Patents by Inventor Mikitoshi Hiraga
Mikitoshi Hiraga 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: 9114503Abstract: A nozzle, a nozzle unit having a plurality of nozzles, and a blasting machine equipped with the nozzle unit, which can achieve a micro-machining with a high precision and a high productivity for the blasting process. A portion for escape 13c is formed at the distal end of the ejecting portion 13 of the nozzle 11, so if the distance between the surface of the work and the nozzle 11 is shortened to suppress the broadening of the flow of the abrasives, the reflected abrasives do not remain within the space between the surface of the work and the distal end of the ejecting portion 13. Thus, a blasting process with a high precision can be achieved. Further, since two nozzles 11m and 11n can be arranged so as to correspond to the width of the surface of the work to be processed by a rotational device 16, it is possible to blast a wider area of the surface of the work while the nozzle unit 10 or the blasting machine 20 sweep one time. Thus, the high productivity of the blasting process can be achieved.Type: GrantFiled: April 10, 2009Date of Patent: August 25, 2015Assignee: 1. SINTOKOGIO, LTD.Inventors: Mikitoshi Hiraga, Ryoichi Tsunoda, Kenichiro Inagaki, Kazuyoshi Maeda, Yukinori Suzuki, Norihito Shibuya
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Patent number: 8814634Abstract: This invention provides a conveying apparatus and a blasting machine equipped with the conveying apparatus that can prevent workpieces from being damaged by the used abrasives attached to the conveying rollers. For the conveying apparatus, a peripheral part 33a disposed at the peripheral surface of a rolling member 33 of a rolling roller 31 is made of a softer elastic material than the material of the panel P, wherein when used abrasives get stuck between the peripheral part 33a of the rolling member 33 and the panel P, since the peripheral part 33a acts as a cushioning material that can reduce the force caused by the used abrasives and loaded on the panel P, even if the panel P is made of a fragile material, such as glass, the panel P can be conveyed without flaws being caused by the used abrasives.Type: GrantFiled: April 10, 2009Date of Patent: August 26, 2014Assignee: Sintokogio, Ltd.Inventors: Mikitoshi Hiraga, Ryoichi Tsunoda, Kenichiro Inagaki, Kazuyoshi Maeda
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Publication number: 20110039481Abstract: This invention provides a conveying apparatus and a blasting machine equipped with the conveying apparatus that can prevent workpieces from being damaged by the used abrasives attached to the conveying rollers. For the conveying apparatus, a peripheral part 33a disposed at the peripheral surface of a rolling member 33 of a rolling roller 31 is made of a softer elastic material than the material of the panel P, wherein when used abrasives get stuck between the peripheral part 33a of the rolling member 33 and the panel P, since the peripheral part 33a acts as a cushioning material that can reduce the force caused by the used abrasives and loaded on the panel P, even if the panel P is made of a fragile material, such as glass, the panel P can be conveyed without flaws being caused by the used abrasives.Type: ApplicationFiled: April 10, 2009Publication date: February 17, 2011Inventors: Mikitoshi Hiraga, Ryoichi Tsunoda, Kenichiro Inagaki, Kazuyoshi Maeda
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Publication number: 20110028075Abstract: A nozzle, a nozzle unit having a plurality of nozzles, and a blasting machine equipped with the nozzle unit, which can achieve a micro-machining with a high precision and a high productivity for the blasting process, are provided. Since the portion for escape 13c is formed at the distal end of the ejecting portion 13, if the distance between the surface of the work and the nozzle 11 is shortened to suppress the broadening of the flow of the abrasives, the reflected abrasives do not remain within the space between the surface of the work and the distal end of the ejecting portion 13. Thus, the blasting process with a high precision can be achieved. Further, since the nozzle 11m and the nozzle 11n can be arranged so as to correspond to the width of the surface of the work to be processed by the rotational device 16, it is possible to blast a wider area of the surface of the work while the nozzle unit 10 or the blasting machine 20 sweep one time.Type: ApplicationFiled: April 10, 2009Publication date: February 3, 2011Inventors: Mikitoshi Hiraga, Ryoichi Tsunoda, Kenichiro Inagaki, Kazuyoshi Maeda, Yukinori Suzuki, Norihito Shibuya
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Patent number: 6371839Abstract: An constant abrasive feeder of abrasive grains M is formed of a reservoir supply section 20 having a reservoir tank 21 and a buffer tank 31, a stirring hopper 40 for stirring abrasive grains S, and a vibration feeder 60 for supplying the abrasive grains S to an abrasive jet nozzle 5. The abrasive grains S recovered in a cyclone 1 is reserved in the reservoir tank 21 and the buffer tank 31 by a constant quantity, the abrasive grains S is sent from the buffer tank 31 and reserved in a reservoir 43, which is stirred by stirring bars 50, 51 and sent to a supply guide 45. Then, the abrasive grains S is sequentially supplied to a feeder body 61 of the vibration feeder 60 from an opening formed in the supply guide 45.Type: GrantFiled: February 15, 2001Date of Patent: April 16, 2002Assignee: Sintobrator, LTDInventors: Moriyasu Izawa, Hiromichi Horikawa, Hiroyasu Yashiro, Mikitoshi Hiraga, Yasuhiro Nagae
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Publication number: 20010021630Abstract: An constant abrasive feeder of abrasive grains M is formed of a reservoir supply section 20 having a reservoir tank 21 and a buffer tank 31, a stirring hopper 40 for stirring abrasive grains S, and a vibration feeder 60 for supplying the abrasive grains S to an abrasive jet nozzle 5. The abrasive grains S recovered in a cyclone 1 is reserved in the reservoir tank 21 and the buffer tank 31 by a constant quantity, the abrasive grains S is sent from the buffer tank 31 and reserved in a reservoir 43, which is stirred by stirring bars 50, 51 and sent to a supply guide 45. Then, the abrasive grains S is sequentially supplied to a feeder body 61 of the vibration feeder 60 from an opening formed in the supply guide 45.Type: ApplicationFiled: February 15, 2001Publication date: September 13, 2001Applicant: SINTOBRATOR, LTD.Inventors: Moriyasu Izawa, Hiromichi Horikawa, Hiroyasu Yashiro, Mikitoshi Hiraga, Yasuhiro Nagae
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Patent number: 5733172Abstract: A dry barrel finishing machine is disclosed. The machine includes a device to drip or spray water to wet the surface of media. The faucet of the device is located adjacent or in the barrel or barrels of the finishing machine so that it can spray water on media in the barrel or barrels. The media is cooled by the sprayed water. Since the sprayed water wets and softens the surface of the media, attrition dust on the surface of the media is easily removed during attrition. Also, since the wetted surface of the media tends to peel, it is self-sharpened. Thus the media always keeps its abrasive ability.Type: GrantFiled: May 22, 1996Date of Patent: March 31, 1998Assignee: Sintobrator, Ltd.Inventors: Kazutoshi Nishimura, Masatomo Watanabe, Takao Ishida, Satoshi Niwa, Mikitoshi Hiraga
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Patent number: 5672094Abstract: A centrifugal dry barrel finishing machine is disclosed. The machine include a plurality of barrel pots which are rotated about their axes of rotation and revolved about an axis of revolution. A mass is put in the barrel pots to finish workpieces by dry media that flows in the barrel pots. Each barrel pot has an air-intake part and an air and dust exhaust part that prevent the workpieces and dry media of the mass from passing through the parts, and the air and dust exhaust part is connected to and in communication with a dust collector through a connector device such that each barrel pot is rotatable and revolvable relative to said dust collector.Type: GrantFiled: May 22, 1996Date of Patent: September 30, 1997Assignee: Sintobrator, Ltd.Inventors: Kazutoshi Nishimura, Masatomo Watanabe, Mikitoshi Hiraga