Patents by Inventor Nobuki Nagami
Nobuki Nagami 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: 8727761Abstract: A die for an underwater cutting type pelletizer, the die including a die orifice part in which a thermoplastic resin is inhibited from solidifying within the die orifices. The die can have a reduced difference in temperature between the die orifice part and an inner periphery-side fixing part for fixing the die orifice part to a mixer/extruder, and can thereby inhibit the generation of thermal stress. The die is characterized by being equipped with a heating jacket for heating the inner periphery-side fixing part, the heating jacket being disposed within the inner periphery-side fixing part along an inner annular passage formed within either the die orifice part or the inner periphery-side fixing part or both along the boundary between the die orifice part and the inner periphery-side fixing part.Type: GrantFiled: December 10, 2009Date of Patent: May 20, 2014Assignee: Kobe Steel, Ltd.Inventors: Kazuo Iritani, Shin Iwasaki, Nobuki Nagami
-
Publication number: 20120009291Abstract: A die for an underwater cutting type pelletizer, the die including a die orifice part in which a thermoplastic resin is inhibited from solidifying within the die orifices. The die can have a reduced difference in temperature between the die orifice part and an inner periphery-side fixing part for fixing the die orifice part to a mixer/extruder, and can thereby inhibit the generation of thermal stress. The die is characterized by being equipped with a heating jacket for heating the inner periphery-side fixing part, the heating jacket being disposed within the inner periphery-side fixing part along an inner annular passage formed within either the die orifice part or the inner periphery-side fixing part or both along the boundary between the die orifice part and the inner periphery-side fixing part.Type: ApplicationFiled: December 10, 2009Publication date: January 12, 2012Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Kazuo Iritani, Shin Iwasaki, Nobuki Nagami
-
Patent number: 7470118Abstract: An underwater cutting pelletizer is disclosed wherein a water chamber is circular in plan, an inlet portion is formed on one side in a diametrical direction of the water chamber to introduce cooling water into the water chamber, and an outlet portion is formed on the other side in the diametrical direction of the water chamber to discharge the cooling water from the interior of the water chamber to the exterior, the inlet portion being in a divergent shape in an inflow direction of cooling water. The retention time of pellets in the interior of the water chamber can be made as short as possible.Type: GrantFiled: July 28, 2006Date of Patent: December 30, 2008Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Kazuhisa Fukutani, Koichi Honke, Kazuo Iritani, Nobuki Nagami
-
Patent number: 7338273Abstract: A cutter machine has a knife holder 13 mounted onto a cutter shaft 6 at the center portion, wherein a material to be cut is cut with knives 15 mounted onto the outer circumference of the knife holder 13 by rotating the knife holder 13 around the cutter shaft 6. The knife holder 13 is separated into a fixing member 17 mounted onto the cutter shaft 6 and a mounting member 18 onto which the knives 15 are mounted. The mounting member 18 is pivotally supported around two axes with respect to the fixing member 17. In the cutter machine, the knives and a die plate come into contact with each other by a small press force of the knives, thereby enabling a satisfactory cutting to be obtained.Type: GrantFiled: May 14, 2003Date of Patent: March 4, 2008Assignee: Kobe Steel, Ltd.Inventors: Masashi Konno, Nobuki Nagami, Yasuo Yoshii, Osamu Ikeda, Yoshiaki Nakata, Kazuo Iritani
-
Patent number: 7311514Abstract: In a die plate having a hardened surface for sliding a knife, a plurality of WC alloy plates 1b are diffusion-bonded to a base metal 2b, whereby the hardened surface h is formed. A plurality of nozzle holes 4a, 4a . . . are formed on each of the WC alloy plates 1b. Each of the WC alloy plates 1b is formed into a shape having a thickness of 2.5 mm or more and two adjacent edges 20 mm or more in length, wherein each edge is 200 mm or less in length. The die plate has high freedom in an arrangement of nozzle holes to enable a close arrangement of a number of nozzle holes, has an extended life with hardly causing dropping-off of a member constituting a hardened surface, and can be produced with a minimized number of processes.Type: GrantFiled: March 11, 2005Date of Patent: December 25, 2007Assignee: Kobe Steel, Ltd.Inventors: Osamu Tatsuda, Atsushi Shigeno, Nobuki Nagami, Masashi Konno, Hiroyuki Takeda
-
Publication number: 20070119286Abstract: An underwater cutting pelletizer is disclosed wherein a water chamber is circular in plan, an inlet portion is formed on one side in a diametrical direction of the water chamber to introduce cooling water into the water chamber, and an outlet portion is formed on the other side in the diametrical direction of the water chamber to discharge the cooling water from the interior of the water chamber to the exterior, the inlet portion being in a divergent shape in an inflow direction of cooling water. The retention time of pellets in the interior of the water chamber can be made as short as possible.Type: ApplicationFiled: July 28, 2006Publication date: May 31, 2007Inventors: Kazuhisa Fukutani, Koichi Honke, Kazuo Iritani, Nobuki Nagami
-
Publication number: 20050221102Abstract: In a die plate having a hardened surface for sliding a knife, a plurality of WC alloy plates 1b are diffusion-bonded to a base metal 2b, whereby the hardened surface h is formed. A plurality of nozzle holes 4a, 4a . . . are formed on each of the WC alloy plates 1b. Each of the WC alloy plates 1b is formed into a shape having a thickness of 2.5 mm or more and two adjacent edges 20 mm or more in length, wherein each edge is 200 mm or less in length. The die plate has high freedom in an arrangement of nozzle holes to enable a close arrangement of a number of nozzle holes, has an extended life with hardly causing dropping-off of a member constituting a hardened surface, and can be produced with a minimized number of processes.Type: ApplicationFiled: March 11, 2005Publication date: October 6, 2005Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Osamu Tatsuda, Atsushi Shigeno, Nobuki Nagami, Masashi Konno, Hiroyuki Takeda
-
Publication number: 20030213352Abstract: A cutter machine having a knife holder 13 mounted onto a cutter shaft 6 at the center portion, wherein a material to be cut is cut with knives 15 mounted onto the outer circumference of the knife holder 13 by rotating the knife holder 13 around the cutter shaft 6, characterized in that the knife holder 13 is separated into a fixing member 17 mounted onto the cutter shaft 6 and a mounting member 18 onto which the knives 15 are mounted, wherein the mounting member 18 is pivotally supported around more than two axes with respect to the fixing member 17. In the cutter machine, the knives and a die plate come into contact with each other by a small press force of the knives without any usage of the resilient effect resulting from a gum bush, a metal plate or the like, thereby enabling a satisfactory cutting to be obtained.Type: ApplicationFiled: May 14, 2003Publication date: November 20, 2003Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Masashi Konno, Nobuki Nagami, Yasuo Yoshii, Osamu Ikeda, Yoshiaki Nakata, Kazuo Iritani
-
Patent number: 6575720Abstract: The bearing cooling device causes cooling media to flow into the interior of a journal bearing 8 for supporting a shaft part 7 by lubrication of high viscous fluid and the interior of the shaft part 7 to cool the shaft part 7 and the bearing 8. At this time, cooling medium temperature of the bearing 8 is set to be higher than cooling medium temperature of the shaft part 7. It is constituted so that the cooling medium passes the cooling medium passage and thereafter passes the cooling medium passage internally of the bearing. A heated medium supply device for supplying a heated medium to each cooling medium passage may be provided. The bearing cooling device is used suitably for a gear pump.Type: GrantFiled: November 1, 2001Date of Patent: June 10, 2003Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Shigehiro Kasai, Katsunori Takahashi, Nobuki Nagami, Kazuo Iritani
-
Patent number: 6524088Abstract: To provide a gear pump for carrying high viscous liquid, which keeps a bearing in a free state and enhances reliability relative to a leakage of cooling medium and a leakage of molten resins. The gear pump in which a pair of gear rotors 2 are supported on a body 1 of the gear pump through a bearing 6, a cover for preventing the bearing 6 from being slipped out is secured to the body 1, and a temperature adjusting medium passage 20 is formed in the bearing 6, wherein an inlet pipe 28 and an outlet pipe 29 to the temperature adjusting medium passage 20 are connected to the axial outer end of the bearing 6, an intermediate plate 10 is interposed between the axial outer end of the bearing 6 and the cover 11, the intermediate plate 10 being provided with an insert hole 31 for the inlet pipe 28 and the outlet pipe 29, the cover 11 being provided with a guide portion 32 having the inlet pipe 28 and the outlet pipe 29 loosely fitted therein to guide them to outside.Type: GrantFiled: November 1, 2001Date of Patent: February 25, 2003Assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Shigehiro Kasai, Shoji Yoshimura, Nobuki Nagami, Kazuo Iritani, Katsunori Takahashi
-
Publication number: 20020051723Abstract: The bearing cooling device causes cooling media to flow into the interior of a journal bearing 8 for supporting a shaft part 7 by lubrication of high viscous fluid and the interior of the shaft part 7 to cool the shaft part 7 and the bearing 8. At this time, cooling medium temperature of the bearing 8 is set to be higher than cooling medium temperature of the shaft part 7. It is constituted so that the cooling medium passes the cooling medium passage and thereafter passes the cooling medium passage internally of the bearing. A heated medium supply device for supplying a heated medium to each cooling medium passage may be provided. The bearing cooling device is used suitably for a gear pump.Type: ApplicationFiled: November 1, 2001Publication date: May 2, 2002Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Shigehiro Kasai, Katsunori Takahashi, Nobuki Nagami, Kazuo Iritani
-
Publication number: 20020051720Abstract: To provide a gear pump for carrying high viscous liquid, which keeps a bearing in a free state and enhances reliability relative to a leakage of cooling medium and a leakage of molten resins.Type: ApplicationFiled: November 1, 2001Publication date: May 2, 2002Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD)Inventors: Shigehiro Kasai, Shoji Yoshimura, Nobuki Nagami, Kazuo Iritani, Katsunori Takahashi
-
Patent number: 5756129Abstract: A filter member includes a breaker plate having an increased filtering area without any deterioration in screen back-up capability. This filter member is adapted to filter off impurities of resin melt and is disposed in a resin passage. The filter member includes a screen and a breaker plate for backing up the screen. The breaker plate has resin passageways in the form of elongated slits extending as intersecting the flow direction of resin material.Type: GrantFiled: February 29, 1996Date of Patent: May 26, 1998Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Yasuo Yoshii, Nobuki Nagami, Nobuhiro Yamasaki, Yoshiaki Nakata, Shinichi Fukumizu, Osamu Ikeda
-
Patent number: 5522714Abstract: A driving mechanism for driving a gear pump of a dual drive type having two shafts comprises a reversing gear having a pair of output shafts which rotate respectively in opposite directions at the same rotating speed, and a pair of gear couplings connecting the gear pump to the reversing gear. One of the pair of gear couplings comprises: a shaft, a first coupling head disposed on one end of the shaft, and a second coupling head disposed on the other end of the shaft. The number z.sub.1 of teeth of the component external spur gears and internal spur gears of the first coupling head is not equal to the number z.sub.2 of teeth of the component external spur gears and internal spur gears of the second coupling head.Type: GrantFiled: May 14, 1993Date of Patent: June 4, 1996Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Taiji Orimo, Masashi Konno, Shinichi Fukumizu, Nobuki Nagami, Jun Yamanaka, Toru Yomogida
-
Patent number: 5292237Abstract: A melt pump comprises a pump housing having an intake port and a discharge port and a pair of gear rotors. Each of the pair of gear rotors having a gear part and a shaft part integrated with each other, which are arranged within the pump housing in such a manner as to be rotatable in mutually meshing condition. The melt pump further comprises a recovering passage for guiding resin leaking through a clearance between the pump housing and each of the pair of gear rotors into the intake port, a cooling hole drilled inside each of the gear rotors while facing to each clearance forming region; and a pipe inserted into the cooling hole for supplying cooling liquid. A sleeve for lining the internal periphery of the cooling hole is located in the hole so as to utilize the inside of the sleeve as a cooling liquid passage.Type: GrantFiled: April 7, 1992Date of Patent: March 8, 1994Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Taii Orimo, Shinichi Fukumizu, Hideki Uota, Masashi Konno, Nobuki Nagami
-
Patent number: RE37681Abstract: A filter member includes a breaker plate having an increased filtering area without any deterioration in screen back-up capability. This filter member is adapted to filter off impurities of resin melt and is disposed in a resin passage. The filter member includes a screen and a breaker plate for backing up the screen. The breaker plate has resin passageways in the form of elongated slits extending as intersecting the flow direction of resin material.Type: GrantFiled: May 26, 2000Date of Patent: April 30, 2002Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Yasuo Yoshii, Nobuki Nagami, Nobuhiro Yamasaki, Yoshiaki Nakata, Shinichi Fukumizu, Osamu Ikeda