Patents by Inventor David Gras
David Gras 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).
-
Patent number: 10264633Abstract: An optoelectronic circuit for receiving a variable voltage containing alternating increasing and decreasing phases. The optoelectronic circuit includes assemblies of light-emitting diodes mounted in series; a current source connected to each assembly by a switch; for each switch, a first comparison module for comparing the current passing through the switch with a current threshold; a second comparison module for comparing a voltage representing the voltage at the terminals of the current source with a voltage threshold; and a control module connected to the first and second comparison modules and designed to control the opening and closing of the switches, during each increasing phase and each decreasing phase, according to signals supplied by the first and second comparison modules.Type: GrantFiled: July 19, 2016Date of Patent: April 16, 2019Assignee: AlediaInventors: Frédéric Mercier, David Gras, Nicolas Joubert
-
Patent number: 10076008Abstract: The invention relates to an optoelectronic circuit intended to receive, between a first node and a second node, a variable voltage, the optoelectronic circuit including: a plurality of light-emitting diodes series-assembled between the first node and a third node; a first current limitation/regulation circuit assembled between the third node and the second node; a switching circuit coupling the third node to at least certain light-emitting diodes of the plurality of light-emitting diodes; a capacitor including first and second plates; a first diode having its cathode connected to the second plate and having its anode coupled to the second node; and a second diode having its anode connected to the second plate and having its cathode coupled to the third node or to a second current limitation/regulation circuit.Type: GrantFiled: March 24, 2017Date of Patent: September 11, 2018Assignee: EASII ICInventors: David Gras, Olivier Valorge
-
Patent number: 10064250Abstract: The invention relates to an optoelectronic circuit intended to receive, between a first node and a second node, a variable voltage, the optoelectronic circuit including: a plurality of light-emitting diodes series-assembled between the first node and a third node; a first current limitation/regulation circuit assembled between the third node and the second node; a switching circuit coupling the third node to at least certain light-emitting diodes of the plurality of light-emitting diodes; a capacitor including first and second plates; a first diode having its cathode connected to the second plate and having its anode coupled to the second node; and a second diode having its anode connected to the second plate and having its cathode coupled to the third node or to a second current limitation/regulation circuit.Type: GrantFiled: March 24, 2017Date of Patent: August 28, 2018Assignee: EASII ICInventors: David Gras, Olivier Valorge
-
Publication number: 20180227992Abstract: An optoelectronic circuit for receiving a variable voltage containing alternating increasing and decreasing phases. The optoelectronic circuit includes assemblies of light-emitting diodes mounted in series; a current source connected to each assembly by a switch; for each switch, a first comparison module for comparing the current passing through the switch with a current threshold; a second comparison module for comparing a voltage representing the voltage at the terminals of the current source with a voltage threshold; and a control module connected to the first and second comparison modules and designed to control the opening and closing of the switches, during each increasing phase and each decreasing phase, according to signals supplied by the first and second comparison modules.Type: ApplicationFiled: July 19, 2016Publication date: August 9, 2018Applicants: Aledia, Easii ICInventors: Frédéric Mercier, David Gras, Nicolas Joubert
-
Patent number: 9974133Abstract: An optoelectronic circuit intended to receive a variable voltage containing an alternation of rising and falling phases. The optoelectronic circuit includes assemblies of series-assembled light-emitting diodes, a node coupled to each assembly by a conduction circuit having its electric conductance varying according to a control signal and a control circuit coupled to each conduction circuit and capable of supplying each control signal based on the comparison of a first voltage at said node with at least a second voltage. The control circuit includes a difference amplifier and as many output stages as there are conduction circuits, the control circuit being capable of controlling the first voltage with the second voltage offset by a third voltage, different for each output stage.Type: GrantFiled: September 29, 2017Date of Patent: May 15, 2018Assignee: EASII ICInventors: David Gras, Thomas Peysson
-
Publication number: 20180098394Abstract: An optoelectronic circuit intended to receive a variable voltage containing an alternation of rising and falling phases. The optoelectronic circuit includes assemblies of series-assembled light-emitting diodes, a node coupled to each assembly by a conduction circuit having its electric conductance varying according to a control signal and a control circuit coupled to each conduction circuit and capable of supplying each control signal based on the comparison of a first voltage at said node with at least a second voltage. The control circuit includes a difference amplifier and as many output stages as there are conduction circuits, the control circuit being capable of controlling the first voltage with the second voltage offset by a third voltage, different for each output stage.Type: ApplicationFiled: September 29, 2017Publication date: April 5, 2018Inventors: David GRAS, Thomas PEYSSON
-
Publication number: 20170280520Abstract: The invention relates to an optoelectronic circuit intended to receive, between a first node and a second node, a variable voltage, the optoelectronic circuit including: a plurality of light-emitting diodes series-assembled between the first node and a third node; a first current limitation/regulation circuit assembled between the third node and the second node; a switching circuit coupling the third node to at least certain light-emitting diodes of the plurality of light-emitting diodes; a capacitor including first and second plates; a first diode having its cathode connected to the second plate and having its anode coupled to the second node; and a second diode having its anode connected to the second plate and having its cathode coupled to the third node or to a second current limitation/regulation circuit.Type: ApplicationFiled: March 24, 2017Publication date: September 28, 2017Inventors: David GRAS, Olivier VALORGE
-
Publication number: 20170280526Abstract: The invention relates to an optoelectronic circuit (20) intended to receive, between a first node (A1) and a second node (A2), a variable voltage (VRECT), the optoelectronic circuit including: a plurality of light-emitting diodes (Di) series-assembled between the first node and a third node; a first current limitation/regulation circuit (14) assembled between the third node and the second node; a switching circuit (16) coupling the third node to at least certain light-emitting diodes of the plurality of light-emitting diodes; a capacitor (Cap) including first and second plates; a first diode (D0D) having its cathode connected to the second plate and having its anode coupled to the second node; and a second diode (D0C) having its anode connected to the second plate and having its cathode coupled to the third node or to a second current limitation/regulation circuit (38).Type: ApplicationFiled: March 24, 2017Publication date: September 28, 2017Inventors: David GRAS, Olivier VALORGE
-
Patent number: 7458293Abstract: A pedal security system for pedal mounting, particularly for motor vehicles, includes a pedal rotatably mounted on a pedal axis, an opening for receiving and retaining the pedal axis which is connected with an expandable slot wherein the expandable slot receives the pedal axis by exceeding a mechanical limit load of the pedal axis.Type: GrantFiled: May 19, 2003Date of Patent: December 2, 2008Assignee: FICO Cables, S.A.Inventors: Jaume Prat Terradas, David A. Gras
-
Patent number: 7421927Abstract: The invention relates to a ratio regulating mechanism for an manually actuated action lever, like a hand brake lever or a pedal, in particular for the use in a motor vehicle, which comprises a mounting (2), an action lever arm (20) and a rotational shaft (15) for rotably mounting of the action lever arm (20) at the mounting (2), wherein the rotational shaft (15) is relocatably mounted at the action lever arm (20) and relocatably mounted at the mounting (2). Further, the ratio regulating mechanism comprises a first adjustment means (19, 21) for the relocation of the rotational shaft (15) in relation to the action lever arm (20) and a second adjustment means (22, 23) for the relocation of the rotational shaft (15) in relation to the mounting (2).Type: GrantFiled: November 24, 2003Date of Patent: September 9, 2008Assignee: Fico Cables, S.A.Inventors: Jaume Prat Terradas, David Gras Alonso, Daniel M. Uribe-Echebarria
-
Publication number: 20060222456Abstract: The present invention relates to a self-locking shaft (1), which comprises a shaft portion (10) and a head portion (20) for the mounting of the shaft (1) at a support (50), wherein the head portion (20) comprises resilient clips (30), which latch with the support (50) during a rotational mounting motion of the (1) with respect to the support (50). Further, this invention relates to a support (50) for a self-locking shaft (1) as well as a method for the assembly of a self-locking shaft (1) within a support (50).Type: ApplicationFiled: April 5, 2004Publication date: October 5, 2006Inventors: Josep Villa, Jaume Prat, Revilla Sanchez, David Gras, David Aloy, Jordi Vidal
-
Publication number: 20060175157Abstract: The present Invention relates to a parking brake lever unit 1 for the use in a motor vehicle, comprising a parking brake lever 10 made of plastic material, a support 20 made of plastic material, at which the parking brake lever 1 is pivotably supported and a locking unit 40, 26, comprising a pawl 40, which is mounted at the parking brake lever 10, and a ratchet insert 26, wherein the ratchet insert 26 comprises of a metal and is over molded within the support 20.Type: ApplicationFiled: April 5, 2004Publication date: August 10, 2006Inventors: Josep Villa, Jaume Prat, Eduaroo Revilla, David Gras, David Aloy, Jordi Vidal
-
Publication number: 20060169092Abstract: This invention relates to an adjustable position pedal (20), in particular for the use in a motor vehicle, which comprises a subpedal (1), which is pivotably mounted at the motor vehicle, a pedal (4), which is slideably arranged at the subpedal (1), as well as a positioning element (8), which is pivotably mounted at the subpedal (1) and slideably mounted at the pedal (4), so that the pedal (4) glides relatively to the subpedal (1) during a pivoting of the positioning element (8).Type: ApplicationFiled: November 24, 2003Publication date: August 3, 2006Inventors: Jaume Prat Terradas, David Gras Alonso, Daniel Monedero Uribe-Echebarria
-
Publication number: 20050172684Abstract: The present invention relates to a pedal security system for pedal mounting, particularly for motor vehicles, comprising a pedal rotatably mounted by means of a pedal axis, an opening for receiving and retaining said pedal axis which is connected with an expandable slot wherein said expandable slot receives said pedal axis by exceeding a mechanical limit load of the pedal axis.Type: ApplicationFiled: May 19, 2003Publication date: August 11, 2005Inventors: Jaume Terradas, David Gras
-
Publication number: 20050175398Abstract: The present invention relates to a connecting element (40, 60) for releasably connecting a first component (10) and a second component (20), particularly for releasably connecting an actuator with a pedal of a motor vehicle, wherein forces parallel to the assembly direction are transmitted by the connecting element. The connecting element (40, 60) comprises a connecting means (40) which is attached to the second component (20) and a sled (60), which can receive a fatening end (30) of said first part (10) and which latches in the connecting means (40) in its fastening position. The connecting means (40) is preferably configured in one-piece-form as a housing (40), wherein the sled (60), which is connected to the actuating means (10), is connected to the housing (40) in fastened condition and wherein the sled (60) can be released by means of a tool.Type: ApplicationFiled: November 21, 2002Publication date: August 11, 2005Inventors: Juan Contero, David Gras
-
Publication number: 20040129106Abstract: The present invention relates to an adjustable pedal, in particular for motor vehicles, by means of which the pedal foot, to be actuated, of the pedal is set optimally to the driver's size. During the adjustment of the pedal, the pedal foot is displaced parallel to the longitudinal axis of the vehicle. For this purpose, the adjustable pedal has a pedal and at least one subpedal and also a linkage adjustable by means of an actuator, the actuator changing the angular relationship between adjacent components of the linkage.Type: ApplicationFiled: January 8, 2003Publication date: July 8, 2004Inventors: Jaume Terradas Prat, David Gras Alonso