Patents by Inventor Kiyotaka Nakai
Kiyotaka Nakai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6216810Abstract: A front end module structure of a vehicle comprises a front end panel mounted on front side members of the vehicle, the front end panel including a metal-made upper reinforcement extending in the widthwise direction of the vehicle and having a horizontally thrown U-shaped, or closed, sectional configuration and a resin-made main body formed integrally with the upper reinforcement and so formed on the upper reinforcement that a part thereof may intrude into the sectional configuration thereof, the resin-made main body having formed therein at least a retaining portion, by which a radiator is retained, and an upper reinforcement portion fixed to front fender reinforcements of the vehicle. As a result of this, there is enhanced the rigidity of the upper reinforcement portion of the front end panel.Type: GrantFiled: March 23, 1998Date of Patent: April 17, 2001Assignee: Aisin Seiki Kabushiki KaishaInventors: Kiyotaka Nakai, Yoshiaki Yamamoto
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Patent number: 5880669Abstract: A compact-size variable resistance device has a terminal for electrical connection to an external device, a resistor that slidingly contacts with a brush, and connecting parts formed of an electro-conductive resin containing a thermoplastic resin. The electro-conductive resin connecting parts readily make reliable electrical interconnection of the terminal and the resistor when the connecting parts are joined by, for example, ultrasonic bonding.Type: GrantFiled: February 28, 1997Date of Patent: March 9, 1999Assignee: Aisin Seiki Kabushiki KaishaInventors: Akikazu Matsumoto, Kiyotaka Nakai, Wataru Kuwayama, Kiyohiro Fukaya, Yukihisa Oda
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Patent number: 5823094Abstract: A resinous cylinder comprises a cylindrical portion with an open end and a closed end, and is formed by flowing raw material of resin from the center of the closed end. A first attaching portion is disposed at the side of the open end of the cylindrical portion and has a hole for securing to a vehicle body. A flange portion has a second attaching portion disposed at the side of the closed end. The second attaching portion has a hole for securing the resinous cylinder to the vehicle body. A resin flowing portion is formed between the second attaching portion and the closed end of the cylindrical portion. A connecting portion connects the first attaching portion and the second attaching portion through a clearance with the cylindrical portion. A volume of the flange portion is reduced so that a resin flowing speed of the flange portion is faster than a resin flowing speed of the cylindrical portion.Type: GrantFiled: July 1, 1996Date of Patent: October 20, 1998Assignee: Aisin Seiki Kabushiki KaishaInventors: Motoyuki Shimizu, Minoru Hayashi, Kiyotaka Nakai
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Patent number: 5725940Abstract: A composite molded article which is produced by joining multilayer boards composed of fiber-reinforced thermoplastic resin onto the surface of a core material made of a foamed resin, and its production method.The composite molded article is constituted by a core material which is composed of a foamed resin molded into a desired shape, and the multilayer boards which are produced such that a plurality of prepregs containing reinforcement fiber by a volume content of not less than 30% and not more than 85% are laminated with the direction of the reinforcement fiber being different with respect to each other, and are heated to not less than a melting temperature of a thermoplastic resin contained therein so as to mutually glue the prepregs, and to remove air contained inside.Type: GrantFiled: October 27, 1993Date of Patent: March 10, 1998Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Hideo Sakai, Kojiro Motai, Satoru Kishi, Katsuyuki Morita, Nobuyuki Hosoyama, Hiroshi Tanabe, Shuji Iida, Kiyotaka Nakai
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Patent number: 5583177Abstract: There is disclosed a polyamide resin composition containing: (A) 85 to 95 parts by weight of a polyamide resin; (B) 5 to 15 parts by weight of wollastonite; (C) 3 to 10 parts by weight, to 100 parts by the total weight of ingredients (A) and (B), of a styrene copolymer modified with at least one modifier selected from the group consisting of unsaturated carboxylic acids and unsaturated dicarboxylic anhydrides; and (D) 0.5 to 5 parts by weight, to 100 parts by the total weight of ingredients (A) and (B), of a high-density polyethylene modified with at least one modifier selected from the group consisting of unsaturated carboxylic acids and unsaturated dicarboxylic anhydrides, the high-density polyethylene having a weight-average molecular weight of 50,000 to 400,000.Type: GrantFiled: June 10, 1994Date of Patent: December 10, 1996Assignees: Toyo Boseki Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Koji Kinoshita, Nori Yoshihara, Minoru Hayashi, Kiyotaka Nakai
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Patent number: 5506039Abstract: Sheet molding compounds which comprising two layers, one being a sheet molding compound layer containing a hollow, lightweight filler particles (referred to as Type A layer) and the other being another type of sheet molding compound layer not containing lightweight, hollow filler particles (referred to as Type B layer), with the above-mentioned Type A and Type B layers making up a consistently integrated structure.Type: GrantFiled: April 14, 1994Date of Patent: April 9, 1996Assignees: Dainippon Ink and Chemicals, Inc., Aisin Seiki Kabushiki KaishaInventors: Yoshiro Kimura, Fumiyoshi Yamada, Kiyotaka Nakai
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Patent number: 5431995Abstract: A light weight molding compound comprises an inner layer constituted by a thermosetting resin including a hollow filler, cloth layers constituted by woven or non-woven fabric adhered on the both surfaces of the inner layer, and surface layers constituted by a thermosetting resin including reinforcing fiber and integrally connected to the both surfaces of the inner layer by way of the cloth layers. The light weight sheet molding compound has superior surface quality to be painted after molding.Type: GrantFiled: May 20, 1993Date of Patent: July 11, 1995Assignee: Aisin Seiki Kabushiki KaishaInventors: Masahiro Narita, Kiyotaka Nakai, Masamichi Togo
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Patent number: 5283103Abstract: A fiber-reinforced plastic product comprises a first member which is formed by pressing from a sheet molding compound made of an unsaturated polyester resin and having a first portion which should be reinforced and a second portion having an area adjacent to the first portion, a second member made of a uni directional sheet molding compound made of the unsaturated polyester resin, including a bundle of glass fibers which is continuously formed so as to be arranged in the same direction, and overlayed on the first portion by the press formation, and a concave portion formed in the area. Thereby, the second member is prevented from expanding along the first member during the press formation.Type: GrantFiled: September 29, 1992Date of Patent: February 1, 1994Assignee: Aisin Seiki Kabushiki KaishaInventors: Kiyotaka Nakai, Masahiro Narita
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Patent number: 5125185Abstract: A weather strip for a door belt-molding disposed for sliding contact with a window glass to prevent water leakage between the door belt-molding and the window glass, comprising a root portion of which at least one portion is made of a material having a high coefficient of elasticity and resistance to permanent strain. The preferred materials are ethylene propylene rubber or a thermoplastic elastomer resin.Type: GrantFiled: March 29, 1991Date of Patent: June 30, 1992Assignee: Aisin Seiki Kabushiki KaishaInventors: Akihito Shiota, Yutaka Watanabe, Kiyotaka Nakai
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Patent number: 5110857Abstract: Ultravioletsetting resin composition contains fragmentary quartz glass powder in the ratio of 50 to 200 parts to 100 parts of the ultravioletsetting resin. The surface hardness of the ultravioletsetting resin of the present invention is increased in a short time by the application of ultraviolet rays.Type: GrantFiled: March 23, 1990Date of Patent: May 5, 1992Assignee: Aisin Seiki Kabushiki KaishaInventors: Akio Inagaki, Kiyotaka Nakai, Hitoshi Tauchi
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Patent number: 4939404Abstract: A vibration wave motor includes a stator with an upper surface at which is generated a travelling vibration, a rotor with a lower surface rotatably mounted on the upper surface of the stator, and an urging device for developing a frictional force between the upper surface of the stator and the lower surface of the rotor. A sheet member is attached to either the upper surface of the stator or the lower surface of the rotor and the sheet member includes a base member having ultra heat-resistant properties, a fluorine-contained resin and a filler in the form of fibers.Type: GrantFiled: April 24, 1989Date of Patent: July 3, 1990Assignee: Aisin Seiki Kabushiki KaishaInventors: Akio Inagaki, Kiyotaka Nakai, Hitoshi Tauchi
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Patent number: 4849048Abstract: A method of sealing electric and electonic parts, comprising employing two different ultraviolet-curing resins for upper and lower layer portions, respectively, the resin employed for the upper layer portion having a smaller specific gravity than that of the resin for the lower layer portion before the resins are cured, and simultaneously curing the resins by irradiation with an ultraviolet ray. The ultraviolet-curing resin employed for the upper layer portion is an epoxy acrylate or epoxy resin, while an urethane acrylate ultraviolet-curing resin is employed for the lower layer portion, and the thickness of the ultraviolet-curing resin employed for the upper layer portion is set at from 0.5 mm to 3 mm.Type: GrantFiled: June 10, 1987Date of Patent: July 18, 1989Assignee: Aisin Seiki Kabushiki KaishaInventors: Akio Inagaki, Kiyotaka Nakai, Hitoshi Tauchi
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Patent number: 4753416Abstract: An article, obtained by injection molding, includes a first member on which an electrical element such as a coil is provided or mounted and a second member, surrounding the first member, formed integrally therewith. A first radially inward projection of the second member is in abutment with a first annular flange of the first member. A second radially inward projection of the second member is fitted in and welded to a vee on the first annular flange. Such weld acts as a seal for water-proofing the electric element. For preventing separation of weld due to repetition of radial expansion of electrical element upon current application thereto, a connecting means is provided between the first radially inward projection and the first annular flange.Type: GrantFiled: February 25, 1987Date of Patent: June 28, 1988Assignee: Aisin Seiki Kabushiki KaishaInventors: Akio Inagaki, Kiyotaka Nakai, Kenji Yogo