Patents by Inventor Yannick Nen
Yannick Nen 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: 8209978Abstract: The invention relates to a motor vehicle master cylinder (1). More specifically, the invention relates to a piston (4, 5) of the master cylinder which has a first indentation (24) and a second indentation (27), which indentations are formed upstream of a port (13, 14) of the piston. The first indentation and the second indentation delimit a space within which hydraulic brake fluid can be stored so that it can be tapped off by an auxiliary braking device of the E.S.P. type.Type: GrantFiled: November 6, 2008Date of Patent: July 3, 2012Assignee: Robert Bosch GmbHInventors: Yannick Nen, Omar Brahml, Marc Noblet, Dominique Rault, Philippe Bourlon, Lionel Bourgols, Jérémy Labarre
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Patent number: 8141960Abstract: A vehicle braking assembly comprising a master cylinder (10) with no central valves, a brake fluid reservoir (62) mounted separately from the master cylinder (10), pumps (50) for pressurizing the brake fluid and first solenoid valves (68) in pipes (66) connecting the brake fluid reservoir (62) to the inlets of the pumps (50). According to the invention, a calibrated orifice (76) and a nonreturn valve (78) which are connected in parallel are mounted in these pipes (66).Type: GrantFiled: August 28, 2007Date of Patent: March 27, 2012Assignee: Robert Bosch GmbHInventors: Bruno Beylerian, Yannick Nen, Etienne Durand, Nicolas Marlhe, Jean-Marc Piel, Aleksander Hurwic
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Patent number: 7856918Abstract: A pneumatic brake booster 1 comprising: a sealed structure 3 comprising a rigid casing 11 forming a funnel 19 furnished with an opening and a movable wall 13 dividing the sealed structure 3 into a low-pressure chamber 25 and a working chamber 27, a pneumatic piston 5 comprising a boss 31 fixedly attached to the movable wall 13 and mounted so as to slide in the funnel opening, a valve element 33 housed in the boss 31 and a seal 35 positioned between the boss 31 and the funnel 19, an input rod 7 and an output rod 9 coupled on either side of the pneumatic piston 5, and a return spring 37 to return the pneumatic piston 5 to a rest position, the return spring 37 being placed in the low-pressure chamber 25 between an internal surface 45 of the rigid casing and the pneumatic piston 5, and a force sensor 39 placed in the low-pressure chamber 25 and subjected to the pressure variations of the return spring 37.Type: GrantFiled: December 5, 2007Date of Patent: December 28, 2010Assignee: Robert Bosch GmbHInventors: Yannick Nen, Olivier Bernadat, Bruno Beylerian, Omar Brahmi
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Publication number: 20100237688Abstract: A vehicle braking assembly comprising a master cylinder (10) with no central valves, a brake fluid reservoir (62) mounted separately from the master cylinder (10), pumps (50) for pressurizing the brake fluid and first solenoid valves (68) in pipes (66) connecting the brake fluid reservoir (62) to the inlets of the pumps (50). According to the invention, a calibrated orifice (76) and a nonreturn valve (78) which are connected in parallel are mounted in these pipes (66).Type: ApplicationFiled: August 28, 2007Publication date: September 23, 2010Applicant: ROBERT BOSCH GMBHInventors: Bruno Beylerian, Yannick Nen, Etienne Durand, Nicolas Marlhe, Jean-Marc Piel, Aleksander Hurwic
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Publication number: 20090273228Abstract: Motor vehicle braking installation comprising a master cylinder (10) operated by a brake pedal and connected to a brake fluid reservoir (30) and to feed circuits (26, 28) supplying the wheel brakes, characterized in that the brake fluid reservoir (30) is mounted on the master cylinder and is connected to the master cylinder (10) by connecting means (32, 34) involving electrically operated valves (36, 38) which valves are closed in the rest position and are made to open by a computer (C) on the basis of an output signal from a position sensor or displacement transducer (40) associated with the brake pedal or with the said element moved by this pedal.Type: ApplicationFiled: August 29, 2007Publication date: November 5, 2009Applicant: ROBERT BOSCH GMBHInventors: Yannick Nen, Aleksander Hurwic, Bruno Beylerian, Etienne Durand, Nicolas Marlhe, Jean-Marc Piel
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Publication number: 20090126362Abstract: The invention relates to a motor vehicle master cylinder (1). More specifically, the invention relates to a piston (4, 5) of the master cylinder which has a first indentation (24) and a second indentation (27), which indentations are formed upstream of a port (13, 14) of the piston. The first indentation and the second indentation delimit a space within which hydraulic brake fluid can be stored so that it can be tapped off by an auxiliary braking device of the E.S.P. type.Type: ApplicationFiled: November 6, 2008Publication date: May 21, 2009Applicant: ROBERT BOSCH GMBHInventors: Yannick Nen, Omar Brahmi, Marc Noblet, Dominique Rault, Philippe Bourlon, Lionel Bourgois, Jeremy Labarre
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Publication number: 20080134874Abstract: A pneumatic brake booster 1 comprising: a sealed structure 3 comprising a rigid casing 11 forming a funnel 19 furnished with an opening and a movable wall 13 dividing the sealed structure 3 into a low-pressure chamber 25 and a working chamber 27, a pneumatic piston 5 comprising a boss 31 fixedly attached to the movable wall 13 and mounted so as to slide in the funnel opening, a valve element 33 housed in the boss 31 and a seal 35 positioned between the boss 31 and the funnel 19, an input rod 7 and an output rod 9 coupled on either side of the pneumatic piston 5, and a return spring 37 to return the pneumatic piston 5 to a rest position, the return spring 37 being placed in the low-pressure chamber 25 between an internal surface 45 of the rigid casing and the pneumatic piston 5, and a force sensor 39 placed in the low-pressure chamber 25 and subjected to the pressure variations of the return spring 37.Type: ApplicationFiled: December 5, 2007Publication date: June 12, 2008Applicant: ROBERT BOSCH GMBHInventors: Yannick Nen, Olivier Bernadat, Bruno Beylerian, Omar Brahmi
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Patent number: 7343741Abstract: A master cylinder (1) having a bore (3) fitted with at least one piston (4, 5) and at least one seal (19, 20, 21, 22). The seal (19, 20, 21, 22) is partially stiffened by a reinforcement member (25). In order to retain the piston (4,5) in the bore (3) a groove (31) is located on a circumference of the piston (4,5) against which the sealing member (25) bears with the piston (4,5) in a rest position to retain the piston (4,5) in bore (3).Type: GrantFiled: September 19, 2006Date of Patent: March 18, 2008Assignee: Robert Bosch, GmbHInventors: Olivier Bernadat, Yannick Nen, Bruno Beylerian, Philippe Bourlon
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Publication number: 20070068154Abstract: A master cylinder (1) having a bore (3) fitted with at least one piston (4, 5) and at least one seal (19, 20, 21, 22). The seal (19, 20, 21, 22) is partially stiffened by a reinforcement member (25). In order to retain the piston (4,5) in the bore (3) a groove (31) is located on a circumference of the piston (4,5) against which the sealing member (25) bears with the piston (4,5) in a rest position to retain the piston (4,5) in bore (3).Type: ApplicationFiled: September 19, 2006Publication date: March 29, 2007Inventors: Oliver Bernadat, Yannick Nen, Bruno Beylerian, Philippe Bourlon
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Patent number: 6959547Abstract: This master cylinder comprises a body (12) defining a primary pressure chamber (14) and a secondary pressure chamber (16), separated by an axially movable piston (22), the so-called secondary piston; means (28) for the hydraulic connection of the primary pressure chamber (14) with braking-force simulation means (30); and complementary moving and stationary means (32, 34) for the sealing of the hydraulic connection means (28). The moving and stationary sealing means (32, 34) are borne by the secondary piston (22) and the body (12) respectively. The secondary piston (22) is axially movable between a rest position, in which the complementary sealing means (32, 34) are spaced apart from each other, and a position in which said complementary sealing means (32, 34) are cooperating with each other.Type: GrantFiled: September 10, 2002Date of Patent: November 1, 2005Assignee: Robert Bosch GmbHInventors: Nathalie Beccafico, Jean-Pierre Delage, Yannick Nen, Stéphane Manfredini
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Patent number: 6837048Abstract: A master cylinder having a body with a bore therein delimited by a piston into a work chamber and a supply chamber. The work chamber (16) is connected to wheel brakes, while the supply chamber is connected to a fluid supply, through a supply duct. The piston has a shank retained by a guide ring mounted in the bore and a head bears against a thrust ring in a rest position. A first end of the supply duct is connected to the fluid supply, while a end is connected to the supply chamber. A hydraulic damping arrangement that dampens movement of the piston toward the thrust ring and includes structure for shutting off the second end of the supply duct such that brake fluid flows at a reduced flow rate from the supply chamber to the supply duct through at least one exhaust duct.Type: GrantFiled: March 21, 2003Date of Patent: January 4, 2005Assignee: Robert Bosch GmbHInventors: Christoph Pietsch, Yannick Nen, Henry Pagot, Christoph Nehr, Raynald Sprocq, Omar Brahmi, Jean-Yves Dreo
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Publication number: 20040239175Abstract: This master cylinder comprises a body (12) defining a primary pressure chamber (14) and a secondary pressure chamber (16), separated by an axially movable piston (22), the so-called secondary piston; means (28) for the hydraulic connection of the primary pressure chamber (14) with braking-force simulation means (30); and complementary moving and stationary means (32, 34) for the sealing of the hydraulic connection means (28). The moving and stationary sealing means (32, 34) are borne by the secondary piston (22) and the body (12) respectively. The secondary piston (22) is axially movable between a rest position, in which the complementary sealing means (32, 34) are spaced apart from each other, and a position in which said complementary sealing means (32, 34) are cooperating with each other.Type: ApplicationFiled: March 19, 2004Publication date: December 2, 2004Inventors: Nathalie Beccafico, Jean-Pierre Delage, Yannick Nen, Stephane Manfredini
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Publication number: 20030178262Abstract: A master cylinder comprising a body of longitudinal axis (X) pierced with a bore of axis (X) for receiving a piston (10). The piston (10) comprising a piston head (32) and a piston shank (34) connected to the piston head (32) via a shoulder (36). The piston shank (34) is guided by a guide ring (38) mounted fixedly in the piston body with the piston head (32) coming at rest to bear against a thrust ring (42) via the shoulder (36) in the bore. The piston (10) delimits a work chamber (16) within the bore that is in communication with a supply chamber (14) containing brake fluid in a rest position and with the brakes by way of a valve device (18) arranged in the body of the piston (10) during a brake application.Type: ApplicationFiled: March 21, 2003Publication date: September 25, 2003Inventors: Christoph Pietsch, Yannick Nen, Henry Pagot, Christophe Nehr, Raynald Sprocq, Omar Brahmi, Jean-Yves Dreo