Patents by Inventor Masaharu Ueda
Masaharu Ueda 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).
-
Publication number: 20110303756Abstract: This pearlitic rail consists of a steel including: in terms of percent by mass, C: 0.65% to 1.20%; Si: 0.05% to 2.00%; Mn: 0.05% to 2.00%; and REM: 0.0005% to 0.0500%, with the balance being Fe and inevitable impurities, wherein, in a head portion of the rail, a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, and the hardness Hv of the head surface portion is in a range of 320 to 500.Type: ApplicationFiled: January 21, 2010Publication date: December 15, 2011Inventors: Masaharu Ueda, Takashi Morohoshi, Kazunori Seki
-
Publication number: 20110279541Abstract: A holder that holds a line recording head is displaced in a sheet width direction against the urging force of an elastic portion to bring an abutment portion of the holder into contact with one of a plurality of positioning surfaces provided at a reference portion of a sheet conveying mechanism. The holder is positioned and fixed to the reference portion, with the urging force exerted thereto.Type: ApplicationFiled: December 10, 2010Publication date: November 17, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Akira Kida, Masahiro Sugimoto, Masaharu Ueda
-
Publication number: 20110273510Abstract: A plurality of recording head units are supported by a holder in an integrated manner. The recording head units and pairs of rollers which hold a sheet are arranged alternately along a sheet conveying direction. An elastic member is disposed in a clearance between the holder and each of the recording head units supported by the holder in an elastically deformed manner to form an airtight seal. The airtight seal prevents upward leakage, from the clearance, of the humidifying gas introduced into the narrow space to which ink nozzles of the recording head units are exposed.Type: ApplicationFiled: December 10, 2010Publication date: November 10, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Masahiro Sugimoto, Akira Kida, Masaharu Ueda
-
Publication number: 20110226389Abstract: A pearlite rail contains, by mass %, 0.65 to 1.20% of C; 0.05 to 2.00% of Si; 0.05 to 2.00% of Mn; and the balance composed of Fe and inevitable impurities, wherein at least part of the head portion and at least part of the bottom portion has a pearlite structure, and the surface hardness of a portion of the pearlite structure is in a range of Hv320 to Hv500 and a maximum surface roughness of a portion of the pearlite structure is less than or equal to 180 ?m.Type: ApplicationFiled: August 13, 2010Publication date: September 22, 2011Applicant: NIPPON STEEL CORPORATIONInventors: Masaharu Ueda, Kyohei Sonoyama, Takuya Tanahashi, Teruhisa Miyazaki, Katsuya Iwano
-
Publication number: 20110211900Abstract: An image forming apparatus includes a first conveying unit provided downstream an image forming unit; a second conveying unit provided downstream the first conveying unit; a first cutting unit provided downstream the second conveying unit; and a second cutting unit provided downstream the first cutting unit. One of the first and second cutting units cuts an upstream end of an image on the continuous sheet, the other cuts a downstream end of the same image. The second conveying unit is stopped during the cutting by the first cutting unit to form a loop of the continuous sheet, and then if the cutting is ended, the second conveying unit conveys the continuous sheet at a higher conveyance speed than a conveyance speed by the first conveying unit to reduce the loop.Type: ApplicationFiled: December 10, 2010Publication date: September 1, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Masaharu Ueda, Akio Okubo
-
Patent number: 7972451Abstract: The present invention is: a pearlitic steel rail excellent in wear resistance and ductility, characterized in that, in a steel rail having pearlite structure containing, in mass, 0.65 to 1.40% C, the number of the pearlite blocks having grain sizes in the range from 1 to 15 ?m is 200 or more per 0.2 mm2 of an observation field at least in a part of the region down to a depth of 10 mm from the surface of the corners and top of the head portion; and a method for producing a pearlitic steel rail excellent in wear resistance and ductility, characterized by, in the hot rolling of said steel rail, applying finish rolling so that the temperature of the rail surface may be in the range from 850° C. to 1,000° C. and the sectional area reduction ratio at the final pass may be 6% or more, and then applying accelerated cooling to the head portion of said rail at a cooling rate in the range from 1 to 30° C./sec. from the austenite temperature range to at least 550° C.Type: GrantFiled: July 19, 2007Date of Patent: July 5, 2011Assignee: Nippon Steel CorporationInventors: Masaharu Ueda, Koichiro Matsushita, Kazuo Fujita, Katsuya Iwano, Koichi Uchino, Takashi Morohoshi, Akira Kobayashi
-
Publication number: 20110155821Abstract: This pearlite rail consists of a steel including: in terms of percent by mass, C: 0.65 to 1.20%; Si: 0.05 to 2.00%; Mn: 0.05 to 2.00%; P?0.0150%; S?0.0100%; Ca: 0.0005 to 0.0200%, and Fe and inevitable impurities as the balance, wherein a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, a hardness Hv of the pearlite structure is in a range of 320 to 500, and Mn sulfide-based inclusions having major lengths in a range of 10 to 100 ?m are present at an amount per unit area in a range of 10 to 200/mm2 in a cross-section taken along a lengthwise direction in the pearlite structure.Type: ApplicationFiled: October 30, 2009Publication date: June 30, 2011Inventors: Masaharu Ueda, Kazunori Seki, Takuya Satou, Takeshi Yamamoto
-
Patent number: 7828917Abstract: A rail manufacturing method is provided, in which a billet is hot-rolled into a rail form and the rail is cooled to ambient temperature. The foot part of the rail can be mechanically restrained to improve the straightness of the rail during at least the period of cooling where the surface temperature is between 800° C. and 400° C. In the subsequent cooling process, at least while the surface temperature of the foot of the rail is between 400° C. and 250° C., the rail is kept in an upright state, and cooled naturally without using insulation or accelerated cooling.Type: GrantFiled: January 7, 2005Date of Patent: November 9, 2010Assignee: Nippon Steel CorporationInventors: Noriaki Onodera, Takuya Satoh, Masaharu Ueda, Kazuo Fujita, Akira Kobayashi
-
Publication number: 20090314049Abstract: The invention provides a method for producing a pearlitic rail by subjecting to at least rough hot rolling and finish hot rolling a billet comprising, in mass %, C: 0.65-1.20%, Si: 0.05-2.00%, Mn: 0.05-2.00%, and a remainder of iron an unavoidable impurities, wherein the finish hot rolling is conducted by rolling at a rail head surface temperature in a range of not higher than 900° C. to not lower than Ar3 transformation point or Arcm transformation point to produce a head cumulative reduction of area of not less than 20% and a reaction force ratio of not less than 1.25, and the finish hot rolled rail head surface is subjected to accelerated cooling or spontaneous cooling to at least 550° C. at a cooling rate of 2 to 30° C./sec, thereby refining the rail head structure to attain a hardness within a predetermined range and improving rail wear resistance and ductility.Type: ApplicationFiled: July 24, 2007Publication date: December 24, 2009Inventors: Masaharu Ueda, Kazunori Seki, Takuya Sato, Takeshi Yamamoto
-
Publication number: 20090278853Abstract: This invention easily realizes a process of changing the display order of the candidates according to various input states. In a character input device of a mobile telephone, a wide variety of attributes representing an input state are set, and a conversion dictionary in which the attributes are registered in dictionary data of a corresponding word is set. An adjustment value setting unit determines the input state at a relative time point according to the start of input of the read character or the confirmation of the candidate, and sets an adjustment value to each attribute according to the determination content. A priority adjustment unit adjusts the priority with the adjustment value set to the attribute of the candidate for the candidate set with an attribute of each candidate extracted from the conversion dictionary by the read character string.Type: ApplicationFiled: April 29, 2009Publication date: November 12, 2009Inventors: MASAHARU UEDA, Takuya Nakayama
-
Publication number: 20090014099Abstract: A rail manufacturing method is provided, in which a billet is hot-rolled into a rail form and the rail is cooled to ambient temperature. The foot part of the rail can be mechanically restrained to improve the straightness of the rail during at least the period of cooling where the surface temperature is between 800° C. and 400° C. In the subsequent cooling process, at least while the surface temperature of the foot of the rail is between 400° C. and 250° C., the rail is kept in an upright state, and cooled naturally without using insulation or accelerated cooling.Type: ApplicationFiled: January 7, 2005Publication date: January 15, 2009Inventors: Noriaki Onodera, Takuya Satoh, Masaharu Ueda, Kazuo Fujita, Akira Kobayashi
-
Publication number: 20080011393Abstract: The present invention is: a pearlitic steel rail excellent in wear resistance and ductility, characterized in that, in a steel rail having pearlite structure containing, in mass, 0.65 to 1.40% C, the number of the pearlite blocks having grain sizes in the range from 1 to 15 ?m is 200 or more per 0.2 mm2 of an observation field at least in a part of the region down to a depth of 10 mm from the surface of the corners and top of the head portion; and a method for producing a pearlitic steel rail excellent in wear resistance and ductility, characterized by, in the hot rolling of said steel rail, applying finish rolling so that the temperature of the rail surface may be in the range from 850° C. to 1,000° C. and the sectional area reduction ratio at the final pass may be 6% or more, and then applying accelerated cooling to the head portion of said rail at a cooling rate in the range from 1 to 30° C./sec. from the austenite temperature range to at least 550° C.Type: ApplicationFiled: July 19, 2007Publication date: January 17, 2008Inventors: Masaharu Ueda, Koichiro Matsushita, Kazuo Fujita, Katsuya Iwano, Koichi Uchino, Takashi Morohoshi, Akira Kobayashi
-
Publication number: 20070181231Abstract: Disclosed are methods of producing steel rails having a high carbon content and being excellent in wear resistance and ductility from the slabs for rails. One method involves producing a steel rail having a high content of carbon, comprising finish rolling the rail in two consecutive passes, with a reduction rate per pass of a cross-section of the rail of 2-30%, wherein the conditions of the finish rolling satisfy the following relationship: S?800/(C×T), wherein S is the maximum rolling interval time (seconds), C is the carbon content of the steel, wherein the carbon content is 0.85-1.40 mass %, and T is the maximum surface temperature (° C.) of the rail head.Type: ApplicationFiled: March 9, 2005Publication date: August 9, 2007Inventors: Masaharu Ueda, Kazuo Pujita, Koichiro Matsushita, Takeshi Yamamoto, Takuya Satoh
-
Publication number: 20040187981Abstract: The present invention is: a pearlitic steel rail excellent in wear resistance and ductility, characterized in that, in a steel rail having pearlite structure containing, in mass, 0.65 to 1.40% C, the number of the pearlite blocks having grain sizes in the range from 1 to 15 &mgr;m is 200 or more per 0.2 mm2 of an observation field at least in a part of the region down to a depth of 10 mm from the surface of the corners and top of the head portion; and a method for producing a pearlitic steel rail excellent in wear resistance and ductility, characterized by, in the hot rolling of said steel rail, applying finish rolling so that the temperature of the rail surface may be in the range from 850° C. to 1,000° C. and the sectional area reduction ratio at the final pass may be 6% or more, and then applying accelerated cooling to the head portion of said rail at a cooling rate in the range from 1 to 30° C./sec. from the austenite temperature range to at least 550° C.Type: ApplicationFiled: December 29, 2003Publication date: September 30, 2004Inventors: Masaharu Ueda, Koichiro Matsushita, Kazuo Fujita, Katsuya Iwano, Koichi Uchino, Takashi Morohoshi, Akira Kobayashi
-
Patent number: 6254696Abstract: High-strength bainitic steel rails have improved resistances to surface fatigue failures and wear required of the head of rails for heavy-load service railroads. The high-strength bainitic steels rails having excellent resistances to surface fatigue failures and wear contain constituents of specific ranges and consisting of bainitic structures at least in part are characterized in that the total area occupied by carbides whose longer axes are 100 to 1000 nm in a given cross section of said bainitic structures accounts for 10 to 50 percent thereof.Type: GrantFiled: September 13, 1999Date of Patent: July 3, 2001Assignee: Nippon Steel CorporationInventors: Masaharu Ueda, Kouichi Uchino, Katsuya Iwano, Akira Kobayashi
-
Patent number: 6085874Abstract: An elevator system includes a counterweight assembly having a plurality of drive machines having integrally formed drive wheels adapted to frictionally engaged a guide rail for driving the counterweight assembly along the guide rail to effect movement of an elevator car.Type: GrantFiled: December 22, 1998Date of Patent: July 11, 2000Assignee: Otis Elevator CompanyInventors: Yasunobu Uchino, Kenji Nakagawa, Hirofumi Yuda, Masaharu Ueda, Yasuhisa Shioda, Takayuki Nagashima
-
Patent number: RE40263Abstract: This invention is directed to improve a wear resistance and a damage resistance required for a rail of a sharply curved zone of a heavy load railway, comprising more than 0.85 to 1.20% of C, 0.10 to 1.00% of Si, 0.40 to 1.50% of Mn and if necessary, at least one member selected from the group consisting of Cr, Mo, V, Nb, Co and B, and retaining high temperature of hot rolling or a steel rail heated to a high temperature for the purpose of heat-treatment, the present invention provides a pearlitic steel rail having a good wear resistance and a good damage resistance, and a method of producing the same, wherein a head portion of the steel rail is acceleratedly cooled at a rate of 1° to 10° C./sec from an austenite zone temperature to a cooling stop temperature of 700° to 500° C. so that the hardness of the head portion is at least Hv 320 within the range of a 20 mm depth.Type: GrantFiled: July 15, 1996Date of Patent: April 29, 2008Assignee: Nippon Steel CorporationInventors: Masaharu Ueda, Hideaki Kageyama, Kouichi Uchino, Koji Babazono, Ken Kutaragi
-
Patent number: RE41033Abstract: This invention is directed to improve a wear resistance and a damage resistance required for a rail of a sharply curved zone of a heavy load railway, comprising more than 0.85 to 1.20% of C, 0.10 to 1.00% of Si, 0.40 to 1.50% of Mn and if necessary, at least one member selected from the group consisting of Cr, Mo, V, Nb, Co and B, and retaining high temperature of hot rolling or a steel rail heated to a high temperature for the purpose of heat-treatment, the present invention provides a pearlitic steel rail having a good wear resistance and a good damage resistance, and a method of producing the same, wherein a head portion of the steel rail is acceleratedly cooled at a rate of 1° to 10° C./sec from an austenite zone temperature to a cooling stop temperature of 700° to 500° C. so that the hardness of the head portion is at least Hv 320 within the range of a 20 mm depth.Type: GrantFiled: November 13, 1995Date of Patent: December 8, 2009Assignee: Nippn Steel CorporationInventors: Masaharu Ueda, Hideaki Kageyama, Kouichi Uchino, Koji Babazono, Ken Kutaragi
-
Patent number: RE42360Abstract: This invention is directed to improve a wear resistance and a damage resistance required for a rail of a sharply curved zone of a heavy load railway, comprising more than 0.85 to 1.20% of C, 0.10 to 1.00% of Si, 0.40 to 1.50% of Mn and if necessary, at least one member selected from the group consisting of Cr, Mo, V, Nb, Co and B, and retaining high temperature of hot rolling or a steel rail heated to a high temperature for the purpose of heat-treatment, the present invention provides a pearlitic steel rail having a good wear resistance and a good damage resistance, and a method of producing the same, wherein a head portion of the steel rail is acceleratedly cooled at a rate of 1° to 10° C./sec from an austenite zone temperature to a cooling stop temperature of 700° to 500° C. so that the hardness of the head portion is at least Hv 320 within the range of a 20 mm depth.Type: GrantFiled: November 13, 1995Date of Patent: May 17, 2011Assignee: Nippon Steel CorporationInventors: Masaharu Ueda, Hideaki Kageyama, Kouichi Uchino, Koji Babazono, Ken Kutaragi
-
Patent number: RE42668Abstract: This invention is directed to improve a wear resistance and a damage resistance required for a rail of a sharply curved zone of a heavy load railway, comprising more than 0.85 to 1.20% of C, 0.10 to 1.00% of Si, 0.40 to 1.50% of Mn and if necessary, at least one member selected from the group consisting of Cr, Mo, V, Nb, Co and B, and retaining high temperature of hot rolling or a steel rail heated to a high temperature for the purpose of heat-treatment, the present invention provides a pearlitic steel rail having a good wear resistance and a good damage resistance, and a method of producing the same, wherein a head portion of the steel rail is acceleratedly cooled at a rate of 1° to 10° C./sec from an austenite zone temperature to a cooling stop temperature of 700° to 500° C. so that the hardness of the head portion is at least Hv 320 within the range of a 20 mm depth.Type: GrantFiled: November 13, 1995Date of Patent: September 6, 2011Assignee: Nippon Steel CorporationInventors: Masaharu Ueda, Hideaki Kageyama, Kouichi Uchino, Koji Babazono, Ken Kutaragi