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or mesophase pitch for use in the production of carbon filters
II
New Patents
The present invention relates to a high-strength, high-productivity perform wire for a carbon fiber reinforced aluminum composite material, which comprises: a continuous fiber bundle of carbon filaments having a 2/3-width ranging from 25 to 75 cm-l, as measured on the basis of Raman spectroscopy, the 2/3-width corresponding to 2/3 of the peak level of a Raman band obtained corresponding to a wave number of about 1,585 cm-l, the peak level attributed to E2g symmetric vibration of a graphite structure; one or two materials selected from the group consisting of carbon, silicon carbide, titanium, titanium carbide, boron, and titanium boride, the material(s) covering the individual fibers constituting the continuous fiber bundle; and a matrix consisting essentially of aluminum or aluminum alloy each of which contains 0.1% or less of copper and 0.45% or less of silicon, both by weight based on the weight of matrix, and infiltrated into the continuous fiber bundle.
4931162 PROCESS FOR PRODUCING CLEAN DISTILLATE PITCH AND/OR MESOPHASE PITCH FOR USE IN THE PRODUCTION OF CARBON FILTERS Hugh E Romine assigned to Conoco Inc A clean pitch suitable for the manufacture of carbon artifacts is obtained by distilling from an aromatic feedstock a distillate material free from mesophase forming resins. The distillate is heated to obtain a heat soaked distillate free from mesophase but containing mesophase forming resins. The heat soaked distillate is further heated with inert gas sparging to convert it to mesophase pitch suitable for manufacturing carbon fibers. The heat soaked distillate also finds use as a binder or impregnation pitch.
longitudinal direction, an oil additive in a volatile medium is applied to an organic fiber after it is removed from a container and while the volatile medium has not completely evaporated from the fiber, and before the fiber is fed to a flameproofing furnace.
4931247 FABRICATION METHOD OF A HOLLOW RACKET MADE OF CARBON FIBER Chien-Hwa Yeh, Tokyo The present invention relates to a method of fabricating a hollow recreational product, such as a racket, made of fibre or carbon fibre by providing a fibre sleeve tube mounted onto a racket filament mold and having several layers of overlapped woven boards wrapped about the entire filament mold. Several layers of woven boards of a shorter length are wrapped about the head of the filament mold. A fibre sleeve tube is disposed about the layers and the end of the head is sealed with a fibre cloth. The racket is then removed from the filament mold. An air blowing sleeve tube is placed into the opening of the tail of the embryonic mold of the racket and an air blowing nozzle is installed at the opening end of the air blowing sleeve tube. The assembly is placed into a die, air is blown into the embryonic mold and the mold is heated, so as to have the embryonic mold hardened and formed. Upon removal of the racket from the die and removal of the air blowing nozzle, a special adhesive agent is supplied through the tail hole. The tail hole is then sealed with resin and the mold is heated for a second time. After having the semi-product taken from the die, a small hole is drilled in the racket and the racket is coated. After the semiproduct has been coated and dried, air inside the racket is expelled through the small hole and the small hole is sealed with resin.
4931233 METHOD FOR ADDING ADDITIVES DURING MANUFACTURE OF CARBON FIBER Naomasa Miyahara, Hiroyuki Nakamura, Takashi Ohsaki, Tokyo, Japan assigned to Nikkiso Co Ltd In a method of manufacturing carbon fiber with less uniformity of physical strength in the
4933128 FORMATION OF MELT-SPUN ACRYLIC FIBERS WHICH ARE WELL SUITED FOR THERMAL CONVERSION TO HIGH STRENGTH CARBON FIBERS Gene P Daumit, Yoon Ko, Christopher R Slater, Jozef G Venner, Chi C Young, Maurice M Zwick assigned to BASF Aktiengesellschaft
New Patents
The present invention relates to a high-strength, high-productivity perform wire for a carbon fiber reinforced aluminum composite material, which comprises: a continuous fiber bundle of carbon filaments having a 2/3-width ranging from 25 to 75 cm-l, as measured on the basis of Raman spectroscopy, the 2/3-width corresponding to 2/3 of the peak level of a Raman band obtained corresponding to a wave number of about 1,585 cm-l, the peak level attributed to E2g symmetric vibration of a graphite structure; one or two materials selected from the group consisting of carbon, silicon carbide, titanium, titanium carbide, boron, and titanium boride, the material(s) covering the individual fibers constituting the continuous fiber bundle; and a matrix consisting essentially of aluminum or aluminum alloy each of which contains 0.1% or less of copper and 0.45% or less of silicon, both by weight based on the weight of matrix, and infiltrated into the continuous fiber bundle.
4931162 PROCESS FOR PRODUCING CLEAN DISTILLATE PITCH AND/OR MESOPHASE PITCH FOR USE IN THE PRODUCTION OF CARBON FILTERS Hugh E Romine assigned to Conoco Inc A clean pitch suitable for the manufacture of carbon artifacts is obtained by distilling from an aromatic feedstock a distillate material free from mesophase forming resins. The distillate is heated to obtain a heat soaked distillate free from mesophase but containing mesophase forming resins. The heat soaked distillate is further heated with inert gas sparging to convert it to mesophase pitch suitable for manufacturing carbon fibers. The heat soaked distillate also finds use as a binder or impregnation pitch.
longitudinal direction, an oil additive in a volatile medium is applied to an organic fiber after it is removed from a container and while the volatile medium has not completely evaporated from the fiber, and before the fiber is fed to a flameproofing furnace.
4931247 FABRICATION METHOD OF A HOLLOW RACKET MADE OF CARBON FIBER Chien-Hwa Yeh, Tokyo The present invention relates to a method of fabricating a hollow recreational product, such as a racket, made of fibre or carbon fibre by providing a fibre sleeve tube mounted onto a racket filament mold and having several layers of overlapped woven boards wrapped about the entire filament mold. Several layers of woven boards of a shorter length are wrapped about the head of the filament mold. A fibre sleeve tube is disposed about the layers and the end of the head is sealed with a fibre cloth. The racket is then removed from the filament mold. An air blowing sleeve tube is placed into the opening of the tail of the embryonic mold of the racket and an air blowing nozzle is installed at the opening end of the air blowing sleeve tube. The assembly is placed into a die, air is blown into the embryonic mold and the mold is heated, so as to have the embryonic mold hardened and formed. Upon removal of the racket from the die and removal of the air blowing nozzle, a special adhesive agent is supplied through the tail hole. The tail hole is then sealed with resin and the mold is heated for a second time. After having the semi-product taken from the die, a small hole is drilled in the racket and the racket is coated. After the semiproduct has been coated and dried, air inside the racket is expelled through the small hole and the small hole is sealed with resin.
4931233 METHOD FOR ADDING ADDITIVES DURING MANUFACTURE OF CARBON FIBER Naomasa Miyahara, Hiroyuki Nakamura, Takashi Ohsaki, Tokyo, Japan assigned to Nikkiso Co Ltd In a method of manufacturing carbon fiber with less uniformity of physical strength in the
4933128 FORMATION OF MELT-SPUN ACRYLIC FIBERS WHICH ARE WELL SUITED FOR THERMAL CONVERSION TO HIGH STRENGTH CARBON FIBERS Gene P Daumit, Yoon Ko, Christopher R Slater, Jozef G Venner, Chi C Young, Maurice M Zwick assigned to BASF Aktiengesellschaft