Patents by Inventor Masafumi Hamasaki
Masafumi Hamasaki 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: 10766120Abstract: A method for manufacturing a compressor scroll that appropriately impinges cavitation bubbles on target regions of a scroll. The method includes the step of water jet peening by jetting cavitation bubbles generated underwater by a water jet at a first side of an end plate (13A) of the scroll (13), with a center (P1, P2, P3) of the cavitation bubbles being offset from a center (O) of the spiral shape of a wall portion (13B) on the end plate (13A) and the step portion (13Aa) and the stepped portion (13Ba) positioned at an outer peripheral portion of the cavitation bubbles (C).Type: GrantFiled: August 6, 2015Date of Patent: September 8, 2020Assignee: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.Inventors: Takayuki Hagita, Takaharu Maeguchi, Masafumi Hamasaki, Yukio Michishita, Yukihiro Kawai, Hiroshi Ogawa, Makoto Takeuchi, Kazuhide Watanabe, Takayuki Kuwahara, Masaki Kawasaki, Katsuhiro Fujita
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Patent number: 10107290Abstract: This scroll compressor is a scroll compressor provided with a housing and a scroll compression mechanism provided inside the housing, the interior of the housing being provided with an discharge cavity for discharge high-pressure gas compressed by the scroll compression mechanism, wherein: the housing is configured from a front housing and a rear housing for closing the rear-end opening of the front housing; a fixed scroll is integrally molded on the rear housing with a rib part interposed therebetween; the discharge cavity, into which an discharge port for discharging high-pressure gas opens, is provided around the periphery of the rib part; and an discharge valve for opening and closing the discharge port is installed in the discharge cavity.Type: GrantFiled: May 29, 2015Date of Patent: October 23, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.Inventors: Takayuki Hagita, Masafumi Hamasaki
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Publication number: 20170239785Abstract: A method for manufacturing a compressor scroll that appropriately impinges cavitation bubbles on target regions of a scroll. The method includes the step of water jet peening by jetting cavitation bubbles generated underwater by a water jet at a first side of an end plate (13A) of the scroll (13), with a center (P1, P2, P3) of the cavitation bubbles being offset from a center (O) of the spiral shape of a wall portion (13B) on the end plate (13A) and the step portion (13Aa) and the stepped portion (13Ba) positioned at an outer peripheral portion of the cavitation bubbles (C).Type: ApplicationFiled: August 6, 2015Publication date: August 24, 2017Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.Inventors: Takayuki HAGITA, Takaharu MAEGUCHI, Masafumi HAMASAKI, Yukio MICHISHITA, Yukihiro KAWAI, Hiroshi OGAWA, Makoto TAKEUCHI, Kazuhide WATANABE, Takayuki KUWAHARA, Masaki KAWASAKI, Katsuhiro FUJITA
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Publication number: 20170167490Abstract: This scroll compressor is a scroll compressor provided with a housing and a scroll compression mechanism provided inside the housing, the interior of the housing being provided with an discharge cavity for discharge high-pressure gas compressed by the scroll compression mechanism, wherein: the housing is configured from a front housing and a rear housing for closing the rear-end opening of the front housing; a fixed scroll is integrally molded on the rear housing with a rib part interposed therebetween; the discharge cavity, into which an discharge port for discharging high-pressure gas opens, is provided around the periphery of the rib part; and an discharge valve for opening and closing the discharge port is installed in the discharge cavity.Type: ApplicationFiled: May 29, 2015Publication date: June 15, 2017Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.Inventors: Takayuki HAGITA, Masafumi HAMASAKI
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Patent number: 9261148Abstract: An electromagnetic clutch includes an armature 42 having a rotor contact surface 46a segmented in the radial direction by an annular groove 44 to form a plurality of rings, the groove being formed concentrically with the armature 42 for obstructing magnetic flux; and a rotor 43 having a contact surface, wherein the armature 42 is attracted toward the contact surface of the rotor 43 by magnetic force caused by an electromagnetic coil to couple the armature with the rotor for transmitting power. The armature 42 is formed by the steps of: preparing an armature material 42 with a groove 44 formed thereon, the groove having a width of w1; and narrowing the groove width from w1 to w2 by applying pressure on a pressed portion 47 in a peripheral edge region of the groove 44 to cause plastic flow in a horizontal direction along the material 42.Type: GrantFiled: March 28, 2012Date of Patent: February 16, 2016Assignee: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.Inventors: Masafumi Hamasaki, Masaki Kawasaki
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Publication number: 20140311852Abstract: An electromagnetic clutch includes an armature 42 having a rotor contact surface 46a segmented in the radial direction by an annular groove 44 to form a plurality of rings, the groove being formed concentrically with the armature 42 for obstructing magnetic flux; and a rotor 43 having a contact surface, wherein the armature 42 is attracted toward the contact surface of the rotor 43 by magnetic force caused by an electromagnetic coil to couple the armature with the rotor for transmitting power. The armature 42 is formed by the steps of: preparing an armature material 42 with a groove 44 formed thereon, the groove having a width of w1; and narrowing the groove width from w1 to w2 by applying pressure on a pressed portion 47 in a peripheral edge region of the groove 44 to cause plastic flow in a horizontal direction along the material 42.Type: ApplicationFiled: March 28, 2012Publication date: October 23, 2014Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.Inventors: Masafumi Hamasaki, Masaki Kawasaki
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Patent number: 8851259Abstract: When grooves 44, 45A and 45B of an armature 42 and a rotor 43 are formed by laser beam machining, a metal oxide layer 100 is formed on wall surfaces defining the grooves 44, 45A and 45B. The metal oxide layer 100 is brought into sliding contact with a first contact surface A1 to a fourth contact surface A4 in a process in which an electromagnetic clutch is used, so that a part of the metal oxide layer 100 is ground and peeled off, whereby particles made of a metal oxide are produced. The particles enter the contact surface between the armature 42 and the rotor 43, which increases the frictional force therebetween to thereby prevent slippage. As a result, the torque transmission capability of the electromagnetic clutch M is enhanced, and the increase in the torque of a scroll compressor is achieved.Type: GrantFiled: June 17, 2010Date of Patent: October 7, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Masafumi Hamasaki, Masanori Takahashi, Shinichi Isobe
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Patent number: 8757242Abstract: Provided is a die-casting die which is less likely to cause gas defects. A die-casting die in which a runner (1) is branched at a branch section (3), and cavities are connected to the respective downstream ends of the branched runner, wherein the runner (1) comprises a main runner (2) that is located upstream of the branch section (3) and a plurality of sub-runners (4) that are located downstream from the branch section (3), a volume section (5) having an opening (6) that opens toward the main runner (2) is formed at a portion of the branch section (3) that represents an extension of the direction of the main runner (2), and the width of the opening (6) is greater than the width of the main runner (2).Type: GrantFiled: October 11, 2011Date of Patent: June 24, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventor: Masafumi Hamasaki
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Publication number: 20130056168Abstract: Provided is a die-casting die which is less likely to cause gas defects. A die-casting die in which a runner (1) is branched at a branch section (3), and cavities are connected to the respective downstream ends of the branched runner, wherein the runner (1) comprises a main runner (2) that is located upstream of the branch section (3) and a plurality of sub-runners (4) that are located downstream from the branch section (3), a volume section (5) having an opening (6) that opens toward the main runner (2) is formed at a portion of the branch section (3) that represents an extension of the direction of the main runner (2), and the width of the opening (6) is greater than the width of the main runner (2).Type: ApplicationFiled: October 11, 2011Publication date: March 7, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventor: Masafumi Hamasaki
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Publication number: 20120156062Abstract: When grooves 44, 45A and 45B of an armature 42 and a rotor 43 are formed by laser beam machining, a metal oxide layer 100 is formed on wall surfaces defining the grooves 44, 45A and 45B. The metal oxide layer 100 is brought into sliding contact with a first contact surface A1 to a fourth contact surface A4 in a process in which an electromagnetic clutch is used, so that a part of the metal oxide layer 100 is ground and peeled off, whereby particles made of a metal oxide are produced. The particles enter the contact surface between the armature 42 and the rotor 43, which increases the frictional force therebetween to thereby prevent slippage. As a result, the torque transmission capability of the electromagnetic clutch M is enhanced, and the increase in the torque of a scroll compressor is achieved.Type: ApplicationFiled: June 17, 2010Publication date: June 21, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Masafumi Hamasaki, Masanori Takahashi, Shinichi Isobe
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Publication number: 20090120538Abstract: An object is to provide an aluminum die cast product, e.g., a pressure vessel that requires high airtightness, in which pressure leak or gas leak ratio can be reduced and the product yield can be increased and also to provide a method for manufacturing the product. An aluminum die cast product in which a cast hole is formed by a core pin in a thick portion that is made thicker than other portions, wherein a chill layer with a secondary dendrite arm spacing of at least 5.5 ?m or less is provided at the surface of the cast hole.Type: ApplicationFiled: May 30, 2008Publication date: May 14, 2009Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Masafumi HAMASAKI, Kazuhiko INOGUCHI, Masaya HATANAKA, Masaki KAWASAKI, Shinji SAHO
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Publication number: 20080053637Abstract: A method and an apparatus for manufacturing an aluminum die-cast product are provided, wherein an occurrence of shrinkage cavity is eliminated or reduced to a very small amount, and a sound and high-quality aluminum die-cast product having no casting defect can be produced. The method for manufacturing an aluminum die-cast product by performing die casting while a part, in which a casting defect tends to occur due to solidification shrinkage of a melt, which has been pressure-filled in a mold, during a solidification process, is pressurized with a local pressurization pin includes the steps of allowing the local pressurization pin to follow the movement of a solidification interface based on a solidification interface movement speed, which is calculated in advance, of the melt and keeping pushing the local pressurization pin in until the solidification is completed.Type: ApplicationFiled: February 22, 2007Publication date: March 6, 2008Applicant: Mitsubishi Heavy Industries, Ltd.Inventors: Masafumi Hamasaki, Kazuhiko Inoguchi, Masaya Hatanaka, Shinji Saho
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Patent number: 4895135Abstract: A self-heating container is capable of generating heat by hydration of an exothermic rection agent and includes an outer shell, an envelope enclosing the exothermic reaction agent, a water bag filled with water for reaction with the agent, and a container body for containing foodstuff. The container body is formed of a sheet member including a metal foil and a synthetic resin layer attached on at least one side of the metal foil. The sheet member is folded to have a W-shaped cross section and is heat-sealed along the vertical and upper edges. The inverted V-shaped portion of the folded sheet defines a chamber for accommodating the envelope outside the container body.Type: GrantFiled: August 2, 1988Date of Patent: January 23, 1990Assignees: Fukubi Kagaku Kogyo Kabushiki Kaisha, Chori Company, Ltd., Hama Corporation Co., Ltd.Inventor: Masafumi Hamasaki
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Patent number: 4773389Abstract: A self-heating foodstuff container is capable of generating heat by utilizing an exothermic reaction and includes a body having a first chamber for containing a foodstuff and a second chamber for receiving an exothermic reaction agent, and a liquid container including a body portion and a conduit connected to the body portion for discharging the liquid into the second chamber. The body portion is disposed outside of the second chamber and is capable of contracting upon pressure. The container further includes a support member carrying the body portion and slidably mounted with respect to the body in such a manner that the sliding movement of the support member presses the body portion and causes the liquid to discharge through the conduit into the second chamber for initiating the exothermic reaction.Type: GrantFiled: February 5, 1987Date of Patent: September 27, 1988Assignees: Chori Company, Ltd., Fukubi Kagaku Kogyo Kabushiki Kaisha, Hama Corporation Co., Ltd.Inventor: Masafumi Hamasaki
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Patent number: 4762113Abstract: A self-heating container is capable of generating heat by hydration of an exothermic reaction agent and includes a body, a cover for closing the body, an inner container placed in the body for containing foodstuff to be heated, a primary water bag for supplying water for initial hydration, and an envelope enclosing an exothermic reaction agent and a secondary water bag. The amount of water necessary for hydration of the exothermic reaction agent is divided between the primary and secondary water bags so that water may be supplied in two stages to avoid violent eruption of hot steam due to hydration. In operation, the primary water bag is, after opened, removed from the body to discharge water for the initial hydration of the exothermic reaction agent which generates heat for rupturing the secondary water bag. Then the secondary water bag discharges water for further hydration.Type: GrantFiled: July 28, 1987Date of Patent: August 9, 1988Assignees: Chori Company, Ltd., Fukubi Kagaku Kogyo Kabushiki Kaishi, Hama Corporation Co., Ltd.Inventor: Masafumi Hamasaki
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Patent number: 4640264Abstract: A food and drink warming container comprises an openable container body for receiving a drink or food containing at least a liquid substance, a metallic can housed within the body and filled with quick lime and water which is sealed in a bag, and a cover member attached to the metallic can and having a communication port for communicating the interior of the metallic can to the exterior of the body. The water is brought into contact with the quick lime when the body is broken through the communication port, thereby allowing a hydration reaction of the quick lime to take place for generating heat and thereby warming the drink or food to a predetermined temperature.Type: GrantFiled: October 22, 1984Date of Patent: February 3, 1987Inventors: Tosinobu Yamaguchi, Sigeru Aitoh, Masafumi Hamasaki