Patents by Inventor Todd H. Sellman

Todd H. Sellman 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).

  • Tamper resistant vapor sensor method and system
    Patent number: 6883366
    Abstract: A vapor sensor is disclosed, which includes a substrate containing a sensing element, wherein the substrate is located proximate to a sleeve portion which covers and protects the sensing element. The vapor sensor also includes a vapor filter or permeable membrane affixed to an end of the sleeve portion, wherein the end of the sleeve portion is located opposite the sensing element. A housing and a cover are also provided, such that the housing retains the substrate and the cover snaps onto the housing. The housing itself includes walls from which a hole is formed through which vapors may pass. The vapor sensor can be mounted to a gas water heater in such a manner as to reduce air flow to the sensing element and prevent tampering of the vapor sensor unit itself.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: April 26, 2005
    Assignee: Honeywell International Inc.
    Inventors: Richard W. Gehman, Todd H. Sellman, Richard C. Cholke, Michael R. Hoefer