Patents by Inventor Kazumitsu Hasegawa
Kazumitsu Hasegawa 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: 7967551Abstract: A casing provided centrally with a sealed structure chamber. Small-sized separate four filter elements are arranged each on opposite sides of the chamber such that inflow air from a suction section into the casing is introduced via the filter elements into the chamber. Each filter element is detachably fitted over a filter-element mount having openings at its outer periphery. Upon filter-element replacement, the filter elements are replaced individually by opening a window. An integral cast casing having compressing sections and compressed air passages integrally fabricated therewith by casting is formed with receptacles for first and second intercoolers and an aftercooler. The intercoolers and aftercooler are received in the receptacles. Outlets of the intercoolers are connected with suction sides of second- and third-stage compressors through second- and third-stage suction pipes, respectively. A blowoff silencer is arranged between the integral cast casing and an oil tank.Type: GrantFiled: September 4, 2009Date of Patent: June 28, 2011Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Toshimichi Taketomi, Kazumitsu Hasegawa, Yoshitaka Sasaki, Yoshiyuki Ogawa
-
Publication number: 20090320690Abstract: A casing provided centrally with a sealed structure chamber. Small-sized separate four filter elements are arranged each on opposite sides of the chamber such that inflow air from a suction section into the casing is introduced via the filter elements into the chamber. Each filter element is detachably fitted over a filter-element mount having openings at its outer periphery. Upon filter-element replacement, the filter elements are replaced individually by opening a window. An integral cast casing having compressing sections and compressed air passages integrally fabricated therewith by casting is formed with receptacles for first and second intercoolers and an aftercooler. The intercoolers and aftercooler are received in the receptacles. Outlets of the intercoolers are connected with suction sides of second- and third-stage compressors through second- and third-stage suction pipes, respectively. A blowoff silencer is arranged between the integral cast casing and an oil tank.Type: ApplicationFiled: September 4, 2009Publication date: December 31, 2009Applicant: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Toshimichi TAKETOMI, Kazumitsu Hasegawa, Yoshitaka Sasaki, Yoshiyuki Ogawa
-
Publication number: 20090320283Abstract: A casing provided centrally with a sealed structure chamber. Small-sized separate four filter elements are arranged each on opposite sides of the chamber such that inflow air from a suction section into the casing is introduced via the filter elements into the chamber. Each filter element is detachably fitted over a filter-element mount having openings at its outer periphery. Upon filter-element replacement, the filter elements are replaced individually by opening a window. An integral cast casing having compressing sections and compressed air passages integrally fabricated therewith by casting is formed with receptacles for first and second intercoolers and an aftercooler. The intercoolers and aftercooler are received in the receptacles. Outlets of the intercoolers are connected with suction sides of second- and third-stage compressors through second- and third-stage suction pipes, respectively. A blowoff silencer is arranged between the integral cast casing and an oil tank.Type: ApplicationFiled: September 4, 2009Publication date: December 31, 2009Applicant: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Toshimichi Taketomi, Kazumitsu Hasegawa, Yoshitaka Sasaki, Yoshiyuki Ogawa
-
Patent number: 7621717Abstract: A casing provided centrally with a sealed structure chamber. Small-sized separate four filter elements are arranged each on opposite sides of the chamber such that inflow air from a suction section into the casing is introduced via the filter elements into the chamber. Each filter element is detachably fitted over a filter-element mount having openings at its outer periphery. Upon filter-element replacement, the filter elements are replaced individually by opening a window. An integral cast casing having compressing sections and compressed air passages integrally fabricated therewith by casting is formed with receptacles for first and second intercoolers and an aftercooler. The intercoolers and aftercooler are received in the receptacles. Outlets of the intercoolers are connected with suction sides of second- and third-stage compressors through second- and third-stage suction pipes, respectively. A blowoff silencer is arranged between the integral cast casing and an oil tank.Type: GrantFiled: March 19, 2004Date of Patent: November 24, 2009Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Toshimichi Taketomi, Kazumitsu Hasegawa, Yoshitaka Sasaki, Yoshiyuki Ogawa
-
Patent number: 6841908Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.Type: GrantFiled: April 2, 2002Date of Patent: January 11, 2005Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Kazumitsu Hasegawa, Shinichi Ozaki, Toshio Takahashi, Gen Kuwata, Noriyasu Sugitani
-
Patent number: 6831385Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.Type: GrantFiled: April 29, 2003Date of Patent: December 14, 2004Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Kazumitsu Hasegawa, Shinichi Ozaki, Toshio Takahashi, Gen Kuwata, Noriyasu Sugitani
-
Publication number: 20030197440Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.Type: ApplicationFiled: April 29, 2003Publication date: October 23, 2003Applicant: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Kazumitsu Hasegawa, Shinichi Ozaki, Toshio Takahashi, Gen Kuwata, Noriyasu Sugitani
-
Publication number: 20030001446Abstract: Stator cores for a homo-polar magnetic bearing, wherein toothed ends of stator cores around a rotor form N poles and S poles adjacent in the axial direction, and the method of manufacturing them. The stator core 10 is provided with protrusions 11 of adjacent N and S poles extended circumferentially so as to be in contact with or in close proximity to each other, and is composed of U-shaped laminated steel sheets interleaved with an insulating material, of which the center side is open when viewed from the centerline side. In addition, the core is composed of a first yoke, a second yoke and a stem unit that is a magnetic body placed and fixed between the yokes, and at least the stem unit is composed of a magnetic material powder, solidified in resin.Type: ApplicationFiled: April 2, 2002Publication date: January 2, 2003Applicant: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Kazumitsu Hasegawa, Shinichi Ozaki, Toshio Takahashi, Gen Kuwata, Noriyasu Sugitani
-
Patent number: 6234749Abstract: A centrifugal compressor (1) including a single rotating shaft (5), a first (upstream) and second (downstream) impellers (2, 3) mounted on ends of the rotating shaft (5) respectively, and a casing (4) for accommodating these impellers. An air path (35) is provided for introducing an air pressurized by the upstream impeller (2) to the downstream impeller (3). An abradable layer (34) is embedded in the casing inner wall (4) such that it faces and is cut by the second downstream impeller (3). The expensive abradable layer (34) is only provided for the downstream impeller (3) since the effect of the abradable layer (34) is significant when provided for the downstream impeller.Type: GrantFiled: August 17, 1999Date of Patent: May 22, 2001Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Kazumitsu Hasegawa, Takashi Hokari, Shinichi Ozaki, Kanji Majima
-
Patent number: 6050780Abstract: A high speed compressor (10) includes a gear box (11), two compressing units (12, 13) supported on opposite side walls of the gear box (11) and a bull gear (32) rotatably placed in the gear box (11). Each compressing unit includes a scroll (15, 16) and an impeller (18, 19) rotatably housed in the scroll (15, 16). The impellers (18, 19) share an impeller shaft (22) extending into the gear box (11). A pinion gear (23) is mounted on the impeller shaft (22) such that it engages with the bull gear (32). A drive shaft (30) extends from the bull gear (32) out of the gear box (11) along a center axis of the gear box (11). An induction motor (35) is connected with the drive shaft (30) for causing the impellers (18, 19) to rotate by way of the bull gear (32) and the pinion gear (23). An inverter (40) is connected with the induction motor (35) at its one end and with a commercial power source (43) at the other end for converting an A.C. power from the commercial power source (43) into an A.C.Type: GrantFiled: October 16, 1996Date of Patent: April 18, 2000Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Kazumitsu Hasegawa, Shunichi Funabashi, Kanji Majima, Kiwamu Yamada, Shinichi Ozaki