Method of making a bowling pin having expanded copolymer core

Details Method of making a bowling pin having expanded copolymer core Method of making a bowling pin having expanded copolymer core

1995-04-24

1997-05-20

Pierce, William M.

Games using tangible projectile

Bowling

Pin

473124, 264 48, 264274, A63B 6300

Patent

active

056307624

ABSTRACT:
Bowling pins formed by molding a plastic shell about a foamed plastic core have not heretofore come into practical use because of inability to withstand shocks in service, resulting in separation of the shell from the core. According to the present invention, a foamed thermoset (non-melting) copolymer is employed for casting the core. Thereafter, before casting a plastic shell thereabout, the core surface area is substantially increased by simply removing the core surface skin, thereby opening the outermost thermoset core cells for filling by the shell material.

REFERENCES:
patent: 2180676 (1939-11-01), Guimond
patent: 2517116 (1950-08-01), Klinger
patent: 2738977 (1956-03-01), Riley
patent: 3169020 (1965-02-01), Smith
patent: 3186713 (1965-06-01), Hebble
patent: 3229978 (1966-01-01), Guglielmo, Sr.
patent: 3232616 (1966-02-01), Conklin et al.
patent: 3237945 (1966-03-01), Isenberg et al.
patent: 3240646 (1966-03-01), Smith
patent: 3301560 (1967-01-01), Satchell et al.
patent: 3397889 (1968-08-01), Smith
patent: 3445113 (1969-05-01), Satchell et al.
patent: 3477721 (1969-11-01), Satchell et al.
patent: 3525524 (1970-08-01), Schmid
patent: 3619436 (1971-11-01), Gruss
patent: 3971837 (1976-07-01), Hasegawa et al.
patent: 4258106 (1981-03-01), Cottrell, Jr.
patent: 4322078 (1982-03-01), Mallette
patent: 4445688 (1984-05-01), Frillici et al.
patent: 4457511 (1984-07-01), Witkowski
patent: 4630820 (1986-12-01), Bertozzi
patent: 4865320 (1989-09-01), Unterberger
patent: 4971322 (1990-11-01), Jager
Design Considerations and Guide Specifications, Urethane Foam Contractors Association, paragraph 6.01, p. 9.
Adhesion and Bonding, Norbert M. Bikales, Ed., Wiley-Interscience Publishers; pp. 137-142, specifically p. 139.
Dow Plastics "Ployurethanes: Versatile Polymers for Today and Tomorrow" pp. 3-4, 23 .COPYRGT.1990.

Affiliated with

Also associated with

Rating

Method of making a bowling pin having expanded copolymer core does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making a bowling pin having expanded copolymer core, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a bowling pin having expanded copolymer core will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1720538