Patents by Inventor Ralf Kessler

Ralf Kessler 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).

  • Publication number: 20250172802
    Abstract: In view of the problem of specifying a device for scanning an eye or a part of an eye, the device having a scanning angle that can be adjusted as variably as possible and by means of which images of the highest possible quality are creatable at the fastest possible speed, an apparatus for scanning an eye (1) comprising a scanning device (2) with a reflection surface (3), onto which at least one incident light beam (4a, 4b) is deflectable, with a light beam (5a, 5b) reflected toward the incident light beam (4a, 4b) by the reflection surface (3) being pivotable over an angular range (6a, 6b) by means of the scanning device (2), is characterized in that means are provided, by means of which at least two spaced apart, incident light beams (4a, 4b) are deflectable onto the reflection surface (3) such that at least two reflected light beams (5a, 5b) are pivotable over an angular range (6a, 6b) in each case.
    Type: Application
    Filed: November 17, 2022
    Publication date: May 29, 2025
    Applicant: Heidelberg Engineering Gmbh
    Inventors: Christoph BROSCHE, Jörg FISCHER, Ralf KESSLER
  • Patent number: 10442255
    Abstract: A method for assigning identifiers of wheel electronics to the positions of the wheels on the vehicle is disclosed. The wheel electronics send their individual identifier with information relating to the rotational direction of the wheel and to the occurrence of an impact on the wheel to a receiver. An evaluation unit: collects the identifiers and rotational direction information and the driving speed, and on this basis, differentiates between identifiers of wheel electronics on the left and right vehicle side; differentiates impacts reported from wheel electronics on the left vehicle side, from impacts reported from wheel electronics on the right vehicle side; measures the time between impact signals reported from wheel electronics on the left or on the right vehicle side; multiplies the measured time by the driving speed measuring during this time; and checks whether the length formed by the multiplication coincides with an axle distance.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: October 15, 2019
    Assignee: HUF BAOLONG ELECTRONICS BRETTEN GMBH
    Inventors: Markus Alexander, Ralf Kessler, Markus Wagner
  • Publication number: 20180201075
    Abstract: A method for assigning identifiers of wheel electronics to the positions of the wheels on the vehicle is disclosed. The wheel electronics send their individual identifier with information relating to the rotational direction of the wheel and to the occurrence of an impact on the wheel to a receiver. An evaluation unit: collects the identifiers and rotational direction information and the driving speed, and on this basis, differentiates between identifiers of wheel electronics on the left and right vehicle side; differentiates impacts reported from wheel electronics on the left vehicle side, from impacts reported from wheel electronics on the right vehicle side; measures the time between impact signals reported from wheel electronics on the left or on the right vehicle side; multiplies the measured time by the driving speed measuring during this time; and checks whether the length formed by the multiplication coincides with an axle distance.
    Type: Application
    Filed: March 14, 2018
    Publication date: July 19, 2018
    Inventors: Markus Alexander, Ralf Kessler, Markus Wagner
  • Patent number: 9908374
    Abstract: A tire module for attachment to an inside of a pneumatic tire for vehicles includes a device for measuring and/or monitoring the air pressure in the tire. A transmitter for transmitting radio signals, which contains information regarding the air pressure in the tire, includes a mechanical-electrical transducer having a flexible piezo-electrical element, which converts alternating changes in shape of the piezo-electric element caused by the rolling tire into electric energy and includes a storage unit for the electric energy, which is connected to the transducer. The transducer may contain a circular, disc-like, piezo-electric element, which in the following is described as piezo disc and on which an electrical voltage generated through the piezo effect is tapped off on contact points which are located on opposite sides of the piezo disc.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: March 6, 2018
    Assignee: HUF HÜLSBECK & FÜRST GMBH & CO. KG
    Inventors: Axel Dussinger, Ralf Kessler, Ingemar Wolf, Andre Seifert, Benjamin Mueller
  • Patent number: 9783014
    Abstract: A device for measuring the tire pressure in a wheel of a vehicle provided with a pneumatic tire is accommodated in a shell-shaped housing which is arranged at the valve base of a tire valve. Provision is made that there is only a single location on the housing by which the housing can rest on the rim well of a rim of the wheel.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: October 10, 2017
    Assignee: HUF HÜLSBECK & FÜRST GMBH & CO. KG
    Inventors: Sven Arnoldo, Ralf Kessler, Andre Seifert
  • Patent number: 9296265
    Abstract: A tire pressure monitoring device is equipped for attaching to a wheel of a vehicle provided with pneumatic tires. The device measures the tire air pressure present in the pneumatic tire or a change of the tire pressure. An electrical circuit controls the tire pressure monitoring device. A memory stores a program for the electrical circuit. A first transmitter operates in a first frequency range for transmitting data out of the tire pressure monitoring device to a first receiver located outside the tire pressure monitoring device. In the memory initially a basic version of the program is stored, out of which multiple different versions of the program for multiple vehicle types can be developed. Subsequently, a fitting full version for a selected vehicle type is created in that program parameters intended for the selected vehicle type are subsequently stored in the memory of the tire pressure monitoring device.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: March 29, 2016
    Assignee: Huf Hülsbeck & Fürst GmbH & Co. KG
    Inventors: Ralf Kessler, Markus Wagner, Axel Dussinger, Benjamin Mueller, Roland Hofmann
  • Publication number: 20150210126
    Abstract: A device for measuring the tire pressure in a wheel of a vehicle provided with a pneumatic tire is accommodated in a shell-shaped housing which is arranged at the valve base of a tire valve. Provision is made that there is only a single location on the housing by which the housing can rest on the rim well of a rim of the wheel.
    Type: Application
    Filed: March 16, 2015
    Publication date: July 30, 2015
    Inventors: Sven Arnoldo, Ralf Kessler, Andre Seifert
  • Publication number: 20150202932
    Abstract: A tire pressure monitoring device is equipped for attaching to a wheel of a vehicle provided with pneumatic tires. The device measures the tire air pressure present in the pneumatic tire or a change of the tire pressure. An electrical circuit controls the tire pressure monitoring device. A memory stores a program for the electrical circuit. A first transmitter operates in a first frequency range for transmitting data out of the tire pressure monitoring device to a first receiver located outside the tire pressure monitoring device. In the memory initially a basic version of the program is stored, out of which multiple different versions of the program for multiple vehicle types can be developed. Subsequently, a fitting full version for a selected vehicle type is created in that program parameters intended for the selected vehicle type are subsequently stored in the memory of the tire pressure monitoring device.
    Type: Application
    Filed: December 9, 2014
    Publication date: July 23, 2015
    Inventors: Ralf Kessler, Markus Wagner, Axel Dussinger, Benjamin Mueller, Roland Hofmann
  • Publication number: 20150020585
    Abstract: A tire module for attachment to an inside of a pneumatic tire for vehicles includes a device for measuring and/or monitoring the air pressure in the tire. A transmitter for transmitting radio signals, which contains information regarding the air pressure in the tire, includes a mechanical-electrical transducer having a flexible piezo-electrical element, which converts alternating changes in shape of the piezo-electric element caused by the rolling tire into electric energy and includes a storage unit for the electric energy, which is connected to the transducer. The transducer may contain a circular, disc-like, piezo-electric element, which in the following is described as piezo disc and on which an electrical voltage generated through the piezo effect is tapped off on contact points which are located on opposite sides of the piezo disc.
    Type: Application
    Filed: October 8, 2014
    Publication date: January 22, 2015
    Inventors: Axel Dussinger, Ralf Kessler, Ingemar Wolf, Andre Seifert, Benjamin Mueller
  • Patent number: 8791807
    Abstract: Allocates identifiers of units of a tire pressure monitoring system to the positions of ABS-sensors which are each assigned to the wheels of the vehicle. The identifiers are contained in signals that are emitted by the units. Each unit, which is called a wheel electronic, has a pressure sensor, which is sensitive to the tire pressure of the wheel, a motion sensor, which provides information on the rotation speed of the wheel, a memory with the individual identifier of the wheel stored therein, and a transmitter, which transmits signals only containing information on the rotation speed of the respective wheel, to a receiver. An evaluation device receives the transmitted identifier and compares the information on the rotation speed of the wheel transmitted along with the identifier, with rotation speed information, which were acquired by the ABS sensors for the same time span and transferred to the evaluation device.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: July 29, 2014
    Assignee: Huf Huelsbeck & Fuerst GmbH & Co, KG
    Inventors: Ralf Kessler, Andreas Kraft, Markus Wagner, Jürgen Schönbeck, Peter Brand
  • Patent number: 8760277
    Abstract: Method for allocating identification codes which are contained in signals transmitted by components of a tire pressure monitoring system, said components being attached to wheels of the vehicle, to the wheel positions. A plurality of sensors to the tire pressure, to the rolling direction of the wheel, to the shocks, as well as a memory for the identification code, and a transmitter which supplies signals with the identification code, the rolling direction and the occurrence of a shock on a wheel to a receiver which, based on the supplied rolling direction information, distinguishes identification codes pertaining to wheels on the left-hand or right-hand side of the vehicle from shocks which occur on the left-hand or right-hand side of the vehicle, measures the time interval elapsing between shock signals on one side of the vehicle, multiplies this time interval by the velocity of the vehicle measured within the same time interval.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: June 24, 2014
    Inventors: Ralf Kessler, Markus Wagner, Andreas Kraft, Jürgen Schönbeck, Peter Brand, Markus Adrian Alexander
  • Patent number: 8600607
    Abstract: The invention describes a method for allocating identifiers of wheel electronics of a tire pressure monitoring system to positions of wheels of a vehicle, the simultaneously occurring rotation speeds of the wheels, normalized on a consistently chosen rolling radius of the wheels differ during cornering because of the different positions of the wheels on the vehicle, so that the positions of the wheels can be sorted according to increasing speed of the wheels during cornering, the wheel electronics of each wheel comprising a pressure sensor, a motion sensor, a memory and a transmitter, which transmits signals to a receiver being connected to an evaluation device, which receives the transmitted identifiers and compares the distances which the corresponding wheels have traveled in a defined time span, sorts the identifiers according to the length of the distance traveled in the defined time span and allocates the identifiers to the wheel positions.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: December 3, 2013
    Assignee: Huf Huelsbeck & Fuerst GmbH & Co. KG
    Inventors: Ralf Kessler, Andreas Kraft, Markus Wagner, Juergen Schoenbeck, Peter Brand
  • Patent number: 8578767
    Abstract: A tire module, for installation on an inner side of a pneumatic tire for vehicles, including a device for measuring and/or monitoring of the air pressure in the tire, a transmitter for transmitting radio signals, which contain information about the air pressure in the tire, a mechanical-electrical converter having a bendable piezoelectric element, which converts into electric energy alternating deformations of the piezoelectric element caused by the rolling tire, and a storage device for the electric energy, which is connected to the converter. The converter includes a circular, disc-shaped, piezoelectric element (piezo disc) on which an electrical voltage generated by the piezo effect is tapped at contact points, which are situated on opposite sides of the piezo disc.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: November 12, 2013
    Assignee: BorgWarner BERU Systems GmbH
    Inventors: Axel Dussinger, Ralf Kessler, Benjamin Mueller, Andre Seifert, Ingemar Wolf
  • Publication number: 20120194333
    Abstract: Method for allocating identification codes which are contained in signals transmitted by components of a tire pressure monitoring system, said components being attached to wheels of the vehicle, to the wheel positions. A plurality of sensors to the tire pressure, to the rolling direction of the wheel, to the shocks, as well as a memory for the identification code, and a transmitter which supplies signals with the identification code, the rolling direction and the occurrence of a shock on a wheel to a receiver which, based on the supplied rolling direction information, distinguishes identification codes pertaining to wheels on the left-hand or right-hand side of the vehicle from shocks which occur on the left-hand or right-hand side of the vehicle, measures the time interval elapsing between shock signals on one side of the vehicle, multiplies this time interval by the velocity of the vehicle measured within the same time interval.
    Type: Application
    Filed: January 26, 2012
    Publication date: August 2, 2012
    Applicant: BorgWarner BERU Systems GmbH
    Inventors: Ralf Kessler, Markus Wagner, Andreas Kraft, Jürgen Schoenbeck, Peter Brand
  • Patent number: 8198993
    Abstract: Described is a procedure for controlling the transmission operation of a tire pressure monitoring device (1) arranged in a pneumatic tire of a vehicle, whereby data telegrams are transmitted in a normal mode of operation (13) in first time intervals, and there is a changeover from the normal mode of operation (13) to a pressure drop mode, if an inspection of the pressure signals indicates a drop in the pressure of a drop speed exceeding a pre-defined threshold value, and data telegrams are transmitted in the pressure drop mode in second time intervals, which are shorter than the first time intervals, and the tire pressure monitoring devices (1) are put into a travel starting mode (10, 11, 12) at the beginning of the travel by activation a roll sensor. Data telegrams are transmitted in the travel starting mode in shorter third time intervals as compared to the normal mode of operation.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: June 12, 2012
    Assignee: BERU Aktiengesellschaft
    Inventors: Ralf Kessler, Holger Köninger, Karsten Sandrock
  • Publication number: 20120085160
    Abstract: A tire module, for installation on an inner side of a pneumatic tire for vehicles, including a device for measuring and/or monitoring of the air pressure in the tire, a transmitter for transmitting radio signals, which contain information about the air pressure in the tire, a mechanical-electrical converter having a bendable piezoelectric element, which converts into electric energy alternating deformations of the piezoelectric element caused by the rolling tire, and a storage device for the electric energy, which is connected to the converter. The converter includes a circular, disc-shaped, piezoelectric element (piezo disc) on which an electrical voltage generated by the piezo effect is tapped at contact points, which are situated on opposite sides of the piezo disc.
    Type: Application
    Filed: October 10, 2011
    Publication date: April 12, 2012
    Inventors: Axel DUSSINGER, Ralf KESSLER, Benjamin MUELLER, Andre SEIFERT, Ingemar WOLF
  • Publication number: 20120060598
    Abstract: Allocates identifiers of units of a tire pressure monitoring system to the positions of ABS-sensors which are each assigned to the wheels of the vehicle. The identifiers are contained in signals that are emitted by the units. Each unit, which is called a wheel electronic, has a pressure sensor, which is sensitive to the tire pressure of the wheel, a motion sensor, which provides information on the rotation speed of the wheel, a memory with the individual identifier of the wheel stored therein, and a transmitter, which transmits signals only containing information on the rotation speed of the respective wheel, to a receiver. An evaluation device receives the transmitted identifier and compares the information on the rotation speed of the wheel transmitted along with the identifier, with rotation speed information, which were acquired by the ABS sensors for the same time span and transferred to the evaluation device.
    Type: Application
    Filed: August 4, 2011
    Publication date: March 15, 2012
    Applicant: BorgWarner BERU Systems GmbH
    Inventors: Ralf KESSLER, Andreas KRAFT, Markus WAGNER, Jürgen SCHÖNBECK, Peter BRAND
  • Publication number: 20120065832
    Abstract: The invention describes a method for allocating identifiers of wheel electronics of a tire pressure monitoring system to positions of wheels of a vehicle, the simultaneously occurring rotation speeds of the wheels, normalized on a consistently chosen rolling radius of the wheels differ during cornering because of the different positions of the wheels on the vehicle, so that the positions of the wheels can be sorted according to increasing speed of the wheels during cornering, the wheel electronics of each wheel comprising a pressure sensor, a motion sensor, a memory and a transmitter, which transmits signals to a receiver being connected to an evaluation device, which receives the transmitted identifiers and compares the distances which the corresponding wheels have traveled in a defined time span, sorts the identifiers according to the length of the distance traveled in the defined time span and allocates the identifiers to the wheel positions.
    Type: Application
    Filed: September 9, 2011
    Publication date: March 15, 2012
    Inventors: Ralf Kessler, Andreas Kraft, Markus Wagner, Juergen Schoenbeck, Peter Brand
  • Publication number: 20100052886
    Abstract: Described is a procedure for controlling the transmission operation of a tire pressure monitoring device (1) arranged in a pneumatic tire of a vehicle, whereby data telegrams are transmitted in a normal mode of operation (13) in first time intervals, and there is a changeover from the normal mode of operation (13) to a pressure drop mode, if an inspection of the pressure signals indicates a drop in the pressure of a drop speed exceeding a pre-defined threshold value, and data telegrams are transmitted in the pressure drop mode in second time intervals, which are shorter than the first time intervals, and the tire pressure monitoring devices (1) are put into a travel starting mode (10, 11, 12) at the beginning of the travel by activation a roll sensor. Data telegrams are transmitted in the travel starting mode in shorter third time intervals as compared to the normal mode of operation.
    Type: Application
    Filed: September 2, 2009
    Publication date: March 4, 2010
    Inventors: Ralf Kessler, Holger Kõninger, Karsten Sandrock
  • Patent number: 7662147
    Abstract: A device and method for steering a laser beam to a focal point in target tissue requires generating a laser beam. Diversions of the laser beam from a central beam path are minimized by a sequential arrangement of optical steering components. In order, the beam is first directed to the center of a z-scanning apparatus which will move the focal point in the medium in a z-direction. The beam is then passed to the center of a first galvanometric mirror which introduces focal point movements in the x-direction. A second galvanometric mirror then compensates for the x-direction movement by redirecting the beam to the center of a third galvanometric mirror where focal point movements in the y-direction are introduced.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: February 16, 2010
    Assignee: Technolas PerfectVision GmbH
    Inventors: Ralf Kessler, Frieder Loesel, Thomas Sauter