Patents Assigned to Hydro Leduc
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Patent number: 10690124Abstract: The invention relates to a hydraulic pump wherein a barrel is in sliding connection with a shaft and is driven in rotation by the shaft. A housing is formed in the barrel, the shaft sliding in the housing while projecting from the front face of the barrel. The housing and the shaft defining between them a balancing chamber, the balancing chamber being connected to a delivery aperture in such a way that fluid in the balancing chamber exerts a compressive force on the barrel which tends to press the barrel against a port plate.Type: GrantFiled: December 6, 2017Date of Patent: June 23, 2020Assignee: Hydro LeducInventor: Louis-Claude Porel
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Patent number: 10017228Abstract: A hydraulic depth-control device for a submersible body comprises: a variable-volume ballast space, a pressure accumulator comprising a hydraulic chamber and a gas chamber, which chambers are separated by a deformable or mobile wall, the gas chamber containing a gas at an absolute pressure higher than atmospheric pressure, a hydraulic pump coupled to an electric motor, the hydraulic pump having a suction inlet connected to the ballast space and a delivery outlet connected to the hydraulic chamber of the pressure accumulator, a return hydraulic circuit connecting the hydraulic chamber of the pressure accumulator to the ballast space via an electrically operated valve, and a hydraulic fluid arranged in the ballast space, the hydraulic pump, the hydraulic chamber of the pressure accumulator and the return hydraulic circuit.Type: GrantFiled: September 25, 2015Date of Patent: July 10, 2018Assignee: HYDRO LEDUCInventor: Louis-Claude Porel
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Publication number: 20130192898Abstract: Method for blocking/braking at least one conical inlet wheel of a drilling-bit of a drilling tool, said method consisting in using at least one toothed wheel (1) of said drilling-bit as an element for driving a hydraulic pump (P) which pumps in a closed circuit (17), said circuit including a controlled distributor (9) in order to take up either an open position or a closed position; such that, in the open position, the pump runs freely without absorbing energy, and that, in the closed position, said pump (P) is hydraulically blocked, which blocks the rotation of the toothed wheel (1).Type: ApplicationFiled: January 25, 2013Publication date: August 1, 2013Applicant: HYDRO LEDUCInventor: HYDRO LEDUC
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Publication number: 20120034113Abstract: Device for pumping fluid located under conditions of high ambient temperature and pressure which must deliver at high pressure including a hydraulic delivery pump (11) linked to a hydraulic motor (40), characterised in that the hydraulic motor (40) is connected to the hydraulic delivery pump (10) by a shaft (41), the shaft (41) passing through a leaktight rotating seal (50) which separates the hydraulic fluid (42) returned from the hydraulic motor (40) from the lubricating fluid (5) for the hydraulic pump (10).Type: ApplicationFiled: September 14, 2010Publication date: February 9, 2012Applicant: HYDRO LEDUCInventor: Louis-Claude POREL
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Patent number: 7779745Abstract: An automatic-locking hydraulic jack has a piston (1, 30) that slides into a cylinder (3-2, 32). Locking of the piston is achieved by elastic deformation of either the inside wall (2) of the cylinder or of the outside wall of the piston (30) so as to ensure that the one is tightly clamped over the other. The locking of the jack is maintained by pressure that causes the elastic deformation of the inside wall of the cylinder (3-2) or of the outside wall of the piston (30), until the jack is unlocked by neutralizing the elastic deformation.Type: GrantFiled: August 7, 2007Date of Patent: August 24, 2010Assignee: Hydro LeducInventor: Louis-Claude Porel
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Publication number: 20080054239Abstract: Automatic-locking hydraulic jack of the type that includes a piston (1, 30) that slides into a cylinder (3-2, 32), in which the locking of the piston is achieved by elastic deformation of either the inside wall (2) of the cylinder or of the outside wall of the piston (30) so as to ensure that the one is tightly clamped over the other, characterized by the fact that the locking of the jack is achieved permanently by way of pressure that causes the elastic deformation of the inside wall of the cylinder (3-2) or of the outside wall of the piston (30), whereby the unlocking of the jack is achieved by neutralizing this permanent deformation.Type: ApplicationFiled: August 7, 2007Publication date: March 6, 2008Applicant: HYDRO LEDUCInventor: Louis-Claude Porel
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Publication number: 20080025850Abstract: Spring barrel pump characterized by the fact that the bores (2) in which the pistons (4) move are provided by way of the spring barrel (1) diametrically to its axis (XX).Type: ApplicationFiled: July 26, 2007Publication date: January 31, 2008Applicant: HYDRO LEDUCInventor: Louis-Claude Porel
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Patent number: 7178449Abstract: Hydraulic device driving a rotating receiver such as a shaft (1) includes at least one hydraulic motor having axial pistons (7) bearing against a fixed swash-plate (9) via shoes (10), the pistons (7) being arranged in a rotating barrel (5), characterized by the fact that the motor shaft (1) carries a toothed crown wheel (2) with which it is integral whose teeth are engaged by teeth (4) provided on the periphery of the rotating barrel (5) of one or more hydraulic motors (7) arranged around the shaft (1), the axis of axes of the barrel (5) being parallel to the axis of the shaft (1).Type: GrantFiled: July 11, 2005Date of Patent: February 20, 2007Assignee: Hydro LeducInventor: Louis-Claude Porel
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Publication number: 20060005698Abstract: Hydraulic device driving a rotating receiver such as a shaft (1) includes at least one hydraulic motor having axial pistons (7) bearing against a fixed swash-plate (9) via shoes (10), the pistons (7) being arranged in a rotating barrel (5), characterized by the fact that the motor shaft (1) carries a toothed crown wheel (2) with which it is integral whose teeth are engaged by teeth (4) provided on the periphery of the rotating barrel (5) of one or more hydraulic motors (7) arranged around the shaft (1), the axis of axes of the barrel (5) being parallel to the axis of the shaft (1).Type: ApplicationFiled: July 11, 2005Publication date: January 12, 2006Applicant: HYDRO LEDUCInventor: Louis-Claude Porel