Patents by Inventor Yoshiyuki Sawada
Yoshiyuki Sawada 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: 7201038Abstract: A knock sensor is constructed by putting and fitting components including an annular piezoelectric element, terminal plate, insulating sheet and weight onto a base consisting of a flange portion and a tubular portion, forming a groove part on a tip outer circumferential surface of the tubular portion, fitting a stopper ring functioning to apply an axial preload to the components onto the tubular portion, and caulking fixedly the stopper ring and the tubular portion into the groove part.Type: GrantFiled: April 5, 2005Date of Patent: April 10, 2007Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masao Kohashi, Akito Yokoi, Yoichiro Takahashi, Yoshiyuki Sawada
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Patent number: 7128830Abstract: A purifying device comprising a purifying tank (1) having an ultraviolet radiating tube (2) installed within the middle thereof and a submersible pump (3) mounted in the upper region thereof. The purifying tank is held 5 to 100 cm below the water level by floats (7a). A partition (6) divides the region adjacent to the water level into upper and lower levels, wherein only the water on the upper side of the partition (6) is sucked in by the submersible pump (3) for purification in the purifying tank (1), whereby water-bloom, algae or the like floating on water is rapidly collected and decomposed for removal.Type: GrantFiled: March 21, 2001Date of Patent: October 31, 2006Inventor: Yoshiyuki Sawada
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Publication number: 20060081034Abstract: A knock sensor is constructed by putting and fitting components including an annular piezoelectric element, terminal plate, insulating sheet and weight onto a base consisting of a flange portion and a tubular portion, forming a groove part on a tip outer circumferential surface of the tubular portion, fitting a stopper ring functioning to apply an axial preload to the components onto the tubular portion, and caulking fixedly the stopper ring and the tubular portion into the groove part.Type: ApplicationFiled: April 5, 2005Publication date: April 20, 2006Inventors: Masao Kohashi, Akito Yokoi, Yoichiro Takahashi, Yoshiyuki Sawada
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Patent number: 6921442Abstract: The present invention relates to a Ni base alloy having sufficient strength at high temperatures and high corrosion resistance at high temperatures in a high-temperature composite corrosive environment in which chlorination or sulfidation occurs simultaneously with high-temperature oxidation, without excessive cooling or surface protection. According to the present invention, a Ni base alloy having high-temperature strength and corrosion resistance includes Cr in a range of from 25 to 40 weight %, Al in a range of from 1.5 to 2.5 weight %, C in a range of from 0.1 to 0.5 weight %, W of 15 weight % or less, Mn of 2.0 weight % or less, Si in a range of from 0.3 to 6 weight %, Fe of 5% or less, and Ni of rest except inevitable impurities. When strength at high temperatures is allowed to be small, W is in a range of from 0 to 8%, and Si is in a range of from 0.3 to 1% or from 1 to 6%. In order to enhance strength at high temperatures, W is in a range of from 8 to 15, and Si is in a range of from 0.Type: GrantFiled: October 24, 2001Date of Patent: July 26, 2005Assignees: Ebara Corporation, Daido Tokushuko Kabushiki KaishaInventors: Manabu Noguchi, Kei Matsuoka, Hiroshi Yakuwa, Akira Uchino, Hideyuki Sakamoto, Michio Okabe, Yoshiyuki Sawada, Shigeki Ueta
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Patent number: 6878268Abstract: Provided are an apparatus and a method for purification of water in which impurities in contaminated water can be removed with a reduced amount of flocculant and with high efficiency. The apparatus comprises, in the order from the side where contaminated water is introduced, an electrolysis tank (1) for electrolyzing the contaminated water, a gas mixing tank (2) for mixing carbon dioxide into the contaminated water electrolyzed, a coagulation tank (3) for mixing Fe3+ supplied from a flocculant producing device (7) to coagulate impurities in the contaminated water, and a floatation tank (4) for floating and separating the impurities coagulated. The electrolysis tank (1) electrolyzes the contaminated water to lower zeta potential of colloid particles in the contaminated water, and then the contaminated water is mixed with Fe3+ in the coagulation tank (3), thereby reducing the amount of positively charged Fe3+ to be added for neutralizing the colloid particles.Type: GrantFiled: September 21, 2001Date of Patent: April 12, 2005Inventor: Yoshiyuki Sawada
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Publication number: 20040112813Abstract: A purifying device comprising a purifying tank (1) having an ultraviolet radiating tube (2) installed within the middle thereof and a submersible pump (3) mounted in the upper region thereof, the purifying tank being held 5 to 100 cm below the water level by floats (7a), a partition (6) to divide the region adjacent to the water level into upper and lower levels, wherein only the water on the upper side of the partition (6) is sucked in by the submersible pump (3) for purification in the purifying tank (1), whereby water-bloom, algae or the like floating on water is rapidly collected and decomposed for removal.Type: ApplicationFiled: June 6, 2003Publication date: June 17, 2004Inventor: Yoshiyuki Sawada
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Publication number: 20040052677Abstract: The present invention relates to a Ni base alloy having sufficient strength at high temperatures and high corrosion resistance at high temperatures in a high-temperature composite corrosive environment in which chlorination or sulfidation occurs simultaneously with high-temperature oxidation, without excessive cooling or surface protection. According to the present invention, a Ni base alloy having high-temperature strength and corrosion resistance includes Cr in a range of from 25 to 40 weight %, Al in a range of from 1.5 to 2.5 weight %, C in a range of from 0.1 to 0.5 weight %, W of 15 weight % or less, Mn of 2.0 weight % or less, Si in a range of from 0.3 to 6 weight %, Fe of 5 % or less, and Ni of rest except inevitable impurities. When strength at high temperatures is allowed to be small, W is in a range of from 0 to 8 %, and Si is in a range of from 0.3 to 1 % or from 1 to 6 %. In order to enhance strength at high temperatures, W is in a range of from 8 to 15, and Si is in a range of from 0.Type: ApplicationFiled: October 3, 2003Publication date: March 18, 2004Inventors: Manabu Noguchi, Kei Matsuoka, Hiroshi Yakuwa, Akira Uchino, Hideyuki Sakamoto, Michio Okabe, Yoshiyuki Sawada, Shigeki Ueta
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Publication number: 20030164409Abstract: A fluid mixing apparatus that mixes a plurality of fluids and switches between supply and stop of these fluid, which is able to reduce the degree of retention of the fluid and mix the fluid smoothly. Even in the case where the flow rate of another fluid is larger than the flow rate of the one fluid or even in the case where the fluid is repeatedly supplied and stopped, since a tip end of a nozzle provided at a fluid exhausting portion of the switching valve is disposed at a center portion of flow of the one fluid, another fluid and the one fluid can be mixed quickly with a simple configuration.Type: ApplicationFiled: March 4, 2002Publication date: September 4, 2003Applicant: HORIBA, LTD.Inventors: Toshikazu Ohnishi, Yoshiyuki Sawada, Seiichi Taniguchi, Yoshimi Matsuura
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Publication number: 20030010686Abstract: Oxygen-dissolved water having an oxygen concentration from 20 to 50 ppm prepared by a high-concentration oxygen water preparation unit (1) is supplied to Fe2+ generated by eluting Fe by a voltage applied to plate electrodes (6), thereby completely and rapidly oxidizing Fe2+ to Fe3+, which is more stable. As Fe3+ is stable, it hardly colors raw water as the water to be treated and does not adversely affect the human body. Therefore, Fe3+ is harmless if discharged without being consumed for coagulation.Type: ApplicationFiled: July 31, 2002Publication date: January 16, 2003Inventors: Yoshiyuki Sawada, Masamichi Kanoh
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Publication number: 20020162801Abstract: Provided are an apparatus and a method for purification of water in which impurities in contaminated water can be removed with a reduced amount of flocculant and with high efficiency. The apparatus comprises, in the order from the side where contaminated water is introduced, an electrolysis tank (1) for electrolyzing the contaminated water, a gas mixing tank (2) for mixing carbon dioxide into the contaminated water electrolyzed, a coagulation tank (3) for mixing Fe3+ supplied from a flocculant producing device (7) to coagulate impurities in the contaminated water, and a floatation tank (4) for floating and separating the impurities coagulated. The electrolysis tank (1) electrolyzes the contaminated water to lower zeta potential of colloid particles in the contaminated water, and then the contaminated water is mixed with Fe3+ in the coagulation tank (3), thereby reducing the amount of positively charged Fe3+ to be added for neutralizing the colloid particles.Type: ApplicationFiled: April 23, 2002Publication date: November 7, 2002Inventor: Yoshiyuki Sawada
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Patent number: 6315893Abstract: A polluted water purification apparatus includes a pump 2 and nozzles 4 for delivering polluted water from a polluted water region to a pressure tank T; a gas supplying device 9, 10 for supplying a gas, e.g. oxygen, to the pressure tank; a water level controlling device 5, 6; a degasifier (e.g. 15); and a discharging device 13 for returning the polluted water to the polluted water region. The degasifier periodically discharges gas from the pressure tank in order to prevent toxic gaseous substances (e.g. ammonia) which accumulate in an upper portion of the pressure tank from re-polluting the water therein whenever a concentration of gas in the pressure tank reaches or exceeds a predetermined level.Type: GrantFiled: May 30, 2000Date of Patent: November 13, 2001Inventor: Yoshiyuki Sawada
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Patent number: 5305072Abstract: A laser scattering particle-sized distribution analyzer includes a rotary table for movably supporting a plurality of sample cups. A camming mechanism associated with each sample cup holder can be activated to invert a sample cup at a discharge station. Diluting fluid can be sprayed into the inverted cup to ensure a complete discharge of the sample. The sample is then appropriately mixed to ensure the creation of a homogeneous sample with sufficient diluting fluid and delivered to a sample cell for measurement with the laser and detector system.Type: GrantFiled: August 12, 1992Date of Patent: April 19, 1994Assignee: Horiba, Ltd.Inventors: Yoshiyuki Sawada, Toshiya Itoh