Patents by Inventor Masayoshi Usui
Masayoshi Usui 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: 8584742Abstract: A heat exchanger having excellent heat exchanging performance is obtainable by a simple production technique and at a low cost. This is achieved by providing a fin member and by increasing heat conductivity between the fin member and a meandering pipe body. Further, the heat exchanger is made compact for high degrees of layout freedom, enabling the heat exchanger to be installed in a tight space. Engagement grooves (8) are provided in both end surfaces (6, 7), which are opposite to each other, of a fin member (5) in which fins (4) are parallel arranged. Straight pipe sections (2) are parallelly arranged, with gaps (16)in between, in the engagement grooves (8) of the fin member (5). The straight pipe sections (2)a are connected at bent sections (3). A pair of meandering sections (11, 12) is arranged opposite to each other with an insertion gap (17) of the fin member (5) in between.Type: GrantFiled: December 10, 2004Date of Patent: November 19, 2013Assignee: Usui Kokusai Sangyo Kaisha, Ltd.Inventors: Masayoshi Usui, Yasuaki Hashimoto, Koichi Hayashi, Shigeyuki Ishida, Tetsuo Ogata, Nagahisa Amano, Koji Kurita, Shu Yotsumoto
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Patent number: 7721714Abstract: A fuel delivery pipe capable of reducing a pressure pulsation at the time of a fuel injection due to injection nozzles, preventing vibrations and noises at an underfloor pipe arrangement, and turning down a radiate sound from the fuel delivery pipe, wherein a flexible absorbing wall surface 10 formed on a wall surface of a fuel delivery body 1 is loosened due to internal pressure changes to render internal volume of the fuel delivery body 1 increasable, ?L/?{square root over ( )}V determined by sonic speed ?L of fuel flowing through the fuel delivery body 1 and the internal volume V of the fuel delivery body 1 is set as 20×103(m?0.5·sec?1)??L/?{square root over ( )}V?85×103(m?0.5·sec?1) while a ratio ?L/?H of equivalent sonic speed ?H in a high frequency area to the sonic speed ?L of the fuel is set as ?L/?H?0.Type: GrantFiled: February 8, 2007Date of Patent: May 25, 2010Assignee: Usui Kokusai Sangyo Kaisha, Ltd.Inventors: Masayoshi Usui, Eiji Watanabe, Hikari Tsuchiya, Yoshiyuki Serizawa, Kazuteru Mizuno, Koichi Hayashi, Tetsuo Ogata
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Patent number: 7431781Abstract: A common-rail injection system is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can be made thin and light in weight. A main pipe rail is manufactured by transformation induced plastic type strength steel. After the main pipe rail is processed, residual austenite is generated by heat treatment, and the reduction processing of stress concentration of a branch hole and a main pipe rail side flow passage crossing portion is performed. Further, it is preferable that an induced plastic transformation is generated on the inner surface of the main pipe rail by autofrettage processing, and compression residual stress is left.Type: GrantFiled: September 15, 2005Date of Patent: October 7, 2008Assignee: USUI Kokusai Sangyo Kaisha LimitedInventors: Masayoshi Usui, Kikuo Asada, Teruhisa Takahashi
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Patent number: 7318418Abstract: A common rail a diesel engine includes a branching connection body firmly fixed on common rail body by friction welding. A fronting face of the branching connection body to be fixed on the common rail body by friction welding is in the shape of a cone whose center part is slightly projected and whose peripheral part is a gentle cone face.Type: GrantFiled: January 27, 2006Date of Patent: January 15, 2008Assignee: Usui Kokusai Sangyo Kaisha LimitedInventors: Shoichiro Usui, Masayoshi Usui, Yasuji Sakamoto, Eiji Watanabe, Yasuaki Hashimoto
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Patent number: 7281530Abstract: A supercharging system for an internal combustion engine includes an exhaust introduction passage for introducing exhaust gas from an internal combustion engine; an exhaust discharge passage for introducing the exhaust gas from the exhaust introduction passage and exhausting the exhaust gas to an exterior; a mixture part arranged between the exhaust introduction passage and the exhaust discharge passage, for changing internal pressure into negative pressure upon accelerating flowing velocity of the exhaust gas with a narrowed flowing passage set to have a smaller diameter than the exhaust introduction pipe; an absorption passage for mixing outside air and the exhaust gas inside the mixture part upon introducing the outside air with use of negative pressure into an inside of the mixture part; and an intake passage for taking out and returning a part of mixed gas mixed inside the mixture part to a side of the internal combustion engine.Type: GrantFiled: February 25, 2005Date of Patent: October 16, 2007Assignee: Usui Kokusai Sangyo Kabushiki KaishaInventor: Masayoshi Usui
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Patent number: 7278661Abstract: A branch connector in a fuel pressure accumulating container is joined with a through hole formed on a peripheral wall of the pressure accumulating container. The branch connector is inserted deeply into the through hole until the distal end of the branch connector is projected from the inner peripheral wall surface of the pressure accumulating container. Thus, the internal pressure fatigue strength is improved by lowering the maximum stress value generated at the internal peripheral edge at the lower end of the branch connector.Type: GrantFiled: December 23, 2004Date of Patent: October 9, 2007Assignee: Usui Kokusai Sangyo Kaisha LimitedInventor: Masayoshi Usui
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Patent number: 7275521Abstract: A joint structure connects a diverging branch pipe to a fuel rail for an internal combustion engine. The fuel rail is stainless steel or steel with rust prevention processing on at least the inner face. The diverging branch pipe is a double pipe with inner and outer pipes. The inner pipe has excellent rust preventing ability with respect to fuel on its inner face in comparison with the outer face of the outer pipe. The inner and outer pipes are connected by a nut for fastening through a joint fitting. A connecting seal portion of the diverging branch pipe and the joint fitting has rust preventing ability equal to that of the inner circumferential face of the diverging branch pipe. An entire liquid contact portion, including a seal face of the diverging branch pipe with respect to the fuel is covered with the inner pipe.Type: GrantFiled: June 15, 2005Date of Patent: October 2, 2007Assignee: Usui Kokusai Sangyo Kaisha LimitedInventors: Masayoshi Usui, Kikuo Asada, Yasuaki Hashimoto, Hiroyuki Nishizawa, Iichiro Seino
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Publication number: 20070169754Abstract: A fuel delivery pipe capable of reducing a pressure pulsation at the time of a fuel injection due to injection nozzles, preventing vibrations and noises at an underfloor pipe arrangement, and turning down a radiate sound from the fuel delivery pipe, wherein a flexible absorbing wall surface 10 formed on a wall surface of a fuel delivery body 1 is loosened due to internal pressure changes to render internal volume of the fuel delivery body 1 increasable, ?L/?{square root over ( )} V determined by sonic speed ?L of fuel flowing through the fuel delivery body 1 and the internal volume V of the fuel delivery body 1 is set as 20×103 (m?0.5·sec?1)??L/?{square root over ( )} V?85×103(m?0.5·sec?1) while a ratio ?L/?H of equivalent sonic speed ?H in a high frequency area to the sonic speed ?L of the fuel is set as ?L/?H?0.Type: ApplicationFiled: February 8, 2007Publication date: July 26, 2007Applicant: Usui Kokusai Sangyo Kaisha, Ltd.Inventors: Masayoshi Usui, Eiji Watanabe, Hikari Tsuchiya, Yoshiyuki Serizawa, Kazuteru Mizuno, Koichi Hayashi, Tetsuo Ogata
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Publication number: 20070062677Abstract: A heat exchanger having excellent heat exchanging performance is obtainable by a simple production technique and at a low cost. This is achieved by providing a fin member and by increasing heat conductivity between the fin member and a meandering pipe body. Further, the heat exchanger is made compact for high degrees of layout freedom, enabling the heat exchanger to be installed in a tight space. Engagement grooves are provided in both end surfaces, which are opposite to each other, of a fin member in which fins are parallel arranged. Straight pipe sections are parallelly arranged, with gaps in between, in the engagement grooves of the fin member. The straight pipe sections a are connected at bent sections. A pair of meandering sections is arranged opposite to each other with an insertion gap of the fin member in between. On of the meandering sections and the other meandering section are connected by a connection pipe to form a meandering pipe main body.Type: ApplicationFiled: December 10, 2004Publication date: March 22, 2007Inventors: Masayoshi Usui, Yasuaki Hashimoto, Koichi Hayashi, Shigeyuki Ishida, Tetsuo Ogata, Nagahisa Amano, Koji Kurita, Shu Yotsumoto
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Patent number: 7185636Abstract: A fuel delivery pipe capable of reducing a pressure pulsation at the time of a fuel injection due to injection nozzles, preventing vibrations and noises at an underfloor pipe arrangement, and turning down a radiate sound from the fuel delivery pipe, wherein a flexible absorbing wall surface 10 formed on a wall surface of a fuel delivery body 1 is loosened due to internal pressure changes to render internal volume of the fuel delivery body 1 increasable, ?L/?{square root over ( )}V determined by sonic speed ?L of fuel flowing through the fuel delivery body 1 and the internal volume V of the fuel delivery body 1 is set as 20×103(m?0.5·sec?1)??L/?{square root over ( )}V?85×103(m?0.5·sec?) while a ratio ?L/?H of equivalent sonic speed ?H in a high frequency area to the sonic speed ?L of the fuel is set as ?L/?H?0.Type: GrantFiled: October 8, 2003Date of Patent: March 6, 2007Assignee: USUI Kokusai Sangyo Kaisha, Ltd.Inventors: Masayoshi Usui, Eiji Watanabe, Hikari Tsuchiya, Yoshiyuki Serizawa, Kazuteru Mizuno, Koichi Hayashi, Tetsuo Ogata
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Publication number: 20060260124Abstract: A common rail for a diesel engine has a main pipe rail with an axial flow passage. Branch holes are made in the main pipe rail and communicate with the axial flow passage. The main pipe rail is worked to decrease stress concentration near the branch holes. The whole inner peripheral surface of the main pipe rail and the branch holes then is subjected to autofrettage processing to generate a compressive residual stress on the entire inner peripheral surface of the main pipe rail and the branch holes for increasing fatigue strength.Type: ApplicationFiled: July 18, 2006Publication date: November 23, 2006Applicant: Usui Kokusai Sangyo Kaisha LimitedInventor: Masayoshi Usui
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Patent number: 7125051Abstract: A common-rail injection system is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can be made thin and light in weight. A main pipe rail is manufactured by transformation induced plastic type strength steel. After the main pipe rail is processed, residual austenite is generated by heat treatment, and the reduction processing of stress concentration of a branch hole and a main pipe rail side flow passage crossing portion is performed. Further, it is preferable that an induced plastic transformation is generated on the inner surface of the main pipe rail by autofrettage processing, and compression residual stress is left.Type: GrantFiled: July 10, 2003Date of Patent: October 24, 2006Assignee: Usui Kokusai Sangyo Kaisha LimitedInventors: Masayoshi Usui, Kikuo Asada, Teruhisa Takahashi
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Publication number: 20060169253Abstract: A common rail a diesel engine includes a branching connection body firmly fixed on common rail body by friction welding. A fronting face of the branching connection body to be fixed on the common rail body by friction welding is in the shape of a cone whose center part is slightly projected and whose peripheral part is a gentle cone face.Type: ApplicationFiled: January 27, 2006Publication date: August 3, 2006Applicant: Usui Kokusai Sangyo Kaisha LimitedInventors: Shoichiro Usui, Masayoshi Usui, Yasuji Sakamoto, Eiji Watanabe, Yasuaki Hashimoto
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Publication number: 20060005599Abstract: A common-rail injection system is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can be made thin and light in weight. A main pipe rail is manufactured by transformation induced plastic type strength steel. After the main pipe rail is processed, residual austenite is generated by heat treatment, and the reduction processing of stress concentration of a branch hole and a main pipe rail side flow passage crossing portion is performed. Further, it is preferable that an induced plastic transformation is generated on the inner surface of the main pipe rail by autofrettage processing, and compression residual stress is left.Type: ApplicationFiled: September 15, 2005Publication date: January 12, 2006Applicant: Usui Kokusai Sangyo Kaisha LimitedInventors: Masayoshi Usui, Kikuo Asada, Teruhisa Takahashi
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Publication number: 20050284447Abstract: A joint structure connects a diverging branch pipe to a fuel rail for an internal combustion engine. The fuel rail is stainless steel or steel with rust prevention processing on at least the inner face. The diverging branch pipe is a double pipe with inner and outer pipes. The inner pipe has excellent rust preventing ability with respect to fuel on its inner face in comparison with the outer face of the outer pipe. The inner and outer pipes are connected by a nut for fastening through a joint fitting. A connecting seal portion of the diverging branch pipe and the joint fitting has rust preventing ability equal to that of the inner circumferential face of the diverging branch pipe. An entire liquid contact portion, including a seal face of the diverging branch pipe with respect to the fuel is covered with the inner pipe.Type: ApplicationFiled: June 15, 2005Publication date: December 29, 2005Applicant: Usui Kokusai Sangyo Kaisha LimitedInventors: Masayoshi Usui, Kikuo Asada, Yasuaki Hashimoto, Hiroyuki Nishizawa, Iichiro Seino
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Publication number: 20050257774Abstract: A fuel delivery pipe capable of reducing a pressure pulsation at the time of a fuel injection due to injection nozzles, preventing vibrations and noises at an underfloor pipe arrangement, and turning down a radiate sound from the fuel delivery pipe, wherein a flexible absorbing wall surface 10 formed on a wall surface of a fuel delivery body 1 is loosened due to internal pressure changes to render internal volume of the fuel delivery body 1 increasable, ?L/{square root}{square root over ( )}V determined by sonic speed ?L of fuel flowing through the fuel delivery body 1 and the internal volume V of the fuel delivery body 1 is set as 20×103(m?0.5·sec?1)??L/{square root}{square root over ( )}V?85×103(m?0.5·sec?1) while a ratio ?L/?H of equivalent sonic speed ?H in a high frequency area to the sonic speed ?L of the fuel is set as ?L/?H?0.Type: ApplicationFiled: October 8, 2003Publication date: November 24, 2005Inventors: Masayoshi Usui, Eiji Watanabe, Hikari Tsuchiya, Yoshiyuki Serizawa, Kazuteru Mizuno, Koichi Hayashi, Tetsuo Ogata
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Publication number: 20050200120Abstract: A branch connector in a fuel pressure accumulating container is joined with a through hole formed on a peripheral wall of the pressure accumulating container. The branch connector is inserted deeply into the through hole until the distal end of the branch connector is projected from the inner peripheral wall surface of the pressure accumulating container. Thus, the internal pressure fatigue strength is improved by lowering the maximum stress value generated at the internal peripheral edge at the lower end of the branch connector.Type: ApplicationFiled: December 23, 2004Publication date: September 15, 2005Applicant: Usui Kokusai Sangyo Kaisha LimitedInventor: Masayoshi Usui
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Publication number: 20050183704Abstract: A supercharging system for an internal combustion engine includes an exhaust introduction passage for introducing exhaust gas from an internal combustion engine; an exhaust discharge passage for introducing the exhaust gas from the exhaust introduction passage and exhausting the exhaust gas to an exterior; a mixture part arranged between the exhaust introduction passage and the exhaust discharge passage, for changing internal pressure into negative pressure upon accelerating flowing velocity of the exhaust gas with a narrowed flowing passage set to have a smaller diameter than the exhaust introduction pipe; an absorption passage for mixing outside air and the exhaust gas inside the mixture part upon introducing the outside air with use of negative pressure into an inside of the mixture part; and an intake passage for taking out and returning a part of mixed gas mixed inside the mixture part to a side of the internal combustion engine.Type: ApplicationFiled: February 25, 2005Publication date: August 25, 2005Inventor: Masayoshi Usui
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Patent number: 6929288Abstract: A branch connector in a fuel pressure accumulating container is joined with a through hole formed on a peripheral wall of the pressure accumulating container. The branch connector is inserted deeply into the through hole until the distal end of the branch connector is projected from the inner peripheral wall surface of the pressure accumulating container. Thus, the internal pressure fatigue strength is improved by lowering the maximum stress value generated at the internal peripheral edge at the lower end of the branch connector.Type: GrantFiled: December 16, 2002Date of Patent: August 16, 2005Assignee: Usui Kokusai Sangyo Kaisha LimitedInventor: Masayoshi Usui
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Patent number: D512451Type: GrantFiled: December 10, 2003Date of Patent: December 6, 2005Assignee: Usui Kokusai Sangyo Kaisha, Ltd.Inventor: Masayoshi Usui