Patents by Inventor David M. Kennedy

David M. Kennedy 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: 11982240
    Abstract: An internal combustion engine assembly comprising a fuel reformer, a combustion chamber and a controller. The fuel reformer comprises a first channel and a second channel, a portion of the second channel being adjacent to a portion of the first channel to facilitate heat exchange between the first and second channels. The first channel comprises a catalyst selected to reform ammonia to hydrogen and nitrogen. The first channel is configured to receive ammonia, pass the ammonia over the catalyst and output a first mixture comprising ammonia, hydrogen and nitrogen. The composition of the first mixture depends on a first reformer temperature of the first channel. The combustion chamber is configured to receive the first mixture from the fuel reformer; to receive an oxidant; to combust the first mixture in the oxidant to produce heat and a first product; and to output the first product. The second channel of the fuel reformer is configured to receive the first product.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: May 14, 2024
    Assignee: Perkins Engines Company Limited
    Inventors: David M. Heaton, Mark J. Kennedy
  • Patent number: 4843723
    Abstract: A gauge for determining the proper formation of an annular recess formed at the bottom of a blind bore in the body of a hydraulic lash adjuster. A shaft having a tapered end is mounted in a block and an expandable, cylindrical gauging member is received over the tapered portion. A cylindrical sleeve is received over the shaft and is biased into engagement with the gauging member by springs acting between the block and the sleeve. When this assembly is inserted into the lash adjuster body and the gauging member contacts the bottom of the bore, continued axial movement of the shaft causes the gauging member to expand into the recess as the tapered portion of the shaft moves through the gauging member. Measurement of the amount of movement of the shaft provides an indication of the radial movement of the gauging element by virtue of the tapered interconnection.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: July 4, 1989
    Assignee: Eaton Corporation
    Inventors: Erwin F. Hentschel, John G. Fahrenbruch, David M. Kennedy
  • Patent number: 4604569
    Abstract: A multimeter is provided with two slide switches, one switch providing a selection of four functions, i.e. "OFF", "AC", "DC/JUNCTION" and "RESISTANCE/CONTINUITY" and the other switch providing a selection of six range settings and a "JUNCTION/CONTINUITY" setting. The multimeter also has three input sockets for insertion of test leads. At least two of the combinations of the switches and sockets are incompatible, i.e. "AC" and "JUNCTION/CONTINUITY", and a current input socket and "RESISTANCE/CONTINUITY". An internal buzzer is incorporated in the multimeter to provide an audible indication to a user that an incompatible combination has been selected. The buzzer is preferably also used in junction and continuity test modes.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: August 5, 1986
    Assignee: Thorn EMI Instruments Limited
    Inventors: David C. Tedd, David M. Kennedy