Patents by Inventor Kunihiko Yokota
Kunihiko Yokota 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: 7350977Abstract: A ball bearing with double raceway rotatably supports a pinion shaft having a pinion gear on its one end. This ball bearing with double raceway is provided with: an outer ring member having a large-diameter raceway surface and a small-diameter raceway surface; an inner ring member having a large-diameter raceway surface and a small-diameter raceway surface that correspond to the large-diameter raceway surface and the small-diameter raceway surface of the outer ring member; a large-diameter-side row of balls that are interpolated between the two large-diameter raceway surfaces; a small-diameter-side row of balls that are interpolated between the two small-diameter raceway surfaces; a large-diameter-side cage that holds the large-diameter-side row of balls; and a small-diameter-side cage that holds the small-diameter-side row of balls.Type: GrantFiled: April 17, 2003Date of Patent: April 1, 2008Assignee: Jtekt CorporationInventors: Toshirou Fukuda, Hideo Ueda, Toshihiro Kawaguchi, Kunihiko Yokota, Motoshi Kawamura, Muneyasu Akiyama, Tomonori Nakashita
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Publication number: 20080069875Abstract: Disintegrating buccal tablets comprising a physiologically active material and a polyvinyl alcohol/polyethylene glycol graft copolymer are disclosed along with methods of making the same.Type: ApplicationFiled: September 10, 2005Publication date: March 20, 2008Applicant: BASF AktiengesellschaftInventors: Yoshitomi Kakiguchi, Kunihiko Yokota, Mitsunori Tanabe, Tomoyoshi Kajiura, Tadaaki Tanaka
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Patent number: 7320550Abstract: A tapered roller bearing includes an outer race, an inner race, a plurality of tapered rollers, and a cage. A small-diameter end portion of the inner race is formed with a small flange portion for limiting axial movement of the tapered rollers and a cylindrical portion which has a less diameter than the small flange portion and is connected to an axial outer end of the small flange portion. The cage is formed at a small-diameter end portion thereof with a bent portion which is bent inward in a radial direction. A small-diameter end portion of the cage has a bent portion which is faced to an outer surface of the cylindrical portion of the inner race with a predetermined clearance therefrom such that a labyrinth is created between the cage and the inner race.Type: GrantFiled: January 12, 2007Date of Patent: January 22, 2008Assignee: JTEKT CorporationInventors: Kenichi Ono, Kunihiko Yokota, Hiroshi Tachi
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Patent number: 7287911Abstract: The present invention relates to a bearing device for supporting a pinion shaft so as to freely rotate with respect to a case. The bearing device comprises a first tilt-contact rolling bearing provided on the connecting-flange-side outer peripheral surface of the pinion shaft and a second tilt-contact rolling bearing formed from an angular ball bearing provided on the pinion-gear-side outer peripheral surface of the pinion shaft, wherein lines of action of the first and second tilt-contact rolling bearings intersect with one another on an outer diameter side, the connecting-flange-side end portion of the first tilt-contact rolling bearing and the pinion-gear-side end portion of the second tilt-contact rolling bearing are respectively sealed with seal members, a sealed space between the seal members is infilled with grease, and the connecting flange is fastened in the pinion-gear direction to thereby preload the first and second tilt-contact rolling bearings.Type: GrantFiled: November 8, 2002Date of Patent: October 30, 2007Assignee: JTEKT CorporationInventors: Hirofumi Dodoro, Akiyuki Suzuki, Kanichi Kouda, Motoshi Kawamura, Kunihiko Yokota, Toshirou Fukuda
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Publication number: 20070218140Abstract: [Problem] To provide pharmaceutical preparations where the dissolution of an amine drug can be effectively controlled. [Resolution Means] Slow-release granules formed by providing a coating layer containing polyvinyl acetate and surfactant on drug-containing particles comprising an amine drug and a water-soluble binder coated onto the surface of a core material; together with a method for the production of slow-release granules which includes (i) a stage in which a liquid comprising an amine drug and a water-soluble binder dissolved or dispersed in an aqueous solvent is sprayed onto the surface of a core material and dried to form a drug layer, and (ii) a stage in which an aqueous coating liquid containing polyvinyl acetate and surfactant is sprayed onto the drug-containing particles obtained in stage (i) and dried to form a coating layer.Type: ApplicationFiled: April 15, 2005Publication date: September 20, 2007Applicant: BASF AKTIENGESELLSCHAFTInventors: Mitsunori Tanabe, Tadaaki Tanaka, Kunihiko Yokota, Yoshitomi Kakiguchi, Tomoyoshi Kajiura
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Publication number: 20070110352Abstract: A tapered roller bearing includes an outer race, an inner race, a plurality of tapered rollers, and a cage. A small-diameter end portion of the inner race is formed with a small flange portion for limiting axial movement of the tapered rollers and a cylindrical portion which has a less diameter than the small flange portion and is connected to an axial outer end of the small flange portion. The cage is formed at a small-diameter end portion thereof with a bent portion which is bent inward in a radial direction. A small-diameter end portion of the cage has a bent portion which is faced to an outer surface of the cylindrical portion of the inner race with a predetermined clearance therefrom such that a labyrinth is created between the cage and the inner race.Type: ApplicationFiled: January 12, 2007Publication date: May 17, 2007Applicant: Koyo Seiko Co., Ltd.Inventors: Kenichi Ono, Kunihiko Yokota, Hiroshi Tachi
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Patent number: 7175351Abstract: A tapered roller bearing comprises an outer race, an inner race, a plurality of tapered rollers, and a cage. A small-diameter end portion of the inner race is formed with a small flange portion for limiting axial movement of the tapered rollers and a cylindrical portion which has a less diameter than the small flange portion and is connected to an axial outer end of the small flange portion. The cage is formed at a small-diameter end portion thereof with a bent portion which is bent inward in a radial direction. A small-diameter end portion of the cage has a bent portion which is faced to an outer surface of the cylindrical portion of the inner race with a predetermined clearance therefrom such that a labyrinth is created between the cage and the inner race.Type: GrantFiled: February 10, 2005Date of Patent: February 13, 2007Assignee: Koyo Seiko Co., Ltd.Inventors: Kenichi Ono, Kunihiko Yokota, Hiroshi Tachi
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Publication number: 20050238273Abstract: A double row angular contact ball bearing with vertex of contact angles outside of bearing 6 is employed for supporting a pinion shaft 5, and an internal space of the bearing 6 is also sealed with seals 20 and 30 equipped at both ends thereof in a shaft direction, so that grease is filled in this sealed bearing internal space. In this case, oil being used for a target apparatus for use of the pinion shaft 5 is not introduced inside the bearing 6, so that problems which have been generated in a conventional example where said oil has been introduced inside the bearing 6 can be cleared up.Type: ApplicationFiled: December 11, 2003Publication date: October 27, 2005Applicant: Koyo Seiko Co., Ltd.Inventors: Motoshi Kawamura, Takeshi Iwawaki, Kunihiko Yokota
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Publication number: 20050232524Abstract: A ball bearing with double raceway rotatably supports a pinion shaft having a pinion gear on its one end. This ball bearing with double raceway is provided with: an outer ring member having a large-diameter raceway surface and a small-diameter raceway surface; an inner ring member having a large-diameter raceway surface and a small-diameter raceway surface that correspond to the large-diameter raceway surface and the small-diameter raceway surface of the outer ring member; a large-diameter-side row of balls that are interpolated between the two large-diameter raceway surfaces; a small-diameter-side row of balls that are interpolated between the two small-diameter raceway surfaces; a large-diameter-side cage that holds the large-diameter-side row of balls; and a small-diameter-side cage that holds the small-diameter-side row of balls.Type: ApplicationFiled: April 17, 2003Publication date: October 20, 2005Applicant: Koyo Seiko Co., Ltd.Inventors: Toshirou Fukuda, Hideo Ueda, Toshihiro Kawaguchi, Kunihiko Yokota, Motoshi Kawamura, Muneyasu Akiyama, Tomonori Nakashita
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Publication number: 20050220383Abstract: First and second annular clearances are formed between an outer peripheral surface of an annular portion of a cage and an inner peripheral surface of an annular piece of a first outer ring member, and between an inner peripheral surface of a baffle piece and an outer peripheral surface of a shoulder portion of a first inner ring member, respectively, and these radial widths are set to be larger than 0 and 0.15 times or less of a diameter of a ball, respectively.Type: ApplicationFiled: December 17, 2003Publication date: October 6, 2005Inventors: Kunihiko Yokota, Tomonori Nakashita, Hajime Tadumi, Kiyoshi Ogino, Hideo Ueda, Toshihiro Kawaguchi
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Publication number: 20050213861Abstract: A tapered roller bearing comprises an outer race, an inner race, a plurality of tapered rollers, and a cage. A small-diameter end portion of the inner race is formed with a small flange portion for limiting axial movement of the tapered rollers and a cylindrical portion which has a less diameter than the small flange portion and is connected to an axial outer end of the small flange portion. The cage is formed at a small-diameter end portion thereof with a bent portion which is bent inward in a radial direction. A small-diameter end portion of the cage has a bent portion which is faced to an outer surface of the cylindrical portion of the inner race with a predetermined clearance therefrom such that a labyrinth is created between the cage and the inner race.Type: ApplicationFiled: February 10, 2005Publication date: September 29, 2005Applicant: Koyo Seiko Co., Ltd.Inventors: Kenichi Ono, Kunihiko Yokota, Hiroshi Tachi
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Publication number: 20050031240Abstract: The present invention relates to a bearing device for supporting a pinion shaft so as to freely rotate with respect to a case. The bearing device comprises a first tilt-contact rolling bearing provided on the connecting-flange-side outer peripheral surface of the pinion shaft and a second tilt-contact rolling bearing formed from an angular ball bearing provided on the pinion-gear-side outer peripheral surface of the pinion shaft, wherein lines of action of the first and second tilt-contact rolling bearings intersect with one another on an outer diameter side, the connecting-flange-side end portion of the first tilt-contact rolling bearing and the pinion-gear-side end portion of the second tilt-contact rolling bearing are respectively sealed with seal members, a sealed space between the seal members is infilled with grease, and the connecting flange is fastened in the pinion-gear direction to thereby preload the first and second tilt-contact rolling bearings.Type: ApplicationFiled: November 8, 2002Publication date: February 10, 2005Inventors: Hirofumi Dodoro, Akiyuki Suzuki, Kanichi Kouda, Motoshi Kawamura, Kunihiko Yokota, Toshirou Fukuda
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Patent number: 6851863Abstract: According to this double row tapered roller bearing apparatus, an integral outer ring (2) is provided with oil vents (20) which extend from an inner peripheral face (17) in an area outward in an axial direction than a rolling face (2B) on which an axially outward row of conical rollers (7) rolls and passes through an outer peripheral face (18). Therefore, a portion of lubricating oil supplied from oil supply holes (13) in the integral outer ring (2) passes the oil vents (20) via the axially outward row of the conical rollers (7), and will be returned to a space in a housing (1) by way of a channel (31) in the housing (1). In conclusion, a circulating path of the lubricating oil through the outward row of the conical rollers (7) can be formed by the oil vents (20).Type: GrantFiled: December 4, 2002Date of Patent: February 8, 2005Assignee: Koyo Seiko Co., Ltd.Inventors: Kunihiko Yokota, Kanichi Kouda
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Patent number: 6770296Abstract: There is provide a novel process for producing a coated preparation composed of a hydrophilic core material coated with a coat material selected from hydrophobic hot-melt lipid to control dissolution of the core material in water and to prevent blocking during the production thereof. In this process, the melted coat material is added dropwise to the core material with fluidizing the core material to form at least one coating layer about the core material in the presence of, or by addition of &bgr;-form seed crystals of the coat material. Further, there is provided a water-soluble vitamin preparation having an improved flavor which contains a coated water-soluble vitamin having an unpleasant flavor produced by the novel process.Type: GrantFiled: September 17, 2002Date of Patent: August 3, 2004Assignee: BASF AktiengesellschaftInventors: Yoshitomi Kakiguchi, Kunihiko Yokota, Masaru Miyawaki
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Publication number: 20030106384Abstract: A contact angle (&agr;) of a row of tapered rollers (7) on a pinion shaft 1 is set to be 30°, and made larger than a contact angle (&bgr;) of a row of tapered rollers (8) which is 20°. This decreases a distribution of load in a radial direction on the row of the tapered rollers (7), and increases a distribution of load in a radial direction on the row of the tapered rollers (8). In this manner, the load in the radial direction on the row of the tapered rollers (7) and the load in the radial direction on the row of the tapered rollers (8) are made close to each other, so that unbalance of the loads in the radial direction between the two rows of the tapered rollers (7, 8) can be moderated, thus improving the supporting rigidity and the life.Type: ApplicationFiled: September 27, 2002Publication date: June 12, 2003Applicant: Koyo Seiko Co., Ltd.Inventors: Kunihiko Yokota, Kanichi Kouda
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Publication number: 20030108261Abstract: According to this double row tapered roller bearing apparatus, an integral outer ring (2) is provided with oil vents (20) which extend from an inner peripheral face (17) in an area outward in an axial direction than a rolling face (2B) on which an axially outward row of conical rollers (7) rolls and passes through an outer peripheral face (18). Therefore, a portion of lubricating oil supplied from oil supply holes (13) in the integral outer ring (2) passes the oil vents (20) via the axially outward row of the conical rollers (7), and will be returned to a space in a housing (1) by way of a channel (31) in the housing (1). In conclusion, a circulating path of the lubricating oil through the outward row of the conical rollers (7) can be formed by the oil vents (20).Type: ApplicationFiled: December 4, 2002Publication date: June 12, 2003Applicant: KOYO SEIKO CO., LTD.Inventors: Kunihiko Yokota, Kanichi Kouda
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Publication number: 20030091648Abstract: There is provide a novel process for producing a coated preparation composed of a hydrophilic core material coated with a coat material selected from hydrophobic hot-melt lipid to control dissolution of the core material in water and to prevent blocking during the production thereof. In this process, the melted coat material is added dropwise to the core material with fluidizing the core material to form at least one coating layer about the core material in the presence of, or by addition of &bgr;-form seed crystals of the coat material. Further, there is provided a water-soluble vitamin preparation having an improved flavor which contains a coated water-soluble vitamin having an unpleasant flavor produced by the novel process.Type: ApplicationFiled: September 17, 2002Publication date: May 15, 2003Inventors: Yoshitomi Kakiguchi, Kunihiko Yokota, Masaru Miyawaki
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Patent number: 6485742Abstract: There is provide a process for producing a coated preparation composed of a hydrophilic core material coated with a coat material selected from hydrophobic hot-melt lipid to control dissolution of the core material in water and to prevent blocking during the production thereof. In this process, the melted coat material is added dropwise to the core material with fluidizing the core material to form at least one coating layer about the core material in the presence of, or by addition of &bgr;-form seed crystals of the coat material. Further, there is provided a water-soluble vitamin preparation having an improved flavor which contains a coated water-soluble vitamin having an unpleasant flavor produced by the novel process.Type: GrantFiled: April 4, 2000Date of Patent: November 26, 2002Assignee: BASF AktiengesellschaftInventors: Yoshitomi Kakiguchi, Kunihiko Yokota, Masaru Miyawaki
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Patent number: 5064829Abstract: A composition which consists of a compound belonging to the Vitamin B group and having a solubility in water at 20.degree. C. of not more than 5%, and mannitol, is stable in itself and undergoes less influence under ambient humidity conditions.Its good flowability is retained during storage, only with very small changes, if any.Type: GrantFiled: March 27, 1990Date of Patent: November 12, 1991Assignee: Takeda Chemical Industries, Ltd.Inventors: Seiji Izuhara, Yoshitomi Kakiguchi, Kunihiko Yokota