Patents by Inventor Tomoyoshi Sakamoto
Tomoyoshi Sakamoto 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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Patent number: 10155268Abstract: A cutting edge configuration of a cutting tool for performing a cutting process on a surface (21) of a workpiece (19), the cutting tool including a rake face (3) provided with first and second cutting edges (11, 13), the cutting tool being moved relative to the surface-to-be-cut (21) with the first and second cutting edges (11, 13) cutting thereinto to thereby perform the cutting process, wherein the first cutting edge (11) is positioned ahead of the second cutting edge (13) in a cutting direction (z-direction) of the cutting tool to provide the rake face (3) with a feed-direction (y-direction) rake-angle, and the cutting tool is fed in a direction from a side of the second cutting edge (13) to a side of the first cutting edge (11).Type: GrantFiled: March 11, 2005Date of Patent: December 18, 2018Assignee: NISSAN MOTOR CO., LTD.Inventors: Kazuhiko Takashima, Tomoyoshi Sakamoto, Hiroshi Shimomura
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Patent number: 8827690Abstract: A hollow body molding device having molten resin injected into a main cavity, fluid is pressure-injected through a pressure port after the injection of molten resin, a floating core moves to the outlet side, the molten resin is extruded from the outlet simultaneously with the movement of the floating core, and a hollow molded body is molded, the hollow body molding device having a floating core storage portion connected to the main cavity and stores the floating core moved by the pressurized fluid, an auxiliary cavity stores molten resin discharged from the main cavity and the floating core storage portion, communication passages and which communicate the floating core storage portion and the auxiliary cavity with each other; and an opening and closing means that opens and closes the communication passages by sliding movement. In the hollow body molding device, each inlet cross-sectional area B of the communication passages is specified.Type: GrantFiled: November 30, 2011Date of Patent: September 9, 2014Assignee: RP Topla LimitedInventors: Tomoyoshi Sakamoto, Minoru Ojiro, Takashi Hirose, Yasuhiko Hata, Hiroki Katagiri
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Patent number: 8709333Abstract: The present invention includes injecting a molten resin into a main cavity, which has on its one end a pressure port provided with a floating core and on its other end a first outlet, and a branch cavity, which communicates with the main cavity and has on its end a second outlet allowed to open and close, injecting a pressurized fluid through the pressure port after the injection of the molten resin, and moving the floating core to the first outlet side, and, at the same time, extruding the molten resin from the first outlet to form a main pipe hollow, and opening the second outlet after the main pipe hollow reaches a portion at which the branch cavity communicates with the main cavity, and extruding the molten resin by the pressurized fluid from the second outlet to form the branch pipe hollow.Type: GrantFiled: January 21, 2010Date of Patent: April 29, 2014Assignee: RP Topla LimitedInventors: Minoru Ojiro, Tomoyoshi Sakamoto, Hiroki Katagiri
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Patent number: 8679397Abstract: A hollow body formed of a thermoplastic resin and having uniform inner diameter and thickness and an excellent inner surface smoothness, and, in particular, a pipe-shaped hollow body having a bent portion is manufactured by injection molding. A method of manufacturing a hollow body includes injecting a molten resin 8 into a mold cavity 2 of a mold 1, the mold cavity 2 having on its one end a pressure port 4 provided with a floating core 6 and on its other end an outlet 5, pressure-injecting a pressurized fluid through the pressure port 4 after the injection of the molten resin 8, and moving the floating core 6 toward the outlet 5, and, at the same time, extruding the molten resin 8 from the outlet 5.Type: GrantFiled: January 21, 2010Date of Patent: March 25, 2014Assignee: RP Topla LimitedInventors: Tomoyoshi Sakamoto, Minoru Ojiro, Hiroki Katagiri
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Patent number: 8550154Abstract: In a resin heat exchanger unit, a resin pipe having straight portions and curved portions and a plurality of resin fins are integrally molded and there can be realized high reliability, high heat exchange efficiency, and a simple manufacturing process. The resin heat exchanger unit includes a resin pipe (1), which has straight portions (2) and curved portions (3) provided alternatively and continuously, and a plurality of resin fins (4) connected to the pipe (1), the pipe (1) and the fins (4) being integrally injection-molded.Type: GrantFiled: March 13, 2009Date of Patent: October 8, 2013Assignee: RP Topla LimitedInventors: Minoru Ojiro, Yaushiko Hata, Hiroyuki Minezaki, Tomoyoshi Sakamoto, Hiroki Katagiri
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Publication number: 20130236591Abstract: The present invention provides a hollow body molding device which allows easy confirmation of passage of a floating core through a molded body and facilitates quality control at the site.Type: ApplicationFiled: November 30, 2011Publication date: September 12, 2013Applicant: RP TOPLA LIMITEDInventors: Tomoyoshi Sakamoto, Minoru Ojiro, Takashi Hirose, Yasuhiko Hata, Hiroki Katagiri
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Patent number: 8231953Abstract: A transparent plastic container which is transparent, allows good design and can be used for an anticounterfeit system that determines authenticity by visual check with the use of polarization property. A transparent plastic sheet of a polystyrene-based resin having a total light transmission of 85% or higher and a haze of 7% or less is subjected to vacuum, pneumatic or vacuum/pneumatic forming at a sheet temperature ranging from a glass transition temperature plus 50 degrees C. to a glass transition temperature plus 130 degrees C., thereby obtaining a transparent plastic container having a planar portion with a strain amount of 150 nm or less.Type: GrantFiled: July 11, 2007Date of Patent: July 31, 2012Assignees: NHK Spring Co., Ltd., RP Topla LimitedInventors: Itsuo Takeuchi, Tokio Sakauchi, Mutsumi Sasaki, Tomoyoshi Sakamoto, Masahiro Arai, Rie Maejima
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Publication number: 20120068388Abstract: A hollow body formed of a thermoplastic resin and having uniform inner diameter and thickness and an excellent inner surface smoothness, and, in particular, a pipe-shaped hollow body having a bent portion is manufactured by injection molding. A method of manufacturing a hollow body includes injecting a molten resin 8 into a mold cavity 2 of a mold 1, the mold cavity 2 having on its one end a pressure port 4 provided with a floating core 6 and on its other end an outlet 5, pressure-injecting a pressurized fluid through the pressure port 4 after the injection of the molten resin 8, and moving the floating core 6 toward the outlet 5, and, at the same time, extruding the molten resin 8 from the outlet 5.Type: ApplicationFiled: January 21, 2010Publication date: March 22, 2012Applicant: RP Topla LimitedInventors: Tomoyoshi Sakamoto, Minoru Ojiro, Hiroki Katagiri
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Publication number: 20110285057Abstract: The present invention provides a method of manufacturing a pipe with a branch, which utilizes the conventional pipe molding method using a floating core, and while taking advantage of the pipe molding method, various types of pipes with a branch can be integrally molded with a synthetic resin with high efficiency.Type: ApplicationFiled: January 21, 2010Publication date: November 24, 2011Inventors: Minoru Ojiro, Tomoyoshi Sakamoto, Hiroki Katagiri
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Publication number: 20110210482Abstract: A resin molded body can give a heat-insulating or radiation function of providing extremely good heat transfer, has high reliability, and is manufactured with a simple process at low cost. The resin molded body is formed by integrally injection molding of a pipe portion (1), which has at least a curved portion (3) and passes a fluid therethrough, and a flat plate portion (4).Type: ApplicationFiled: August 5, 2009Publication date: September 1, 2011Applicant: RP TOPLA LIMITEDInventors: Tomoyoshi Sakamoto, Yasuhiko Hata, Hiroyuki Minezaki, Hiroki Katagiri, Minoru Ojiro
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Publication number: 20100276133Abstract: In a resin heat exchanger unit, a resin pipe having straight portions and curved portions and a plurality of resin fins are integrally molded and there can be realized high reliability, high heat exchange efficiency, and a simple manufacturing process. The resin heat exchanger unit includes a resin pipe (1), which has straight portions (2) and curved portions (3) provided alternatively and continuously, and a plurality of resin fins (4) connected to the pipe (1), the pipe (1) and the fins (4) being integrally injection-molded.Type: ApplicationFiled: March 13, 2009Publication date: November 4, 2010Applicant: RP TOPLA LIMITEDInventors: Minoru OJIRO, Yasuhiko HATA, Hiroyuki MINEZAKI, Tomoyoshi SAKAMOTO, Hiroki KATAGIRI
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Publication number: 20100015378Abstract: A transparent plastic container which is transparent, allows good design and can be used for an anticounterfeit system that determines authenticity by visual check with the use of polarization property. A transparent plastic sheet of a polystyrene-based resin having a total light transmission of 85% or higher and a haze of 7% or less is subjected to vacuum, pneumatic or vacuum/pneumatic forming at a sheet temperature ranging from a glass transition temperature plus 50 degrees C. to a glass transition temperature plus 130 degrees C., thereby obtaining a transparent plastic container having a planar portion with a strain amount of 150 nm or less.Type: ApplicationFiled: July 11, 2007Publication date: January 21, 2010Applicant: NHK SPRING CO., LTD.Inventors: Itsuo Takeuchi, Tokio Sakauchi, Mutsumi Sasaki, Tomoyoshi Sakamoto, Masahiro Arai, Rie Maejima
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Publication number: 20090297283Abstract: A cutting edge configuration of a cutting tool for performing a cutting process on a surface (21) of a workpiece (19), the cutting tool including a rake face (3) provided with first and second cutting edges (11, 13), the cutting tool being moved relative to the surface-to-be-cut (21) with the first and second cutting edges (11, 13) cutting thereinto to thereby perform the cutting process, wherein the first cutting edge (11) is positioned ahead of the second cutting edge (13) in a cutting direction (z-direction) of the cutting tool to provide the rake face (3) with a feed-direction (y-direction) rake-angle, and the cutting tool is fed in a direction from a side of the second cutting edge (13) to a side of the first cutting edge (11).Type: ApplicationFiled: March 11, 2005Publication date: December 3, 2009Inventors: Kazuhiko Takashima, Tomoyoshi Sakamoto, Hiroshi Shimomura
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Patent number: 7597507Abstract: This insert type cutting instrument includes: an insert formed as a flat polygonal plate, and an instrument main body having a first through-hole and a second through-hole are formed in the insert. The insert is mounted on the seat so that the center of the first screw hole is located closer to the axis than the center of the first through-hole and is located closer to a base end of the body than the center of the first through-hole, and the center of the second screw hole is located closer to the axis than the center of a second through-hole and is located closer to the base end of the body than the center of the second through-hole. Each of the first screw hole and the second screw hole is formed to be orthogonal to an attachment surface of the insert seat.Type: GrantFiled: January 26, 2007Date of Patent: October 6, 2009Assignee: Mitsubishi Materials CorporationInventors: Tomoyoshi Sakamoto, Touru Narita
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Publication number: 20070177951Abstract: This insert type cutting instrument includes: an insert formed as a flat polygonal plate, and which has an upper surface formed as a rake surface and a lower surface; an instrument main body which has a recessed portion formed on an outer side surface of a head portion of the instrument main body; and an insert seat formed on a wall surface of the recessed portion facing in a normal rotation direction of the instrument main body, and to which the insert is attached so that the upper surface of the insert faces in the normal rotation direction of the instrument main body. A first through-hole and a second through-hole are formed in the insert. A first screw hole and a second screw hole are formed in the insert seat of the instrument main body so that the first screw hole separates from the second screw hole in an axial direction of the instrument main body.Type: ApplicationFiled: January 26, 2007Publication date: August 2, 2007Applicant: Mitsubishi Materials CorporationInventors: Tomoyoshi Sakamoto, Touru Narita
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Patent number: 6679657Abstract: In the tool for bore diameter work of the present invention, first and second insert restraining faces are provided opposite each other on a insert installation section, and have projecting V-shapes parallel to the longitudinal direction of a shank. The top and bottom faces of the insert have indented V-shapes in correspondence with the first and second insert restraining faces. When a clamp bolt is tightened, the first insert restraining face elastically changes shape toward the second insert restraining face, pressingly securing the insert in the shank. Therefore, the insert can be easily attached and removed, and high installation rigidity of the insert can be maintained.Type: GrantFiled: March 14, 2002Date of Patent: January 20, 2004Assignee: Mitsubishi Materials CorporationInventors: Hiroshi Shimomura, Tomoyoshi Sakamoto
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Publication number: 20020131831Abstract: In the tool for bore diameter work of the present invention, first and second chip restraining faces are provided opposite each other on a chip installation section, and have projecting V-shapes parallel to the longitudinal direction of a shank. The top and bottom faces of the chip have indented V-shapes in correspondence with the first and second chip restraining faces. When a clamp bolt is tightened, the first chip restraining face elastically changes shape toward the second chip restraining face, pressingly securing the chip in the shank. Therefore, the chip can be easily attached and removed, and high installation rigidity of the chip can be maintained.Type: ApplicationFiled: March 14, 2002Publication date: September 19, 2002Inventors: Hiroshi Shimomura, Tomoyoshi Sakamoto
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Patent number: 4974577Abstract: An apparatus for collecting wafers sliced from a semiconductor crystal rod, and the apparatus includes a primary mobile member, a secondary mobile member and a wafer collecting assembly. The primary mobile member is movable toward and away the crystal rod, and the secondary mobile member is mounted on the primary mobile means and is movable relative to the primary mobile member in a direction toward and away from the semiconductor crystal rod. The wafer collecting assembly is mounted on the second mobile member for collecting the wafers sliced from the semiconductor crystal rod.Type: GrantFiled: January 3, 1990Date of Patent: December 4, 1990Assignee: Mitsubishi Kinzoku Kabushiki KaishaInventors: Seiichi Abe, Yoshitaka Shiratori, Tomoyoshi Sakamoto
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Patent number: 4899719Abstract: An apparatus for collecting wafers sliced from a semiconductor crystal rod, and the apparatus includes a primary mobile member, a secondary mobile member and a wafer collection assembly. The primary mobile member is movable toward and away from the crystal rod, and the secondary mobile member is mounted on the primary mobile member and is movable relative to the primary mobile member in a direction toward and away from the semiconductor crystal rod. The wafer collecting assembly is mounted on the second mobile member for collecting the wafers sliced from the semiconductor crystal rod.Type: GrantFiled: July 22, 1988Date of Patent: February 13, 1990Assignee: Mitsubishi Kinsoku Kabushiki KaishaInventors: Seiichi Abe, Yoshitaka Shiratori, Tomoyoshi Sakamoto