Patents by Inventor John R. Engle

John R. Engle 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: 10473548
    Abstract: A device for detecting presence of a fluid is described, and includes a resistive sensing element including a first conductive element proximal to a second conductive element, wherein the first conductive element is electrically isolated from the second conductive element, and a controller disposed to monitor electrical conductivity between the first conductive element and the second conductive element. The controller includes an instruction set that is executable to periodically monitor a signal associated with the electrical conductivity between the first conductive element and the second conductive element. A baseline value for the electrical conductivity between the first conductive element and the second conductive element can be determined based upon the periodically monitored signal, and a signal waveform can be determined based upon the periodically monitored signal. The signal waveform can be characterized, and presence of a fluid can be detected based upon the characterized waveform.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: November 12, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Philip S. Jack, Douglas R. Drauch, John M. Thornton, Philip Wolschendorf, Joshua L. Engle, Derek M. Arrotta
  • Patent number: 5482033
    Abstract: An anesthesia waste gas evacuation system having a waste gas collection chamber with an inlet into the chamber at the bottom and a blower at the top for blowing gas from the chamber to an outlet connected to a building ventilation system. Vents are provided to provide communication between the chamber interior and the surrounding atmosphere so that the pressure within the chamber remains substantially at atmospheric pressure avoiding the formation of a sub-ambient pressure within the chamber. The chamber is electrically grounded and is electrically connected to a standpost so as to ground the post as well.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: January 9, 1996
    Inventors: John R. Engle, Jeff Baker
  • Patent number: 4772048
    Abstract: A multiple ply document for receiving recording information including a top ply having a machine readable code printed thereon, a bottom ply secured by means of a line of adhesive to the top ply adjacent one edge thereof, a line of weakening in the top ply distal from the line of adhesive to permit removal of a portion of the first ply, and at least one middle ply extending to a position adjacent the line of weakening and secured to the bottom ply by means of a line of adhesive adjacent the line of weakening.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: September 20, 1988
    Assignee: NCR Corporation
    Inventors: John R. Engle, Donald B. Shenberger
  • Patent number: 4772049
    Abstract: A multiple ply document for receiving recording information includes a top ply having a machine readable code printed thereon, one or more intermediate plies and a bottom ply secured together by means of a line of adhesive along one edge thereof. The top and intermediate plies are secured to respective overlying and underlying plies by means of staggered lines of adhesive to secure the piles at another area of the document. The top and intermediate plies also each include a line of weakening slightly below the respective line of adhesive to permit removal of a portion of the first ply and of the middle plies and leaving an upper portion of the top and intermediate plies on the document.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: September 20, 1988
    Assignee: NCR Corporation
    Inventor: John R. Engle