Patents by Inventor Hirotsugu Kinoshita

Hirotsugu Kinoshita 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).

  • Patent number: 9932763
    Abstract: A vehicle door opening device opens and closes a door with a motor. In the vehicle door opening device, an opening reversible member on which an opening cable is wound is disposed on a top surface of a center guide rail, and a closing reversible member on which a closing cable is wound is disposed under a lower surface of the center guide rail. A moving member moves along the center guide rail and comprises a closing coupling portion to which the closing cable is coupled and an opening coupling portion to which the opening cable coupled. The closing cable moves along the lower surface of the center guide rail, and the opening cable moves along the top surface of the center guide rail.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: April 3, 2018
    Assignee: Mitsui Kinzoku Act Corporation
    Inventors: Naoya Seto, Hirotsugu Kinoshita, Shuntaro Kimura, Hiroshi Ishigaki
  • Publication number: 20160333626
    Abstract: A vehicle door opening device opens and closes a door on a vehicle body by a motor. A moving member moves along a guide rail fixed to the vehicle body and is connected to a door. An opening reversible member and a closing reversible member are disposed at one end and at the other end of the guide rail respectively and spaced in a direction perpendicular to a moving direction of the moving member. An opening cable and a closing cable are coupled to a closing coupling portion and a opening coupling portion of the moving member respectively. The closing coupling portion and the opening coupling portion are spaced from each other in a direction perpendicular to the moving direction of the moving member.
    Type: Application
    Filed: September 9, 2014
    Publication date: November 17, 2016
    Applicant: Mitsui Kinzoku Act Corporation
    Inventors: Naoya Seto, Hirotsugu Kinoshita, Shuntaro Kimura, Hiroshi Ishigaki
  • Patent number: 8513173
    Abstract: A lubricant composition for ball joints exhibits excellent low friction not only at ordinary temperatures but also from higher to lower temperatures, and will not leak out of ball joints at higher temperatures. A ball joint has the lubricant composition sealed therein. The lubricant composition contains a base oil including a synthetic hydrocarbon oil, a thickener, and a fatty acid salt of a compound represented by the formula (1): R1—NH—R2—NH2??(1) (R1: hydrocarbon group of C1 to C24; R2: alkylene group of C2 to C4).
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: August 20, 2013
    Assignee: Nippon Oil Corporation
    Inventors: Hirotsugu Kinoshita, Takashi Arai, Kiyomi Sakamoto
  • Patent number: 8183191
    Abstract: A grease composition containing a lubricant base oil, diurea compounds represented by the following general formulas (1) to (3), and at least one species selected from the group consisting of paraffin oxides and phosphorus compounds; wherein respective contents of the diurea compounds represented by the following general formulas (1) to (3) satisfy conditions defined by the following expressions (4) and (5); and wherein the total content of the paraffin oxides and phosphorus compounds is 0.1 to 15 mass % based on the total amount of the grease composition: where R1 is a hydrocarbon group containing an aromatic ring, R2 is a divalent hydrocarbon group, and R3 is a hydrocarbon group containing an aliphatic ring; 5?W1+W2+W3?30??(4) 0.3?(W1+0.5×W2)/(W1+W2+W3)?0.7??(5) where W1, W2, and W3 are respective contents (mass %) of the diurea compounds represented by general formulas (1) to (3) based on the total amount of the grease composition.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: May 22, 2012
    Assignee: Nippon Oil Corporation
    Inventors: Hirotsugu Kinoshita, Souichi Nomura, Takashi Arai, Kiyomi Sakamoto
  • Publication number: 20110318092
    Abstract: A lubricant composition for ball joints exhibits excellent low friction not only at ordinary temperatures but also from higher to lower temperatures, and will not leak out of ball joints at higher temperatures. A ball joint has the lubricant composition sealed therein. The lubricant composition contains a base oil including a synthetic hydrocarbon oil, a thickener, and a fatty acid salt of a compound represented by the formula (1): R1—NH—R2—NH2??(1) (R1: hydrocarbon group of C1 to C24; R2: alkylene group of C2 to C4).
    Type: Application
    Filed: September 6, 2011
    Publication date: December 29, 2011
    Applicant: NIPPON OIL CORPORATION
    Inventors: Hirotsugu Kinoshita, Takashi Arai, Kiyomi Sakamoto
  • Publication number: 20080132341
    Abstract: A grease composition to be encapsulated in a boot made from TPC for use in a tripot type constant velocity joint having a base oil, a thickener of a urea based compound, a solid molybdenum dithiocarbamate and an alkali metal borate hydrate, wherein the liquid component in the grease composition has a sulfur content of 0.6 mass % or less relative to the total amount of the liquid component.
    Type: Application
    Filed: November 25, 2005
    Publication date: June 5, 2008
    Inventors: Kazuo Momiyama, Hirotsugu Kinoshita, Kiyomi Sakamoto
  • Publication number: 20080026963
    Abstract: The present invention provides a grease composition for a one-way clutch that can achieve low-temperature engageability, anti-wear properties, and high-temperature prolonged working life in a high level and well-balanced manner. The grease composition comprises a synthetic oil with a last non-seizure load of 314 N or less, as determined by Four-Ball Extreme Pressure Test according to ASTM D2596 and a pour point of ?35° C. or lower and a thickner.
    Type: Application
    Filed: September 27, 2007
    Publication date: January 31, 2008
    Applicant: NIPPON OIL CORPORATION
    Inventors: Kiyomi SAKAMOTO, Takashi ARAI, Hirotsugu KINOSHITA
  • Publication number: 20070265179
    Abstract: A lubricant composition for ball joints exhibits excellent low friction not only at ordinary temperatures but also from higher to lower temperatures, and will not leak out of ball joints at higher temperatures. A ball joint has the lubricant composition sealed therein. The lubricant composition contains a base oil including a synthetic hydrocarbon oil, a thickener, and a fatty acid salt of a compound represented by the formula (1): R1—NH—R2—NH2??(1) (R1: hydrocarbon group of C1 to C24; R2: alkylene group of C2 to C4).
    Type: Application
    Filed: June 4, 2007
    Publication date: November 15, 2007
    Applicant: NIPPON OIL CORPORATION
    Inventors: Hirotsugu Kinoshita, Takashi Arai, Kiyomi Sakamoto
  • Patent number: 7256163
    Abstract: The grease composition of the present invention contains, in a lubricant base oil, 0.01 to 10% by mass of a fatty acid salt, 0.01 to 10% by mass of carbonate, 2 to 30% by mass of a thickener, and 0.1 to 20% by mass of a sulfur type extreme-pressure agent on the basis of the total amount of composition.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: August 14, 2007
    Assignee: Nippon Oil Corporation
    Inventors: Tamio Akada, Akihiko Kominami, Mitsuru Kishimoto, Akira Kohno, Hirotsugu Kinoshita, Souichi Nomura, Takashi Arai, Kiyomi Sakamoto
  • Publication number: 20070179066
    Abstract: The grease composition for constant velocity joints of the invention is characterized by comprising a lubricating base oil, a thickener, carbon black with a mean particle size of not greater than 500 nm, and an organic molybdenum compound. A grease composition for constant velocity joints according to the invention can achieve a highly satisfactory balance between anti-flaking, anti-seizure and anti-wear without using lead compounds, and can sufficiently maintain these properties with long-term use.
    Type: Application
    Filed: February 22, 2005
    Publication date: August 2, 2007
    Inventors: Kiyomi Sakamoto, Yukiharu Beppu, Hiroyuki Shibuya, Takashi Arai, Hirotsugu Kinoshita, Kazuhiko Ishibashi
  • Publication number: 20060111256
    Abstract: A grease composition comprising a lubricating base oil combined with (A) 2-30 wt % of a thickener and (B) 0.1-10 wt % of at least one type of compound selected from the group consisting of phosphorus compounds represented by general formulas (1) and (2) below and their metal salts or amine salts, based on the total weight of the composition. ?[wherein X1, X2 and X3 each represent an oxygen atom or sulfur atom, with at least two from among X1, X2 and X3 being oxygen atoms, and R1, R2 and R3 each represent hydrogen or a C1-30 hydrocarbon group] ?[wherein X4, X5, X6 and X7 each represent an oxygen atom or sulfur atom, with at least three from among X4, X5, X6 and X7 being oxygen atoms, and R4, R5 and R6 each represent hydrogen or a C1-30 hydrocarbon group].
    Type: Application
    Filed: July 24, 2003
    Publication date: May 25, 2006
    Inventors: Hirotsugu Kinoshita, Souichi Nomura, Takashi Arai, Kiyomi Sakamoto, Kazuhiro Yagishita
  • Publication number: 20060052257
    Abstract: A grease composition containing a lubricant base oil, diurea compounds represented by the following general formulas (1) to (3), and an organic molybdenum compound; wherein respective contents of the diurea compounds represented by the following general formulas (1) to (3) satisfy conditions defined by the following expressions (4) and (5); and wherein the organic molybdenum compound is contained by 0.1 to 20 mass % based on the total amount of the grease composition: where R1 is a hydrocarbon group containing an aromatic ring, R2 is a divalent hydrocarbon group, and R3 is a hydrocarbon group containing an aliphatic ring; 5?W1+W2+W3?30 ??(4) 0.1?(W1+0.5×W2)/(W1+W2+W3)?1.0 ??(5) where W1, W2, and W3 are respective contents (mass %) of the diurea compounds represented by general formulas (1) to (3) based on the total amount of the grease composition.
    Type: Application
    Filed: April 22, 2003
    Publication date: March 9, 2006
    Inventors: Hirotsugu Kinoshita, Souichi Nomura, Takashi Arai, Kiyomi Sakamoto
  • Publication number: 20050250653
    Abstract: A grease composition comprising a lubricating base oil, at least one diurea compound represented by one of the general formulas (1) to (3) below, a naphthenic acid salt, and succinic acid or a derivative thereof, wherein each of the proportions of the diurea compounds represented by general formulas (1) to (3) satisfies the conditions represented by inequalities (4) and (5) below, and each of the proportions of the naphthenic acid salt and the succinic acid or its derivative is 0.1-10% by mass based on the total amount of the grease composition. [wherein R1 represents a C7-12 aromatic ring-containing hydrocarbon group, R2 represents a C6-15 divalent hydrocarbon group, and R3 represents a cyclohexyl group or a C7-12 alkylcyclohexyl group] 5?W1+W2+W3?35??(4) 0?(W1+0.5×W2)/(W1+W2+W3)?0.55??(5) [wherein W1, W2 and W3 represent the proportions of diurea compounds represented by general formulas (1) to (3), respectively, based on the total amount of the grease composition (% by mass)].
    Type: Application
    Filed: May 28, 2003
    Publication date: November 10, 2005
    Inventors: Kenichi Iso, Michiharu Naka, Kiyomi Sakamoto, Hirotsugu Kinoshita
  • Publication number: 20050209115
    Abstract: A grease composition containing a lubricant base oil, diurea compounds represented by the following general formulas (1) to (3), and at least one species selected from the group consisting of paraffin oxides and phosphorus compounds; wherein respective contents of the diurea compounds represented by the following general formulas (1) to (3) satisfy conditions defined by the following expressions (4) and (5); and wherein the total content of the paraffin oxides and phosphorus compounds is 0.1 to 15 mass % based on the total amount of the grease composition: where R1 is a hydrocarbon group containing an aromatic ring, R2 is a divalent hydrocarbon group, and R3 is a hydrocarbon group containing an aliphatic ring; 5?W1+W2+W3?30 ??(4) 0.3?(W1+0.5×W2)/(W1+W2+W3)?0.7 ??(5) where W1, W2, and W3 are respective contents (mass %) of the diurea compounds represented by general formulas (1) to (3) based on the total amount of the grease composition.
    Type: Application
    Filed: April 22, 2003
    Publication date: September 22, 2005
    Inventors: Hirotsugu Kinoshita, Souichi Nomura, Takashi Arai, Kiyomi Sakamoto
  • Publication number: 20040198617
    Abstract: A lubricant composition for ball joints exhibits excellently low friction not only at ordinary temperatures but also from higher to lower temperatures, and will not leak out of ball joints at higher temperatures. A ball joint has the lubricant composition sealed therein.
    Type: Application
    Filed: December 31, 2003
    Publication date: October 7, 2004
    Inventors: Hirotsugu Kinoshita, Takashi Arai, Kiyomi Sakamoto
  • Publication number: 20030139302
    Abstract: The grease composition of the present invention contains, in a lubricant base oil, 0.01 to 10% by mass of a fatty acid salt, 0.01 to 10% by mass of carbonate, 2 to 30% by mass of a thickener, and 0.1 to 20% by mass of a sulfur type extreme-pressure agent on the basis of the total amount of composition.
    Type: Application
    Filed: November 21, 2002
    Publication date: July 24, 2003
    Applicant: NIPPON OIL CORPORATION
    Inventors: Tamio Akada, Akihiko Kominami, Mitsuru Kishimoto, Akira Kohno, Hirotsugu Kinoshita, Souichi Nomura, Takashi Arai, Kiyomi Sakamoto
  • Patent number: 6396018
    Abstract: There are provided an operating mechanism that drives the opening/closing of contacts, and a sliding conduction part that forms electrical connection of these contacts and the main circuit on receipt of a connection voltage; grease is applied to the mechanical sliding part of the operating mechanism and to the sliding conduction part. The grease has as base oil at least one synthetic oil and is selected from the group consisting of poly &agr;-olefins and dialkyl diphenyl ethers, and contains as thickener 5-30 mass % of a urea compound. The dynamic viscosity of the base oil is 30-500 mm2/s at 40° C.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: May 28, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hirotsugu Kinoshita, Kiyomi Sakamoto, Kimiya Sato, Makoto Kataoka, Atsushi Ohashi, Tomio Takahashi
  • Patent number: 5854183
    Abstract: A grease composition for constant-velocity joints which is prepared by blending a lube base oil with (A) a urea-urethane thickening agent comprising a mixture of(a) 20 to 95 mole % of a diurea compound of the formula (1): ##STR1## (b) 4 to 50 mole % of a urea-urethane compound of the formula (2): ##STR2## and (c) 1 to 50 mole % of a diurethane compound of the formula (3): ##STR3## with each mole percentage being based on the total amount of the components (a) to (c), wherein a ratio of the total number of R.sup.2 --NH--, R.sup.3 --NH-- and R.sup.5 --NH-- groups contained in the mixture to the total number of R.sup.6 --O--, R.sup.8 --O-- and R.sup.9 --O-- groups contained therein lies between 40:60 and 95:5,(B) at least one compound selected from oxidized paraffins, diphenyl hydrogenphosphite and hexamethylphosphoric triamide, and(C) at least one organomolybdenum compound selected from molybdenum dithiophosphate and molybdenum dithiocarbamate.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: December 29, 1998
    Assignees: Nippon Oil Co., Ltd., NTN Corporation
    Inventors: Yukio Hasegawa, Shinichi Takabe, Hirotsugu Kinoshita, Souichi Nomura, Fumihiro Itano
  • Patent number: 5370808
    Abstract: This invention relates to a filling grease composition for automobile wire harness connector which comprises a petroleum oil having an initial boiling point of 400.degree. C. or more and a gelling agent having the general formula: ##STR1## wherein R is a divalent aromatic group represented by a member: ##STR2## as essential components, and the content of said gelling agent ranging from 5 to 50% by weight on the basis of the whole composition.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: December 6, 1994
    Assignees: Nippon Oil Co., Ltd., Sumitomo Wiring Systems
    Inventors: Yasuhiko Onishi, Akihiro Yokono, Yoshinobu Kubo, Hirotsugu Kinoshita, Masaru Mishima, Makoto Sekiya
  • Patent number: 4396516
    Abstract: This invention is a lubricant comprising an imide compound obtained by reacting a dibasic acid selected from the group consisting of succinic acid, maleic acid, glutaric acid and phthalic acid with a primary amine having a C.sub.8 -C.sub.18 hydrocarbon radical.The lubricant of the invention may be used in combination with a specified diamine derivative and known lubricant additives, and exhibits excellent lubricating properties.
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: August 2, 1983
    Assignee: Nippon Oil Company, Ltd.
    Inventors: Hirotsugu Kinoshita, Hiroshi Uemura, Makoto Sekiya, Kazuyoshi Mitamura