Patents by Inventor Masahiro Kumagai
Masahiro Kumagai 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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Publication number: 20240102957Abstract: In an electrochemical gas sensor (10), a first sensing element (21) is stored in a first storage portion (31). A moisture permeable film (24) is disposed in a first introduction inlet (31A) of the first storage portion (31). The moisture permeable film (24) substantially prevents a to-be-detected gas from permeating therethrough. A second sensing element (22) is disposed in a space into which water vapor and the to-be-detected gas contained in a target gas flow. In such a configuration, the electrochemical gas sensor (10) is capable of detecting a to-be-detected gas having a concentration of 0 or more and 1 ppm or less.Type: ApplicationFiled: March 8, 2022Publication date: March 28, 2024Inventors: Shinichiro KITO, Masayuki SEGAWA, Takahiro YOKOYAMA, Junya IMAIZUMI, Yuki MIZUTANI, Masahiro TANAKA, Yoshiko KUMAGAI
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Patent number: 7946013Abstract: Provided is a driving jig for a closing cap which makes it possible to drive a closing cap straight into a bolt installation hole (11) formed in a track rail (1) and which allows this driving operation to be quickly repeated on a plurality of bolt installation holes (11). The jig includes a driving piston (73) and a guide holder (72) for maintaining the driving piston (73) in a predetermined attitude with respect to the track rail (1). The driving piston (72) has a pressing portion (75) coming into contact with an upper surface of the closing cap (70), and a hammering portion (74a) to be hammered by a tool. The guide holder has a cylinder (72a) in which the driving piston (73) slides, and has, at an opening at one end of the cylinder, a guide groove (77) into which an upper portion of the track rail is loosely fitted and which is orthogonal to an axial direction of the cylinder.Type: GrantFiled: November 15, 2006Date of Patent: May 24, 2011Assignees: THK Co., Ltd, THK GmbHInventor: Masahiro Kumagai
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Patent number: 7883269Abstract: A structure for closing a track rail mounting hole is disclosed, which prevents a closing cap from being press-fitted with an inclined state into the rail mounting hole, thereby being capable of positively preventing formation of a gap between the rail mounting hole and the closing cap. The closing cap includes a fitting portion having an outer diameter larger than an inner diameter of the rail mounting hole, to be press-fitted into the rail mounting hole; and a leading end portion to be inserted into the rail mounting hole before press-fitting the fitting portion into the rail mounting hole, for provisionally positioning the closing cap with respect to the rail mounting hole.Type: GrantFiled: December 15, 2005Date of Patent: February 8, 2011Assignees: THK Co., Ltd., THK GmbHInventors: Katsuya Iida, Yoshiaki Saito, Masahiro Kumagai, Reinhard G. Welle
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Publication number: 20090307888Abstract: Provided is a driving jig for a closing cap which makes it possible to drive a closing cap straight into a bolt installation hole (11) formed in a track rail (1) and which allows this driving operation to be quickly repeated on a plurality of bolt installation holes (11). The jig includes a driving piston (73) and a guide holder (72) for maintaining the driving piston (73) in a predetermined attitude with respect to the track rail (1). The driving piston (72) has a pressing portion (75) coming into contact with an upper surface of the closing cap (70), and a hammering portion (74a) to be hammered by a tool. The guide holder has a cylinder (72a) in which the driving piston (73) slides, and has, at an opening at one end of the cylinder, a guide groove (77) into which an upper portion of the track rail is loosely fitted and which is orthogonal to an axial direction of the cylinder.Type: ApplicationFiled: November 15, 2006Publication date: December 17, 2009Applicants: THK CO., LTD., THK GmbHInventor: Masahiro Kumagai
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Publication number: 20090010577Abstract: The present invention provides a structure for closing a track rail mounting hole, which prevents a closing cap from being press-fitted with an inclined state into the rail mounting hole, thereby being capable of positively preventing formation of a gap between the rail mounting hole and the closing cap. The closing cap (70) includes: a fitting portion (71) having an outer diameter larger than an inner diameter of the rail mounting hole (11b), to be press-fitted into the rail mounting hole (11b); and a leading end portion (72) to be inserted into the rail mounting hole (11b) before press-fitting the fitting portion (71) into the rail mounting hole (11b), for provisionally positioning the closing cap (70) with respect to the rail mounting hole (11b).Type: ApplicationFiled: December 15, 2005Publication date: January 8, 2009Applicants: THK CO., LTD., THK GMBHInventors: Katsuya Iida, Yoshiaki Saito, Masahiro Kumagai, Reinhard G. Welle
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Patent number: 7312276Abstract: A resin composition for coating a metal sheet comprising a polyester resin (A) having an intrinsic viscosity of 0.5-2.0 dl/g, an elastomer resin (B) and a vinyl polymer (C) containing at least 1 wt % of a unit with a polar group, and having a structure wherein the elastomer resin (B) is finely dispersed in the polyester resin (A) and at least a portion of the elastomer resin (B) is capsulated by the vinyl polymer (C). Also, metal-sheet-coating resin films using the resin composition, resin-coated metal sheets coated with the resin film, and resin-coated metal containers made by molding the resin-coated metal sheets are disclosed.Type: GrantFiled: April 19, 2004Date of Patent: December 25, 2007Assignee: Nippon Steel CorporationInventors: Hiroshi Ohishi, Masahiro Kumagai, Nobuo Kadowaki, Keiko Kawakami
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Publication number: 20040198907Abstract: A resin composition for coating a metal sheet comprising a polyester resin (A) having an intrinsic viscosity of 0.5-2.0 dl/g, an elastomer resin (B) and a vinyl polymer (C) containing at least 1 wt % of a unit with a polar group, and having a structure wherein the elastomer resin (B) is finely dispersed in the polyester resin (A) and at least a portion of the elastomer resin (B) is capsulated by the vinyl polymer (C). Also, metal-sheet-coating resin films using the resin composition, resin-coated metal sheets coated with the resin film, and resin-coated metal containers made by molding the resin-coated metal sheets are disclosed.Type: ApplicationFiled: April 19, 2004Publication date: October 7, 2004Applicant: Nippon Steel CorporationInventors: Hiroshi Ohishi, Masahiro Kumagai, Nobuo Kadowaki, Keiko Kawakami
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Patent number: 6783825Abstract: A resin composition for coating a metal sheet comprising a polyester resin (A) having an intrinsic viscosity of 0.5-2.0 dl/g, an elastomer resin (B) and a vinyl polymer (C) containing at least 1 wt % of a unit with a polar group, and having a structure wherein the elastomer resin (B) is finely dispersed in the polyester resin (A) and at least a portion of the elastomer resin (B) is capsulated by the vinyl polymer (C). Also, metal-sheet-coating resin films using the resin composition, resin-coated metal sheets coated with the resin film, and resin-coated metal containers made by molding the resin-coated metal sheets are disclosed.Type: GrantFiled: June 27, 2000Date of Patent: August 31, 2004Assignee: Nippon Steel CorporationInventors: Hiroshi Ohishi, Masahiro Kumagai, Nobuo Kadowaki, Keiko Kawakami
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Patent number: 4985288Abstract: A resonant frequency characteristic tag has a thin dielectric film made of a polymer such as polyethylene, and a pair of resonant frequency characteristic circuits each formed on each side of the thin dielectric film, made of a metal foil and having a particular resonant frequency, the two resonant frequency characteristic circuits have terminal sections short-circuited to one another. A release paper is applied by a pressure sensitive adhesive to the surface of one of the two resonant frequency characteristic circuits, and a through hole or opening(s) with a diameter in a range between 0.5 and 3 mm is formed at an electrode plate in a capacitor section of the circuit. The distance between the two electrode plates is adjusted to a predetermined dimension by heating and pressing a portion at the periphery of the through hole or opening(s) with a suitable tool.Type: GrantFiled: April 27, 1989Date of Patent: January 15, 1991Assignee: Tokai Metals Co., Ltd.Inventors: Takeshi Matsumoto, Yuji Suzuki, Masahiro Kumagai, Shinya Uchibori