Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Making hole or aperture in article
Patent
1989-11-21
1991-06-04
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Making hole or aperture in article
264255, 264274, 264323, 102466, B29C 4302, B29C 4514, B29C 4516, B29C 4544
Patent
active
050212060
ABSTRACT:
A dual plastic compression formed shotshell casing includes an injection-molded annular-shaped hard plastic rim and an elongated compression-formed tubular body having an integral basewad portion at its base end which is mechanically interlocked with the rim to define the final basewad of the shotshell casing. In method of making the shotshell casing, the hard plastic rim is first injection molded independently. The tubular body is then formed in a two-step process. In the first step, a plastic preform is injection molded over the rim in mechanically interlocked relation to the rim. In the second step, the tubular body is compression formed from the preform mechanically locked to the rim.
REFERENCES:
patent: 3171350 (1965-03-01), Metcalf et al.
patent: 3233546 (1966-02-01), Foote et al.
patent: 3283720 (1966-11-01), Foote et al.
patent: 3284560 (1966-11-01), King et al.
patent: 3491691 (1970-01-01), Vawter
patent: 3675576 (1972-07-01), Whitney
patent: 4020763 (1977-05-01), Iruretagoyena
patent: 4147107 (1979-04-01), Ringdal
patent: 4403933 (1983-09-01), Davis et al.
patent: 4593621 (1986-06-01), Buchner
patent: 4614157 (1986-09-01), Grelle et al.
patent: 4680326 (1987-07-01), Leland et al.
English translation of France, #2,199,860.
Burdick B. E.
Durkin II Jeremiah F.
Olin Corporation
Wahl J. R.
Woo Jay H.
LandOfFree
Method of molding a dual plastic shotshell casing 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 molding a dual plastic shotshell casing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of molding a dual plastic shotshell casing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1025119