Patents by Inventor Robert B. Jeffers

Robert B. Jeffers 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).

  • Method and apparatus for detecting constituent changes in an environment
    Patent number: 8089367
    Abstract: An air monitoring apparatus includes, in an exemplary embodiment, a housing having at least one fluid passage to permit a fluid to enter the housing, and a constituent detection device positioned in the housing. The detection device includes at least one electrode, a power supply electrically coupled to the at least on electrode, and a logic circuit electrically coupled to the power supply. The logic circuit is configured to detect a change in at least one of impedance magnitude and a phase shift angle magnitude over a range of frequencies when the detection device contacts at least one fluid constituent contained in the fluid flowing into the cartridge through the at least one fluid passage, or when the detection device contacts at least one constituent in a solid whose chemical and/or material properties change as a function of fluid flowing into the housing through the at least one fluid passage.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: January 3, 2012
    Assignee: K & M Environmental, Inc.
    Inventors: Edward P. Locke, Thomas Clifford, Robert B. Jeffers, Julian E. Parker, III
  • METHOD AND APPARATUS FOR DETECTING CONSTITUENT CHANGES IN AN ENVIRONMENT
    Publication number: 20080238700
    Abstract: An air monitoring apparatus includes, in an exemplary embodiment, a housing having at least one fluid passage to permit a fluid to enter the housing, and a constituent detection device positioned in the housing. The detection device includes at least one electrode, a power supply electrically coupled to the at least on electrode, and a logic circuit electrically coupled to the power supply. The logic circuit is configured to detect a change in at least one of impedance magnitude and a phase shift angle magnitude over a range of frequencies when the detection device contacts at least one fluid constituent contained in the fluid flowing into the cartridge through the at least one fluid passage, or when the detection device contacts at least one constituent in a solid whose chemical and/or material properties change as a function of fluid flowing into the housing through the at least one fluid passage.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 2, 2008
    Inventors: Edward P. Locke, Thomas Clifford, Robert B. Jeffers, Julian E. Parker