Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1976-07-07
1978-11-07
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
156245, 264 466, 264 469, 264257, 264259, 264271, 264DIG5, 264DIG13, 264DIG17, B29D 2700
Patent
active
041246705
ABSTRACT:
A novel structural member, such as a tennis racket frame, having an unusually high strength to weight ratio is provided comprising an expanded foamed plastic core integrally bonded to a shell comprising at least one layer of resin-coated unidirectionally oriented graphite fibers, the shell completely encasing the core at any transverse cross section of the structural member, said core comprising from about 25 to about 75 volume percent of a low density cellular filler material, such as chopped cork, and from zero to about 60 weight percent of a high density weight control material, such as barium sulfate.
The structural member is prepared by preparing a foamable resin composition comprising a resin component, a blowing agent, from about 7 to about 50 weight percent of a low density cellular filler material and from zero to about 60 weight percent of a high density weight control material, forming said composition into an elongated core strip, wrapping said core strip with at least one sheet of resin-coated unidirectionally oriented graphite fibers, arranging said wrapped core within a mold cavity, sealing the mold cavity and activating the foamable resin composition to cause expansion and generate pressure within the mold cavity and thereby provide intimate bonding of the core to the shell.
REFERENCES:
patent: 2525469 (1950-10-01), Anderson
patent: 2975488 (1961-03-01), Brauner
patent: 3041229 (1962-06-01), Moisson
patent: 3635483 (1972-01-01), Barriball et al.
patent: 3666589 (1972-05-01), Alderfer
patent: 3690658 (1972-09-01), Howe
patent: 3703571 (1972-11-01), Roberts
patent: 3709754 (1973-01-01), Medler
patent: 3755037 (1973-08-01), Erwin et al.
patent: 3821135 (1974-06-01), King
patent: 3830894 (1974-08-01), Juenger et al.
patent: 3889951 (1975-06-01), Schaefer et al.
patent: 3949988 (1976-04-01), Staufer
patent: 3971669 (1976-07-01), Wrzesien et al.
The Sporting Goods Dealer Product Reviews "Racket Combines Graphite, Plastic", May, 1974, p. 126.
Time, "Those Super Racquets", Dec. 27, 1976, pp. 49-50.
Moiseyev, A. A.; V. V. Pavlov and M. Ya Borodin, Editors, "Expanded Plastics; a Collection of Papers", New York, Macmillan Co., 1963, pp. 85-94, 101-108 (A Pergamon Press Book).
Cecka Andrew M.
Pawling Paul G.
Anderson Philip
Fansteel Inc.
LandOfFree
Method of producing a composite high strength to weight structur 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 producing a composite high strength to weight structur, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing a composite high strength to weight structur will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2233846