Patents by Inventor Yasunori Aihara
Yasunori Aihara 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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Publication number: 20240096573Abstract: A vacuum circuit breaker comprises: a grounded tank; a vacuum chamber disposed in the grounded tank; an insulating tube disposed between one side end surface inside the grounded tank and one side end surface outside the vacuum chamber; a fixed rod inserted in the vacuum chamber; a fixed-side electrode disposed in the vacuum chamber at one end of the fixed rod; a movable-side electrode disposed in the vacuum chamber so as to face the fixed-side electrode; a movable rod partially disposed in the insulating tube and having one end with the movable-side electrode disposed thereon; a sliding member disposed on the movable rod so as to slide in the insulating tube; and a contact pressure spring disposed at the movable rod between one side end surface inside the grounded tank and the sliding member.Type: ApplicationFiled: December 21, 2021Publication date: March 21, 2024Applicant: Mitsubishi Electric CorporationInventors: Naoya AIHARA, Yasunori NAKAMURA, Taiki DONEN
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Patent number: 10449661Abstract: A driving tool includes a driver configured to drive out a fastener, a piston to which the driver is connected, a cylinder in which the piston is disposed so as to be reciprocated, a head valve which is slidably mounted and controls flow of compressed air into the cylinder, and a foreign matter removing member provided with a protruding portion facing a circumferential surface of the head valve. When the head valve slides to move relatively with respect to the foreign matter removing member, a matter attached on the circumferential surface of the head valve can be removed by the protruding portion.Type: GrantFiled: August 23, 2016Date of Patent: October 22, 2019Assignee: MAX CO., LTD.Inventors: Norimichi Sekiguchi, Hiroshi Tanaka, Yasunori Aihara, Michiaki Adachi
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Publication number: 20170057068Abstract: A driving tool includes a driver configured to drive out a fastener, a piston to which the driver is connected, a cylinder in which the piston is disposed so as to be reciprocated, a head valve which is slidably mounted and controls flow of compressed air into the cylinder, and a foreign matter removing member provided with a protruding portion facing a circumferential surface of the head valve. When the head valve slides to move relatively with respect to the foreign matter removing member, a matter attached on the circumferential surface of the head valve can be removed by the protruding portion.Type: ApplicationFiled: August 23, 2016Publication date: March 2, 2017Inventors: Norimichi SEKIGUCHI, Hiroshi TANAKA, Yasunori AIHARA, Michiaki ADACHI
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Patent number: 9381636Abstract: A fuel cartridge, which is capable of being mounted on a tool main body of a gas-combustion type driving tool so as to supply fuel gas to a striking mechanism of the tool main body, is provided with an ejection nozzle provided at a port portion formed at an end portion of a cartridge main body and slidable with respect to the cartridge main body; a compression spring for biasing the ejection nozzle so that a tip end of the ejection nozzle protrudes from the cartridge main body; and an ejection hole formed at a side wall of a tip end portion of the ejection nozzle.Type: GrantFiled: August 7, 2013Date of Patent: July 5, 2016Assignee: MAX CO., LTD.Inventors: Yasunori Aihara, Tatsushi Ogawa, Satoshi Osuga
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Patent number: 8794893Abstract: A fastening pin has an enlarged head part, and a shaft part. The shaft part includes a large diameter section formed below the enlarged head part, a middle shaft section formed below the large diameter section, and a small diameter section extending from the middle shaft section to a leading end of the fastening pin. The large diameter section includes a round portion formed below the enlarged head part and a taper portion formed between the round portion and the middle shaft section. A diameter of the large diameter section at a side of the enlarged head part is larger than a diameter of the large diameter section at a side of the middle shaft section. The middle shaft section has a uniform diameter from a side of the large diameter section to a side of the small diameter section.Type: GrantFiled: February 1, 2012Date of Patent: August 5, 2014Assignee: Max Co., Ltd.Inventors: Yasunori Aihara, Toshimichi Arai
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Publication number: 20130320061Abstract: A fuel cartridge, which is capable of being mounted on a tool main body of a gas-combustion type driving tool so as to supply fuel gas to a striking mechanism of the tool main body, is provided with an ejection nozzle provided at a port portion formed at an end portion of a cartridge main body and slidable with respect to the cartridge main body; a compression spring for biasing the ejection nozzle so that a tip end of the ejection nozzle protrudes from the cartridge main body; and an ejection hole formed at a side wall of a tip end portion of the ejection nozzle.Type: ApplicationFiled: August 7, 2013Publication date: December 5, 2013Applicant: Max Co., Ltd.Inventors: Yasunori AIHARA, Tatsushi Ogawa, Satoshi Osuga
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Patent number: 8544561Abstract: A bumper of a driving tool has a cylindrical overall shape and also has a space portion expanding downward therein. The bumper is provided with an upper portion, an intermediate portion, and a lower portion. A normal inclined-surface, in which an outer diameter becomes larger from an upper end of a full height of the bumper toward a slightly upper position of the intermediate portion, is formed at a periphery of the upper portion. A bulging-out portion haying the largest outer diameter in the bumper is bulged out, at a periphery of the intermediate portion. A reverse inclined-surface, in which the outer diameter becomes smaller toward downward, is formed at the periphery of the lower portion.Type: GrantFiled: June 25, 2010Date of Patent: October 1, 2013Assignee: Max Co., Ltd.Inventor: Yasunori Aihara
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Patent number: 8505796Abstract: A fuel cartridge, which is capable of being mounted on a tool main body of a gas-combustion type driving tool so as to supply fuel gas to a striking mechanism of the tool main body, is provided with an ejection nozzle provided at a port portion formed at an end portion of a cartridge main body and slidable with respect to the cartridge main body; a compression spring for biasing the ejection nozzle so that a tip end of the ejection nozzle protrudes from the cartridge main body; and an ejection hole formed at a side wall of a tip end portion of the ejection nozzle.Type: GrantFiled: May 12, 2009Date of Patent: August 13, 2013Assignee: Max Co., Ltd.Inventors: Yasunori Aihara, Tatsushi Ogawa, Satoshi Osuga
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Publication number: 20120219382Abstract: A fastening pin has an enlarged head part, and a shaft part. The shaft part includes a large diameter section formed below the enlarged head part, a middle shaft section formed below the large diameter section, and a small diameter section extending from the middle shaft section to a leading end of the fastening pin. The large diameter section includes a round portion formed below the enlarged head part and a taper portion formed between the round portion and the middle shaft section. A diameter of the large diameter section at a side of the enlarged head part is larger than a diameter of the large diameter section at a side of the middle shaft section. The middle shaft section has a uniform diameter from a side of the large diameter section to a side of the small diameter section.Type: ApplicationFiled: February 1, 2012Publication date: August 30, 2012Applicant: MAX CO., LTD.Inventors: Yasunori Aihara, Toshimichi Arai
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Patent number: 8220687Abstract: A ratchet member 23, which is provide with a slope 24 for guiding a tip end of a nail inclined to a rear side of an ejection opening 7 into the ejection openings 7 and 16, and a guide surface 25 for guiding the tip end of a nail to the center of each of the ejection openings 7 and 16, is provided on a rear side of ejection openings 7 and 16 and urged so that a guide surface 25 of the ratchet member 23 enters the ejection openings 7 and 16.Type: GrantFiled: April 21, 2004Date of Patent: July 17, 2012Assignee: Max Co., Ltd.Inventors: Hiroki Yamamoto, Michiaki Adachi, Terufumi Hamano, Tatsushi Ogawa, Kouji Kubo, Yasunori Aihara
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Publication number: 20100327040Abstract: A bumper of a driving tool has a cylindrical overall shape and also has a space portion expanding downward therein. The bumper is provided with an upper portion, an intermediate portion, and a lower portion. A normal inclined-surface, in which an outer diameter becomes larger from an upper end of a full height of the bumper toward a slightly upper position of the intermediate portion, is formed at a periphery of the upper portion. A bulging-out portion haying the largest outer diameter in the bumper is bulged out, at a periphery of the intermediate portion. A reverse inclined-surface, in which the outer diameter becomes smaller toward downward, is formed at the periphery of the lower portion.Type: ApplicationFiled: June 25, 2010Publication date: December 30, 2010Applicant: MAX CO., LTD.Inventor: Yasunori AIHARA
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Publication number: 20100243286Abstract: A power tool includes a striking cylinder, a striking piston slidably housed in the striking cylinder, a driver coupled to a bottom surface of the striking piston, and a cushioning mechanism configured to absorb an impact of striking a fastener with the driver when the striking piston is driven. The cushioning mechanism includes a housing formed below the striking cylinder, and a bumper housed in the housing to receive the bottom surface of the striking piston. The bumper is formed in a tubular shape, a wall thickness of a central section of the bumper is greater than wall thicknesses of an upper section and a lower section of the bumper, and the wall thicknesses of the upper section and the lower section are substantially the same.Type: ApplicationFiled: August 22, 2007Publication date: September 30, 2010Applicant: Max Co., Ltd.Inventors: Takamichi Hoshino, Toshimichi Arai, Yasunori Aihara
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Patent number: 7703651Abstract: A striking cylinder 6 is disposed within a body 1. A main air chamber 7 for reserving compressed air therein is disposed at an outside of the striking cylinder 6. A cylinder cap 8 for covering the striking cylinder 6 and the main air chamber 7 is fixed at an upper portion of the body 1. A lower portion of a cylindrical head valve 13, which opens and closes the main air chamber 7 and the striking cylinder 6 and is configured in a manner that upper and lower external diameters thereof are the same, is disposed at an outside of the striking cylinder 6. A cylindrical inner wall 10 and a cylindrical outer wall 11 are integrally formed at a lower surface of the cylinder cap 8. A piston stop 12 for defining a top dead center of a striking piston 5 is provided at an inside of the cylindrical inner wall 10. The head valve 13 is slidably provided between the cylindrical inner wall 10 and the cylindrical outer wall 11.Type: GrantFiled: July 20, 2006Date of Patent: April 27, 2010Assignee: Max Co., Ltd.Inventors: Hiroki Yamamoto, Tatsushi Ogawa, Yasunori Aihara
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Publication number: 20090283567Abstract: A fuel cartridge, which is capable of being mounted on a tool main body of a gas-combustion type driving tool so as to supply fuel gas to a striking mechanism of the tool main body, is provided with an ejection nozzle provided at a port portion formed at an end portion of a cartridge main body and slidable with respect to the cartridge main body; a compression spring for biasing the ejection nozzle so that a tip end of the ejection nozzle protrudes from the cartridge main body; and an ejection hole formed at a side wall of a tip end portion of the ejection nozzle.Type: ApplicationFiled: May 12, 2009Publication date: November 19, 2009Applicant: MAX CO., LTD.Inventors: Yasunori AIHARA, Tatsushi Ogawa, Satoshi Osuga
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Publication number: 20090230166Abstract: A striking cylinder 6 is disposed within a body 1. A main air chamber 7 for reserving compressed air therein is disposed at an outside of the striking cylinder 6. A cylinder cap 8 for covering the striking cylinder 6 and the main air chamber 7 is fixed at an upper portion of the body 1. A lower portion of a cylindrical head valve 13, which opens and closes the main air chamber 7 and the striking cylinder 6 and is configured in a manner that upper and lower external diameters thereof are the same, is disposed at an outside of the striking cylinder 6. A cylindrical inner wall 10 and a cylindrical outer wall 11 are integrally formed at a lower surface of the cylinder cap 8. A piston stop 12 for defining a top dead center of a striking piston 5 is provided at an inside of the cylindrical inner wall 10. The head valve 13 is slidably provided between the cylindrical inner wall 10 and the cylindrical outer wall 11.Type: ApplicationFiled: July 20, 2006Publication date: September 17, 2009Applicant: Max Co., LtdInventors: Hiroki Yamamoto, Tatsushi Ogawa, Yasunori Aihara
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Patent number: 7451903Abstract: An air intake valve seat 24 is formed by mounting a cylinder seal 29 of rubber or the like from an upper face of a ring-shaped flange portion 28 formed to project from an outer peripheral face of a strike cylinder 15 over to an upper end portion of the strike cylinder 15 to cover surfaces thereof. A main valve 21 in a ring shape is arranged along an outer periphery of the strike cylinder 15 on an upper side of a ring-shaped flange portion 28. An outer peripheral edge portion 30 of a piston stop 18 of rubber or the like arranged on an upper side of the strike cylinder 15 is arranged to extend in a lower direction from an upper end portion along an outer peripheral face of the strike cylinder 15 to thereby form an air exhaust valve seat 25 at a lower end of the outer peripheral edge portion 30.Type: GrantFiled: August 15, 2005Date of Patent: November 18, 2008Assignee: Max Co., Ltd.Inventor: Yasunori Aihara
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Patent number: 7357286Abstract: A contact nose 15, in which an ejection opening 24 is formed coaxially with an ejection opening 18 of a nose portion 13 that guides a driver slidably, is slidably provided at an end part of the nose portion 13 to be urged in a direction of an end portion of the ejection opening 18. A guide slope 28 adapted to guide a tip end of a nail, which is hammered out tiltingly from the ejection opening 18 of the nose portion 13, into the ejection opening 24 is formed on an upper rear side of the ejection opening 24 of the contact nose 15.Type: GrantFiled: April 21, 2004Date of Patent: April 15, 2008Assignee: Max Co., Ltd.Inventors: Kouji Kubo, Yasunori Aihara
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Publication number: 20080023519Abstract: An air intake valve seat 24 is formed by mounting a cylinder seal 29 of rubber or the like from an upper face of a ring-shaped flange portion 28 formed to project from an outer peripheral face of a strike cylinder 15 over to an upper end portion of the strike cylinder 15 to cover surfaces thereof. A main valve 21 in a ring shape is arranged along an outer periphery of the strike cylinder 15 on an upper side of a ring-shaped flange portion 28. An outer peripheral edge portion 30 of a piston stop 18 of rubber or the like arranged on an upper side of the strike cylinder 15 is arranged to extend in a lower direction from an upper end portion along an outer peripheral face of the strike cylinder 15 to thereby form an air exhaust valve seat 25 at a lower end of the outer peripheral edge portion 30.Type: ApplicationFiled: August 15, 2005Publication date: January 31, 2008Inventor: Yasunori Aihara
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Publication number: 20060255088Abstract: A contact nose 15, in which an ejection opening 24 is formed coaxially with an ejection opening 18 of a nose portion 13 that guides a driver slidably, is slidably provided at an end part of the nose portion 13 to be urged in a direction of an end portion of the ejection opening 18. A guide slope 28 adapted to guide a tip end of a nail, which is hammered out tiltingly from the ejection opening 18 of the nose portion 13, into the ejection opening 24 is formed on an upper rear side of the ejection opening 24 of the contact nose 15.Type: ApplicationFiled: April 21, 2004Publication date: November 16, 2006Inventors: Kouji Kubo, Yasunori Aihara
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Publication number: 20060157527Abstract: A ratchet member 23, which is provide with a slope 24 for guiding a tip end of a nail inclined to a rear side of an ejection opening 7 into the ejection openings 7 and 16, and a guide surface 25 for guiding the tip end of a nail to the center of each of the ejection openings 7 and 16, is provided on a rear side of ejection openings 7 and 16 and urged so that a guide surface 25 of the ratchet member 23 enters the ejection openings 7 and 16.Type: ApplicationFiled: April 21, 2004Publication date: July 20, 2006Inventors: Hiroki Yamamoto, Michiaki Adachi, Terufumi Hamano, Tatsushi Ogawa, Kouji Kubo, Yasunori Aihara