the mass about an inner core while maintaining the particles substantially uniformly dispersed in the mass until the resin gels sufficiently to prevent substantial movement of said particles, minimizing air inclusions through the use of surfactants, proper agitation and vacuum, use of resins and conditions which promote rapid gelation, and use of such lightweight particles as will sufficiently lower the weight by volume of the resin and also maintain the integrity of the resultant bowling ball.
REFERENCES:
patent: 3068007 (1962-12-01), Satchell
patent: 3090620 (1963-05-01), Consolloy
patent: 3202742 (1965-08-01), Bachelder et al.
patent: 3206201 (1965-09-01), Hendricks
patent: 3248113 (1966-04-01), Baggenstoss et al.
patent: 3256018 (1966-06-01), Baggenstoss
patent: 3270108 (1966-08-01), Randolph
patent: 3740354 (1973-06-01), Dearmont
Miller, Jr. Charles M.
Orlando Samuel J.
Columbia Industries, Inc.
Marlo George J.
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