Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Filaments
Patent
1994-06-01
1996-04-02
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Filaments
264 297, 264103, 264320, 264324, 4234478, C01B 3102, C01B 3104, D01F 9145, D01F 922
Patent
active
055037836
ABSTRACT:
A spring member made of a carbon fibers/carbon composite material in which carbon fibers are dispersed in a matrix of graphite, and a process for producing such a spring member. The process includes the steps of: (a) forming raw preformed yarns; (b) shaping the raw preformed yarns in a form of a yarn member, a taper member or a sheet member; (c) coiling the thus shaped member around a core rod together with a coiling spacer; (d) molding the coiled member by hot pressing at about 300.degree. C.-2000.degree. C. under a given pressurized pressure; and graphitizing the coiled member at 1500.degree. C.-3000.degree. C., after carbonizing at 700.degree.-1200.degree.C. if necessary.
REFERENCES:
patent: 3943213 (1976-03-01), Whittaker et al.
patent: 4006881 (1977-02-01), Gaillard
patent: 4412675 (1983-11-01), Kawakubo
patent: 4544599 (1985-10-01), Buttazzoni
patent: 4772502 (1988-09-01), Okura et al.
patent: 4902453 (1990-02-01), Okura et al.
Buhl et al: "Carbon fibre spring for high-temperature application", Journal Of Crystal Growth 131 (1993) 470-472.
Chtopek, et al: "Mechanical Properties of Carbon-Carbon Composites", Ceramics International 19 (1993) No. 4, 251-257.
Chemical Abstracts, vol. 115, No. 4, Jul. 29, 1991, abstract No. 34165, Takamasa et al: "Preparation and characteristics of a new carbon spring".
Patent Abstract Of Japan, vol. 18, No. 163, (c-1181) Mar. 18, 1994.
Nakagawa Takao
Nozaki Yasuo
Sato Toshihiro
Tachibana Masaharu
Yamashita Mihoko
Across Co., Ltd.
Tentoni Leo B.
LandOfFree
Process of making a spring member does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process of making a spring member, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of making a spring member will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2014613