Patents Assigned to LDL Technology
  • Patent number: 10682892
    Abstract: The invention relates to a method for managing data relating to an assembly forming a wheel (R) of a vehicle (C), said wheel (R) including a tyre mounted on a rim, said wheel having a measurement module (110), said tyre having an identifier made up of a radio tag (200) such as an RFID marker, said wheel being capable of having different states: mounted in which said tyre is mounted on the rim; and unmounted in which said tyre is not mounted on the rim, in which the measurement module (110) detects a pressure variation inside the tyre, and in which the storage memory of said measurement module (110) is rewritable, characterised in that said method consists of in the event of a pressure variation, replacing the data stored in the measurement module (110) with new data from another tyre. The invention is useful in the management of data relating to tyres and wheels.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: June 16, 2020
    Assignee: LDL Technology
    Inventors: Manuel Bracq, Philippe Lefaure
  • Patent number: 10035389
    Abstract: A device (D), for clamping an electronic box (B) on a tyre rim (J), comprises an electronic box (B) of a pressure and/or temperature sensor, at least one flexible tie (200) making at least one loop around the rim (J) and at least one means for tensioning said flexible tie, remarkable in that said tensioning means comprises a lever (110) mounted so as to be able to pivot with respect to a plate (120) that comes into abutment on the rim (J), said lever (110) passing from a raised position to a position folded down against the plate (120), the raised position allowing mounting of the ends (210 and 220) and the folded-down position tensioning said flexible tie (200) for the purpose of fixing the box (B) to the rim.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: July 31, 2018
    Assignee: LDL TECHNOLOGY
    Inventor: Dominique Luce
  • Patent number: 9469168
    Abstract: The invention relates to a method of identifying sensors (C1, C2, C3, C4) of an information system for a vehicle (V1) of the type that links a plurality of sensors housed in the wheels and equipped with a subassembly for transmitting the collected data to a module (100) for transmitting and receiving said collected data, which is equipped with at least one transmission/reception antenna (110), in which each axle end is fitted with twin wheels, an inner wheel and an outer wheel, each wheel accommodating an equipped sensor (Ci or Ce) of a transmission subassembly, said method being noteworthy in that it consists in varying the power of the transmission antenna (110) in such a way that the transmission field of the antenna varies and includes or excludes the sensor(s) (Ci, Ce) located within its radius of action. The invention also relates to the device for implementing the method described above. Applications: detection and transmission of parameters from vehicle tires.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: October 18, 2016
    Assignee: LDL Technology
    Inventor: Philippe Lefaure
  • Patent number: 9415642
    Abstract: The invention relates to a method of replacing a defective sensor (100) of a surveillance system for monitoring in particular the pressure of the wheels of a vehicle (V) of the type of that comprising: wireless sensors (100) disposed in each wheel and a receiver; a unique identifier number being assigned to each sensor (100) thus making it possible for the receiver to identify the signal. This method is noteworthy in that it consists in: removing the defective sensor (100); identifying and logging the unique identifier number of the defective sensor (100); identifying and logging the communication protocol used on the vehicle; assigning said unique identifier number to a new virgin sensor (200, 200?) with neither assigned communication protocol nor assigned identifier number and simultaneously; programming the new sensor (200, 200?) so that it utilizes said communication protocol. The invention also relates to the device D and the sensor 200 making it possible to implement same.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: August 16, 2016
    Assignee: LDL Technology
    Inventors: Philippe Lefaure, Thierry Moreau
  • Patent number: 9235739
    Abstract: Disclosed is a communication device of a system for monitoring wheels of a vehicle (C), the wheels (R) being equipped with a tire comprising an electronic chip (200), the tire comprising a metal structure (S), remarkable in that it comprises an electronic module (110) housed in the wheel (R) of the vehicle (C), the electronic module (110) transmitting waves (O) over a frequency range established so as to enable the waves to be reflected on the metal structure (S), so that the waves (O) can reach the chip (200) whatever the position thereof with respect to the module (110) so that the module (110) can correspond with the chip (200) for the purposes of activation and/or transmission of data for writing and/or reading. Also disclosed is a communication method. Applications: monitoring of tires.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: January 12, 2016
    Assignee: LDL TECHNOLOGY
    Inventors: Manuel Bracq, Philippe Lefaure
  • Publication number: 20130061456
    Abstract: The invention relates to a method of replacing a defective sensor (100) of a surveillance system for monitoring in particular the pressure of the wheels of a vehicle (V) of the type of that comprising: wireless sensors (100) disposed in each wheel and a receiver; a unique identifier number being assigned to each sensor (100) thus making it possible for the receiver to identify the signal. This method is noteworthy in that it consists in: removing the defective sensor (100); identifying and logging the unique identifier number of the defective sensor (100); identifying and logging the communication protocol used on the vehicle; assigning said unique identifier number to a new virgin sensor (200, 200?) with neither assigned communication protocol nor assigned identifier number and simultaneously; programming the new sensor (200, 200?) so that it utilizes said communication protocol. The invention also relates to the device D and the sensor 200 making it possible to implement same.
    Type: Application
    Filed: November 19, 2010
    Publication date: March 14, 2013
    Applicant: LDL Technology
    Inventors: Philippe Lefaure, Thierry Moreau
  • Patent number: 8258931
    Abstract: The invention relates to a method of positioning sensors on wheels (200 and 300) installed coaxial to the same end of one and the same axle of a vehicle (C) comprising a receiving module (100) associated with the body of the vehicle, noteworthy in that it consists in positioning the sensors (210 and 310) at an angular interval greater than or equal to ninety (90) degrees of a wheel (200) relative to the other (300) so that, when operating in displacement mode, the distance between the receiving module and the sensor varies according to the wheel rotation, and in using a link of low frequency (LF) type so that the creation of a distance between the points of emission makes it possible to vary the power of the signals received, thus rendering them distinct. The invention also relates to a device making it possible to implement the method described hereinabove. Applications: measurement and transmission of data associated with the wheels of a vehicle.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: September 4, 2012
    Assignee: LDL Technology
    Inventor: Philippe Lefaure
  • Patent number: 8074508
    Abstract: The invention relates to a device (D) for fastening an electronic detection unit (100) for tires to a rim (J), this unit being of the type which is fastened to the valve (200), which valve comprises a part (210) outside the rim and a part (220) inside the rim, said device consisting of a connection module (300) connected on the one hand to the inner part (220) of the valve (200) and on the other hand to a preformed receptacle (400) for accommodating said electronic unit (100), distinguished in that said receptacle (400, 400a, 400b) forms an accommodation volume which is open on the tire tread side. Applications: detection unit fastened to the vehicle wheels.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: December 13, 2011
    Assignee: LDL Technology
    Inventor: Dominique Luce
  • Patent number: 7257998
    Abstract: An assembly (M) of a detection unit (100) for placement inside a tire with a rim having a connection aperture (210) is provided. The assembly (M) can include a detection unit (100) for receiving detection components, a valve body (300), a seal (400) for providing a seal between the valve body (300) and the rim (200), and fastener (500) for holding the valve body (300) in position on the rim (200). One or more of the detection unit (100), the valve body (300), the fastener (500) for holding the valve body (300), or a combination thereof, is preformed to penetrate the connection aperture (210) so as to engage the connection aperture (210) when the assembly (M) is subjected to tangential stresses.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: August 21, 2007
    Assignee: LDL Technology
    Inventor: Dominique Luce