Patents by Inventor Stefano Re Fiorentin

Stefano Re Fiorentin 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: 5978728
    Abstract: The method includes the steps of generating a detonation signal related to the intensity of the vibration on an engine block; wide-band filtering the detonation signal; rectifying the filtered detonation signal; integrating the rectified signal; calculating the logarithm of the integration result; calculating a mean value as a function of the calculated logarithm; calculating the values of a first and second standard-deviation-related quantity as a function of the logarithm value and the mean value; and calculating a detonation coefficient value as a function of the values of the standard-deviation-related quantities.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: November 2, 1999
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Roberto Fontana, Gianluca Morra, Stefano Re Fiorentin
  • Patent number: 5929756
    Abstract: The method of detecting a partially deflated tire includes the steps of detecting the angular velocity of each wheel and generating corresponding velocity signals or data, processing the velocity signals or data in a processing unit arranged for calculating the value of a predetermined function of the ratio or of the difference between the product of the angular velocities of two diagonally opposed wheels and the product of the angular velocities of the other two wheels, and generating a warning signal when the difference between the values of this function and a first static reference value corresponding to a normal inflation condition of the tires exceeds a predetermined value, or when the difference between the values of this function and a second reference value determined upon each departure of the motor vehicle and corresponding to the actual inflation condition of the tires upon departure of the motor vehicle exceeds a predetermined value.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: July 27, 1999
    Assignee: Fiat Auto S.p.A.
    Inventors: Cristina Randazzo, Stefano Re Fiorentin, Fulvio Cascio
  • Patent number: 5343206
    Abstract: The method for avoiding collision between a motor vehicle and obstacles placed in the path of the vehicle comprises the stages of forming a radar map of the area in front of the vehicle, reconstructing the geometry of the road, identifying its edges, detecting the position and speed of the vehicle with respect to the road, determining the presumed path of the vehicle on the basis of the road geometry and the manoeuvre being carried out by the vehicle at that instant, detecting objects on the radar map found lying in the presumed path of the motor vehicle and displaying the map found in a perspective representation, ignoring objects which are off the road and indicating objects in the path of the vehicle in a different manner according to their hazard and if appropriate generating alarms of an acoustic type.
    Type: Grant
    Filed: January 6, 1993
    Date of Patent: August 30, 1994
    Assignee: Fiat Auto S.p.A.
    Inventors: Ermanno Ansaldi, Stefano Re Fiorentin, Andrea Saroldi
  • Patent number: 4935727
    Abstract: A device for measuring the quantity of light in a tank is disclosed, including three level sensors housed within a tank in a predetermined relative position. Alternative processors are disclosed for processing information supplied by the level sensor, wherein the information depends on the liquid level sensed by each of the sensors. An indicator, controlled by the processor, indicates the quantity of liquid contained in the tank.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: June 19, 1990
    Assignee: Fiat Auto S.p.A.
    Inventors: Stefano Re Fiorentin, Piero Tonello
  • Patent number: 4887025
    Abstract: A electrical current of predetermined strength is passed through a spot weld by a first pair of electrodes. The electrical potential difference between two points, respectively upstream and downstream of the spot weld along the current path, is measured with a second pair of electrodes. In particular, this second pair of electrodes is used to carry out at least one first measurement before the application of the current, and at least one second measurement during the application of the current. These measurements are carried out at two instants separated by a time interval equal to or a whole multiple of the period of the main power voltage. The difference between the values measured in the first and second measurements provides an indication of the quality of the spot weld.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: December 12, 1989
    Assignee: Fiat Auto S.p.A.
    Inventors: Stefano Re Fiorentin, Renzo Gaudenzi
  • Patent number: 4620799
    Abstract: A method is described for the non-destructive testing of a joint obtained by the electrical spot-welding of two sheets of substantially the same material joined together in a local zone with the formation of a weld core which has a thermal diffusivity substantially different from the thermal diffusivity of the material of the two sheets before welding, such a core being obtained only when the welding is of a good quality.The testing is effected by a device the main characteristic of which is an electrode which delivers heat and a detector electrode located at two conveniently chosen points on one surface or opposite surfaces of the two welded sheets. The detector electrode is connected through an amplifier and an analog-digital converter to a computer which processes the signal to provide an indication of the weld quality on the basis of the measured value of the thermal diffusivity.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: November 4, 1986
    Assignee: Fiat Auto S.p.A.
    Inventors: Mario Palazzetti, Stefano Re Fiorentin, Giovanni Tufano
  • Patent number: 4475406
    Abstract: An ultrasonic device for measuring the delivery of fluid through a conduit. A pair of electroacoustic transducers are arranged in the wall of the pipe forming the conduit in a mutually confronting relationship along an axis inclined relative to the conduit axis. Each transducer is able to convert an electric signal of predetermined frequency into an ultrasonic wave which propagates through the fluid toward the confronting transducer. After a predetermined interval of transmission, each transducer receives the transmitted wave and converts it to an electric signal. A collimator is disposed in the path of the fluid upstream of the transducers. An oscillator outputs electrical signals of predetermined frequency to the transducers.
    Type: Grant
    Filed: July 8, 1982
    Date of Patent: October 9, 1984
    Assignee: Centro Ricerche Fiat S.p.A.
    Inventors: Ermanno Ansaldi, Stefano Re Fiorentin
  • Patent number: 4364264
    Abstract: A feeler device for measuring the degree of roughness of an uneven surface being examined, the device comprising a transmitting transducer arranged to convert an electrical signal of a predetermined frequency into an ultrasonic wave propagated through a liquid coupling medium and having a wave length of the same order of magnitude as the uneven surface being examined, a generator being provided to generate and feed the electric signal to the transmitting transducer.
    Type: Grant
    Filed: December 31, 1980
    Date of Patent: December 21, 1982
    Assignee: Centro Ricerche Fiat S.p.A.
    Inventor: Stefano Re Fiorentin