Patents Assigned to Lansense, LLC
  • Method and apparatus for sensing and measuring plural physical properties, including temperature
    Patent number: 6639506
    Abstract: A method and device, employing positive-temperature-coefficient material, for sensing plural properties of a fluid, such as temperature and flow rate. Can be used in a wind gauge or in a device for sensing position of mechanical elements such as valve diaphragms. Single sensor device, with energy and ohmic resistors, produces two voltages which completely characterize temperature and flow rate of fluid under study.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: October 28, 2003
    Assignee: Lansense, LLC
    Inventor: Donald G. Landis
  • Sensing and measuring circuit employing a positive-temperature-coefficient sensing device
    Patent number: 6559771
    Abstract: A sensing and measuring circuit, employing a positive-temperature-coefficient sensing device, for detecting the presence and approximately measuring the quantity or concentration of heat-absorptive substances such as water. May be used for sensing a quantity of rainfall or irrigation water, or for detecting and giving an alarm or initiating remediation for leakage of water, oil, or other fluids from confinement to an unauthorized location.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: May 6, 2003
    Assignee: Lansense, LLC
    Inventor: Donald G. Landis
  • Sensing and switching circuit employing a positive-temperature-coefficient sensing device
    Patent number: 6549136
    Abstract: A sensor and associated circuitry for sensing and reacting to the presence of a fluid or other material having heat capacity. A positive-temperature-coefficient device initiates a switching step when the amount of heat-capacity material reaches a certain level, or is totally absent. The switching step may trigger an alarm or control circuit to rectify the fluid level.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: April 15, 2003
    Assignee: Lansense, LLC
    Inventor: Donald G. Landis
  • SENSING AND SWITCHING CIRCUIT EMPLOYING A POSITIVE-TEMPERATURE-COEFFICIENT SENSING DEVICE
    Publication number: 20030048190
    Abstract: A sensor and associated circuitry for sensing and reacting to the presence of a fluid or other material having heat capacity. A positive-temperature-coefficient device initiates a switching step when the amount of heat-capacity material reaches a certain level, or is totally absent. The switching step may trigger an alarm or control circuit to rectify the fluid level.
    Type: Application
    Filed: September 13, 2001
    Publication date: March 13, 2003
    Applicant: LANSENSE, LLC
    Inventors: Donald G. Landis, Sally A. Landis
  • SENSING AND MEASURING CIRCUIT EMPLOYING A POSITIVE-TEMPERATURE-COEFFICIENT SENSING DEVICE
    Publication number: 20030048189
    Abstract: A sensing and measuring circuit, employing a positive-temperature-coefficient sensing device, for detecting the presence and approximately measuring the quantity or concentration of heat-absorptive substances such as water. May be used for sensing a quantity of rainfall or irrigation water, or for detecting and giving an alarm or initiating remediation for leakage of water, oil, or other fluids from confinement to an unauthorized location.
    Type: Application
    Filed: September 12, 2001
    Publication date: March 13, 2003
    Applicant: LANSENSE, LLC
    Inventors: Sally A. Landis, Donald G. Landis
  • Method and apparatus for sensing and measuring plural physical properties, including temperature
    Patent number: 6411192
    Abstract: A method and device, employing positive-temperature-coefficient material, for sensing plural properties of a fluid, such as temperature and flow rate. Can be used in a wind gauge or in a device for sensing position of mechanical elements such as valve diaphragms. Single sensor device, with energy and ohmic resistors, produces two voltages which completely characterize temperature and flow rate of fluid under study.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: June 25, 2002
    Assignee: Lansense, LLC
    Inventor: Donald G. Landis
  • Effluent-gas-scavenger system for process tube, minimizing back diffusion and atmospheric contamination
    Patent number: 5860805
    Abstract: A dual-function scavenger system, especially useful in conjunction with ovens for processing semiconductor materials, wherein the spent process gases from the ovens are separated from their residual thermal energy for disposition through discrete channels. Back diffusion of atmospheric air into the ovens is minimized.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: January 19, 1999
    Assignee: Lansense, LLC
    Inventor: Donald G. Landis