Patents by Inventor Charles A. Cluff

Charles A. Cluff 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: 20080046147
    Abstract: A vehicle crash sensing system and method are provided for sensing a vehicle crash event. The system includes a linear acceleration sensor located on a vehicle for sensing linear acceleration along a first sensing axis and generating a linear acceleration signal. The system has linear crash sensing logic for determining a crash event along the first sensing axis as a function of the sensed linear acceleration. The system also has signal processing circuitry for processing the linear acceleration signal and generating a processed linear acceleration signal. The system has an angular rate sensor located on the vehicle for sensing an angular roll rate of the vehicle about a second sensing axis and generating a roll rate signal. The system further includes rollover crash sensing logic for determining a rollover event of the vehicle about the second sensing axis as a function of the processed linear acceleration signal and the roll rate signal.
    Type: Application
    Filed: June 29, 2006
    Publication date: February 21, 2008
    Inventors: Charles A. Cluff, Robert K. Constable, Brian M. Stavroff, Robert R. McConnell
  • Patent number: 7191269
    Abstract: The present invention provides a system of and a method for multiple transmitters to communicate data over a single uni-directional communication bus. In one form of the present invention, a data communication system using time-domain multiplexing includes a uni-directional current-modulated communication bus, a plurality of sensors coupled to the communication bus, at least one of the sensors capable of detecting the data transmission of a sensor outside of the current loop of the first sensor, the sensors also capable of transmitting data on the communication bus using current loop modulation. In another form of the present invention, a method of transmitting data on a uni-directional communication bus is provided.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: March 13, 2007
    Assignee: Delphi Technologies, Inc.
    Inventor: Charles A. Cluff
  • Publication number: 20060282202
    Abstract: A supplemental restraint deployment method utilizes measured vehicle speed and acceleration and the output of a closing velocity sensor that detects the presence and closing rate of an approaching object prior to contact with the vehicle. The closing velocity and vehicle speed are utilized for classification of an impending crash event, where the deployment options vary depending on the crash classification. In the ensuing crash event, a classification-dependent algorithm is executed to determine if, when and what level of restraint deployment is warranted based on measures of actual crash severity. Additionally, the algorithm is reset when the calculated change in vehicle velocity reaches the initial closing velocity.
    Type: Application
    Filed: June 9, 2005
    Publication date: December 14, 2006
    Inventors: Robert Cashler, Junqiang Shen, Walter Kosiak, Russell Simpson, Charles Cluff
  • Publication number: 20060184300
    Abstract: Impending rollover events are detected based on differential z-axis (i.e., vertical) acceleration. Vertical or z-axis acceleration measured at laterally opposite sides of the vehicle are filtered and differenced, and the differential acceleration is processed and compared to a calibrated threshold to detect impending rollover. Separate algorithms are employed to detect different categories of rollover events, and a sum of the z-axis acceleration measurements is used as a safing signal.
    Type: Application
    Filed: February 11, 2005
    Publication date: August 17, 2006
    Inventors: Peter Schubert, Charles Cluff, James Brogoitti, John Robertson, Gregory Manlove, David Rich
  • Publication number: 20050073403
    Abstract: The present invention provides a system of and a method for multiple transmitters to communicate data over a single uni-directional communication bus. In one form of the present invention, a data communication system using time-domain multiplexing includes a uni-directional current-modulated communication bus, a plurality of sensors coupled to the communication bus, at least one of the sensors capable of detecting the data transmission of a sensor outside of the current loop of the first sensor, the sensors also capable of transmitting data on the communication bus using current loop modulation. In another form of the present invention, a method of transmitting data on a uni-directional communication bus is provided.
    Type: Application
    Filed: July 30, 2004
    Publication date: April 7, 2005
    Inventor: Charles Cluff
  • Publication number: 20030120408
    Abstract: An occupant restraint deployment apparatus for a vehicle has a passenger compartment crash sensor and a plurality of satellite crash sensors, typically in vehicle crush zones. The satellite sensors are each responsive to local acceleration to generate a satellite deploy level signal having discrete values. The passenger compartment sensor is responsive to a passenger compartment (i.e. vehicle) acceleration to generate a passenger compartment deploy level signal and a passenger compartment safing signal. A multi-stage restraint in the passenger compartment is deployable by a control acting in three parallel modes, each requiring a deploy signal from one of the crash sensors based on full deploy requirements and a safing signal, typically based on lesser requirements, from a different one of the crash sensors. The three modes differ in which sensors provide each of the signals: (1) satellite deploy, passenger safe; (2) satellite deploy, different satellite safe; and (3) passenger deploy, satellite safe.
    Type: Application
    Filed: December 20, 2001
    Publication date: June 26, 2003
    Inventors: Christopher Michael Caruso, Charles A. Cluff, Russell L. Simpson, David L. Nelson, Christopher Brian Lagrave, Mary Jane Olsavsky
  • Patent number: 6584388
    Abstract: A vehicle rollover detection apparatus and method are provided for detecting an overturn condition of the vehicle. The rollover detection apparatus includes an angular rate sensor sensing angular rate of the vehicle, and a vertical accelerometer for sensing vertical acceleration of the vehicle. A controller processes the sensed angular rate signal and integrates it to produce an attitude angle. The vertical acceleration signal is processed to determine an inclination angle of the vehicle. The rollover detection apparatus adjusts the attitude angle as a function of the inclination angle and compares the adjusted attitude angle and the processed angular rate signal to a threshold level to provide a vehicle overturn condition output signal. Additionally, the rollover detection apparatus detects a near-rollover event and adjusts the variable threshold in response thereto to prevent deployment of a vehicle overturn condition, thus providing immunity to such events.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: June 24, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Peter J. Schubert, Charles A. Cluff
  • Publication number: 20030088349
    Abstract: A vehicle rollover detection apparatus and method are provided for detecting an overturn condition of the vehicle. The rollover detection apparatus includes an angular rate sensor sensing angular rate of the vehicle, and a vertical accelerometer for sensing vertical acceleration of the vehicle. A controller processes the sensed angular rate signal and integrates it to produce an attitude angle. The vertical acceleration signal is processed to determine an inclination angle of the vehicle. The rollover detection apparatus adjusts the attitude angle as a function of the inclination angle and compares the adjusted attitude angle and the processed angular rate signal to a threshold level to provide a vehicle overturn condition output signal. Additionally, the rollover detection apparatus detects a near-rollover event and adjusts the variable threshold in response thereto to prevent deployment of a vehicle overturn condition, thus providing immunity to such events.
    Type: Application
    Filed: November 8, 2001
    Publication date: May 8, 2003
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Peter J. Schubert, Charles A. Cluff
  • Patent number: 6559763
    Abstract: An improved vehicle crash sensing apparatus quickly and reliably characterizes frontal impacts with only minimal data processing requirements. Two or more longitudinally separated piezoelectric strips strategically located in a frontal portion of the vehicle produce impact signals that are analyzed to characterize the type of impact and the structural crush rate. In a simple implementation involving only two piezoelectric strips, a first strip extends laterally along a forward portion of the front bumper, and a second strip extends laterally along a forward portion of the hood panel, above and rearward of the first strip. In cases where an impact signal is developed by only one of the two strips, a high (under-ride) or low (over-ride) impact is indicated. If impact signals are developed by both strips, the intervening time is measured as an indication of the structural crush rate.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: May 6, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Morgan D. Murphy, Douglas Allen Nunan, Charles A. Cluff, David R. Little, Greston T. McCoy, Jr., Gary Eugene Oberlin
  • Publication number: 20020154006
    Abstract: An improved vehicle crash sensing apparatus quickly and reliably characterizes frontal impacts with only minimal data processing requirements. Two or more longitudinally separated piezoelectric strips strategically located in a frontal portion of the vehicle produce impact signals that are analyzed to characterize the type of impact and the structural crush rate. In a simple implementation involving only two piezoelectric strips, a first strip extends laterally along a forward portion of the front bumper, and a second strip extends laterally along a forward portion of the hood panel, above and rearward of the first strip. In cases where an impact signal is developed by only one of the two strips, a high (under-ride) or low (over-ride) impact is indicated. If impact signals are developed by both strips, the intervening time is measured as an indication of the structural crush rate.
    Type: Application
    Filed: April 23, 2001
    Publication date: October 24, 2002
    Applicant: Delphi Technologies, Inc.
    Inventors: Morgan D. Murphy, Douglas Allen Nunan, Charles A. Cluff, David R. Little, Greston T. McCoy, Gary Eugene Oberlin
  • Patent number: 5954775
    Abstract: An automotive supplemental inflatable restrain system has the ability to sense the presence of an occupant or the position of an infant seat and send that information to a control circuit at a low message rate, and to sense occupant position and send that data at a high rate. A protocol defines a low rate message interval large enough to contain a complete position message at high rate and still have room to transmit a logic state which is just one fragment of the low rate message, so that a plurality of message intervals will comprise one low rate message and many high rate messages.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: September 21, 1999
    Assignee: Delco Electronics Corp.
    Inventor: Charles A. Cluff