Patents by Inventor Sylvain Brouillet
Sylvain Brouillet 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: 11655731Abstract: An oil supply system for supplying oil to a lubricating cavity of a gas turbine engine, the oil supply system has: a de-oiler having a de-oiler air-oil inlet, a de-oiler oil outlet hydraulically connected to the lubricating cavity, and a de-oiler air outlet in fluid flow communication with an environment outside of the oil supply system; and a closed-loop oil circuit including a main pump having a main pump inlet and a main pump outlet, the main pump outlet hydraulically connected to the lubricating cavity, a de-aerator having a de-aerator inlet hydraulically connected to a scavenge outlet of the lubricating cavity, a de-aerator air-oil outlet in fluid flow communication with the de-oiler inlet, and a de-aerator oil outlet hydraulically connected to the main pump inlet.Type: GrantFiled: February 14, 2020Date of Patent: May 23, 2023Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Pierre-Yves Legare, Sylvain Brouillet, Daniel Alecu, Sam Cutrara, Rose Beaulieu
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Publication number: 20210254506Abstract: An oil supply system for supplying oil to a lubricating cavity of a gas turbine engine, the oil supply system has: a de-oiler having a de-oiler air-oil inlet, a de-oiler oil outlet hydraulically connected to the lubricating cavity, and a de-oiler air outlet in fluid flow communication with an environment outside of the oil supply system; and a closed-loop oil circuit including a main pump having a main pump inlet and a main pump outlet, the main pump outlet hydraulically connected to the lubricating cavity, a de-aerator having a de-aerator inlet hydraulically connected to a scavenge outlet of the lubricating cavity, a de-aerator air-oil outlet in fluid flow communication with the de-oiler inlet, and a de-aerator oil outlet hydraulically connected to the main pump inlet.Type: ApplicationFiled: February 14, 2020Publication date: August 19, 2021Inventors: Pierre-Yves LEGARE, Sylvain BROUILLET, Daniel ALECU, Sam CUTRARA, Rose BEAULIEU
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Patent number: 10918989Abstract: There is disclosed an air-oil separator for a gas turbine engine. The separator has a first separator section having a first separator rotatably mounted about a rotation axis and having an air-oil mixture inlet and an air-oil mixture outlet; a second separator section having a second separator rotatable about the rotation axis, the second separator having a first air-oil mixture inlet fluidly connected to the air-oil mixture outlet of the first separator, and a second air-oil mixture inlet; and an air outlet. A first flow path extends from the first air-oil mixture inlet to the air outlet through the two separator sections, and a second flow path extends from the second air-oil mixture inlet to the air outlet, solely through the second separator section A method of operating an air-oil separator is also disclosed.Type: GrantFiled: April 10, 2018Date of Patent: February 16, 2021Inventor: Sylvain Brouillet
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Patent number: 10870079Abstract: There is disclosed a separator having a first separator and a matrix separator. The first separator caters to an air-oil mixture having a first oil concentration and the matrix separator caters to an air-oil mixture having a second oil concentration being less than the first oil concentration. The matrix separator is disposed at least partially concentrically within the first separator. A wall is disposed radially between the first and second separators. A radial passage extends through the wall. An air-oil mixture outlet of the first separator is fluidly connected to an air-oil mixture inlet of the matrix separator via the radial passage. At least one passage extends radially outwardly from the matrix separator across the first separator. The at least one passage fluidly connects the matrix separator to an environment outside the air-oil separator. A method of removing oil from an air-oil mixture is also disclosed.Type: GrantFiled: April 10, 2018Date of Patent: December 22, 2020Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Sylvain Brouillet, Pierre Gauvin
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Publication number: 20190308128Abstract: There is disclosed a separator having a first separator and a matrix separator. The first separator caters to an air-oil mixture having a first oil concentration and the matrix separator caters to an air-oil mixture having a second oil concentration being less than the first oil concentration. The matrix separator is disposed at least partially concentrically within the first separator. A wall is disposed radially between the first and second separators. A radial passage extends through the wall. An air-oil mixture outlet of the first separator is fluidly connected to an air-oil mixture inlet of the matrix separator via the radial passage. At least one passage extends radially outwardly from the matrix separator across the first separator. The at least one passage fluidly connects the matrix separator to an environment outside the air-oil separator. A method of removing oil from an air-oil mixture is also disclosed.Type: ApplicationFiled: April 10, 2018Publication date: October 10, 2019Inventors: Sylvain BROUILLET, Pierre GAUVIN
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Publication number: 20190308129Abstract: There is disclosed an air-oil separator for a gas turbine engine. The separator has a first separator section having a first separator rotatably mounted about a rotation axis and having an air-oil mixture inlet and an air-oil mixture outlet; a second separator section having a second separator rotatable about the rotation axis, the second separator having a first air-oil mixture inlet fluidly connected to the air-oil mixture outlet of the first separator, and a second air-oil mixture inlet; and an air outlet. A first flow path extends from the first air-oil mixture inlet to the air outlet through the two separator sections, and a second flow path extends from the second air-oil mixture inlet to the air outlet, solely through the second separator section A method of operating an air-oil separator is also disclosed.Type: ApplicationFiled: April 10, 2018Publication date: October 10, 2019Inventor: Sylvain BROUILLET
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Patent number: 8201664Abstract: An aircraft engine lubrication system has a vortex separator, a first pump line having a first pump, an inlet connected to a separated lubricant area at the outlet end of the separator, and an outlet connectable to the engine. A scavenge line is provided for returning lubricant from the engine to an inlet end of the separator. A lubricant tank is connected in fluid flow communication with the separator by a connection line. A second pump line having a second pump has an inlet connected to the lubricant tank and an outlet connected to the separator for pumping lubricant from the tank to the inlet end of the separator.Type: GrantFiled: January 23, 2008Date of Patent: June 19, 2012Assignee: Pratt & Whitney Canada Corp.Inventors: Sylvain Brouillet, Pierre-Yves Légaré
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Publication number: 20090183950Abstract: An aircraft engine lubrication system has a vortex separator, a first pump line having a first pump, an inlet connected to a separated lubricant area at the outlet end of the separator, and an outlet connectable to the engine. A scavenge line is provided for returning lubricant from the engine to an inlet end of the separator. A lubricant tank is connected in fluid flow communication with the separator by a connection line. A second pump line having a second pump has an inlet connected to the lubricant tank and an outlet connected to the separator for pumping lubricant from the tank to the inlet end of the separator.Type: ApplicationFiled: January 23, 2008Publication date: July 23, 2009Inventors: Sylvain BROUILLET, Pierre-Yves Legare
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Patent number: 6793042Abstract: A lubrication system for lubricating gas turbine engine components and accessory components separately comprises first and second lubricant circulating circuits for separately feeding lubricant to the engine components and the accessory components. The system further includes a supply tank with first and second separate chambers respectively connected in fluid flow communication with the first and second lubricant circulating circuits. A filler port is defined in the tank for allowing the first chamber to be filled with lubricant. A filling and level maintaining circuit is connected to the first lubricant circulating circuit for directing a portion of the lubricant fluid pumped from the first chamber into the second chamber, thereby obviating the need for a second filler port.Type: GrantFiled: July 24, 2002Date of Patent: September 21, 2004Assignee: Pratt & Whitney Canada Corp.Inventor: Sylvain Brouillet
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Publication number: 20040016601Abstract: A lubrication system for lubricating gas turbine engine components and accessory components separately comprises first and second lubricant circulating circuits for separately feeding lubricant to the engine components and the accessory components. The system further includes a supply tank with first and second separate chambers respectively connected in fluid flow communication with the first and second lubricant circulating circuits. A filler port is defined in the tank for allowing the first chamber to be filled with lubricant. A filling and level maintaining circuit is connected to the first lubricant circulating circuit for directing a portion of the lubricant fluid pumped from the first chamber into the second chamber, thereby obviating the need for a second filler port.Type: ApplicationFiled: July 24, 2002Publication date: January 29, 2004Inventor: Sylvain Brouillet
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Patent number: 6398833Abstract: A centrifugal separator for separating oil suspended in air and especially intended for use with aircraft engines includes a rotatable chamber filled with a relatively rigid porous material and is driven by a hollow shaft. An inlet for the mixture of air and oil is provided in one end wall of the chamber and separate outlets for oil and air are provided in the outer and inner cylindrical walls of the chamber respectively. Oil droplets are formed in the rigid porous material and ejected out through the oil outlet under centrifugal forces while air relatively free from oil exits the air outlet and enters into the inside of the hollow shaft under the pressure difference. A cut-away area is formed in the rigid porous material to facilitate ejection from the separator of the oil droplets formed in the porous material to clear the passages of the porous material and facilitate a continuous movement of the mixture of air and oil mist.Type: GrantFiled: November 6, 2000Date of Patent: June 4, 2002Assignee: Pratt & Whitney Canada Corp.Inventors: Richard Santerre, Sylvain Brouillet
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Patent number: 6098753Abstract: A system for delivering a pressurized lubricant fluid from a stationary source to an interior of a drive shaft of a gas turbine engine which rotates at high speed and operates at high temperatures, includes a pair of axially spaced-apart seals that surround the shaft. The pressurized lubricant fluid is delivered to a radial passage defined between the seals. To ensure reliable operation under the high speed and high temperature conditions, the seals are constructed so that a film of the lubricant fluid is formed between the rotating shaft and the seals. The seals float on the film and wear is reduced. In order to minimize variations in the space between the seals and the shaft caused by changes in operating temperatures, each seal is surrounded by a control ring of material having a coefficient of expansion similar to the material of the shaft. The advantage is reliable delivery of lubricant to a shaft rotating at high speed in a high temperature environment.Type: GrantFiled: June 5, 1998Date of Patent: August 8, 2000Assignee: Pratt & Whitney Canada Corp.Inventors: Sylvain Lamarre, Sylvain Brouillet