Patents by Inventor John A. Sindt

John A. Sindt 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: 7573365
    Abstract: A system and method for a resistor for detecting the relative level of moisture content in a humid environment. The resistor has a first layer of conductive material on a top surface of a substrate having a bend. The conductive material is exposed to atmospheric conditions. The first layer of conductive material has a static condition moisture content and a measurable electrical resistance that changes predictably when the amount of moisture content in contact with the first layer of conductive material changes from the static condition. The change of resistance of the first layer of conductive material corresponds to a change in the moisture content in contact with the first layer of electrically conductive material.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: August 11, 2009
    Assignee: Sensitron, Inc.
    Inventors: David B. Beck, John A. Sindt, Thomas E. Danielson
  • Publication number: 20070273165
    Abstract: An impact detection system includes an impact surface mechanically associated with a vehicle and a detector mechanically associated with the impact surface. The impact surface, and hence the detector, is positioned to contact objects upon a relative movement of the vehicle with respect to the object. The detector has a deformable substrate that deflects upon the impact of the object; a resistance material deposited on the substrate, the resistance material having an electrical resistance that undergoes an ascertainable change upon deflection of the substrate from impact of the object; and conductor means connected to the resistance material to supply electrical power thereto and to transmit therefrom impact signals reflective of changes in the electrical resistance of the variable resistance material upon impact of the object with the impact surface. The impact signals can be used to determine if the object is a person or a hard object such as a pole and implement an appropriate response.
    Type: Application
    Filed: May 25, 2006
    Publication date: November 29, 2007
    Inventors: Dave Beck, Thomas Danielson, John A. Sindt
  • Patent number: 7277004
    Abstract: A system and method for a bi-directional deflectable resistor. The bi-directional deflectable resistor has a first layer of conductive material on a top surface of a substrate and a second layer of conductive material on a bottom surface of a substrate, each layer having a resistance that changes predictably when an electrical signal is applied thereto. The change of resistance of either the first layer of conductive material or the second layer of conductive material reflects an amount of deflection of the respective layer. Having two layers of conductive material allows for the measurement of deflection in all directions.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: October 2, 2007
    Assignee: Sensitron, Inc.
    Inventors: David B. Beck, John A. Sindt, Thomas E. Danielson
  • Patent number: 7248142
    Abstract: A system and method for a deflectable resistor. The deflectable resistor has a first layer of conductive material and a second layer of conductive material on a top surface of a substrate, said first layer of conductive material having a resistance that changes predictably. The change of resistance of the first layer of conductive material reflects an amount of deflection of the respective layer. A dielectric is placed over the first and second layers of conductive material. A third layer of conductive material is placed thereon. The dielectric material electrically insulates the first and second layers from the third layer.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: July 24, 2007
    Assignee: Sensitron, Inc.
    Inventors: David B. Beck, John A. Sindt, Thomas E. Danielson
  • Publication number: 20070132542
    Abstract: A system and method for a resistor for detecting the relative level of moisture content in a humid environment. The resistor has a first layer of conductive material on a top surface of a substrate having a bend. The conductive material is exposed to atmospheric conditions. The first layer of conductive material has a static condition moisture content and a measurable electrical resistance that changes predictably when the amount of moisture content in contact with the first layer of conductive material changes from the static condition. The change of resistance of the first layer of conductive material corresponds to a change in the moisture content in contact with the first layer of electrically conductive material.
    Type: Application
    Filed: December 12, 2005
    Publication date: June 14, 2007
    Inventors: David Beck, John Sindt, Thomas Danielson
  • Publication number: 20070030111
    Abstract: A system and method for a resistor for detecting the relative level of moisture content in a humid environment. The resistor has a first layer of conductive material on a top surface of a substrate having a bend. The conductive material is exposed to atmospheric conditions. The first layer of conductive material has a static condition moisture content and a measurable electrical resistance that changes predictably when the amount of moisture content in contact with the first layer of conductive material changes from the static condition. The change of resistance of the first layer of conductive material corresponds to a change in the moisture content in contact with the first layer of electrically conductive material.
    Type: Application
    Filed: August 2, 2005
    Publication date: February 8, 2007
    Inventors: David Beck, John Sindt, Thomas Danielson
  • Publication number: 20070030112
    Abstract: A system and method for a deflectable resistor. The deflectable resistor has a first layer of conductive material and a second layer of conductive material on a top surface of a substrate, said first layer of conductive material having a resistance that changes predictably. The change of resistance of the first layer of conductive material reflects an amount of deflection of the respective layer. A dielectric is placed over the first and second layers of conductive material. A third layer of conductive material is placed thereon. The dielectric material electrically insulates the first and second layers from the third layer.
    Type: Application
    Filed: August 2, 2005
    Publication date: February 8, 2007
    Inventors: David Beck, John Sindt, Thomas Danielson
  • Publication number: 20060238291
    Abstract: A system and method for a bi-directional deflectable resistor. The bi-directional deflectable resistor has a first layer of conductive material on a top surface of a substrate and a second layer of conductive material on a bottom surface of a substrate, each layer having a resistance that changes predictably when an electrical signal is applied thereto. The change of resistance of either the first layer of conductive material or the second layer of conductive material reflects an amount of deflection of the respective layer. Having two layers of conductive material allows for the measurement of deflection in all directions.
    Type: Application
    Filed: April 22, 2005
    Publication date: October 26, 2006
    Inventors: David Beck, John Sindt, Thomas Danielson