Patents by Inventor Robert Yetman

Robert Yetman 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: 9118045
    Abstract: A battery adapted to operate at low (typically ambient) temperatures for a short initial period and thereafter at higher temperatures. A Li—Mg alloy anode is provided, including up to 25% magnesium, in a liquid thionyl chloride bath which acts as the cathode. A thin, substantially pure lithium layer is applied to a surface of the Li—Mg anode, preferably of a thickness in the range of 0.0019 to 0.0025 inch to allow obtaining of sufficiently high power and voltage output at lower temperatures for a short period where at such lower temperatures the required voltage and power would not otherwise be available from a Li—Mg anode. Thereafter, the battery may be used in, and exposed to, higher temperatures where at such temperatures the necessary voltage and power from the remaining Li—Mg alloy anode is then available.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: August 25, 2015
    Assignee: ENGINEERED POWER LTD.
    Inventors: Richard J. Marshall, Robert Yetman
  • Publication number: 20130101880
    Abstract: A battery and method of making such battery, adapted to operate at low (typically ambient) temperatures for a short initial period and thereafter at higher temperatures. A Li—Mg alloy anode is provided, comprising up to 25% magnesium, in a liquid thionyl chloride bath which as the cathode for high temperature operation. A thin, substantially pure lithium layer is applied to a surface of the Li—Mg anode, preferably in the range of 0.0019 to 0.0025 inches (0.04826-0.0635 mm), to allow obtaining of sufficiently high power and voltage output at lower temperatures for a short period where at such lower temperatures the required voltage and power would not otherwise be available from a Li—Mg anode. Thereafter, the battery may thereafter be used in, and exposed to, higher temperatures of up to 220° C. where at such temperatures the necessary voltage and power from the remaining Li—Mg alloy anode is then available.
    Type: Application
    Filed: October 20, 2011
    Publication date: April 25, 2013
    Applicant: Engeneered Power Services Inc.
    Inventors: Richard J. MARSHALL, Robert YETMAN
  • Patent number: 7882622
    Abstract: An apparatus and method for fabricating continuous cathode collecters for use in lithium/thionyl chloride and lithium/sulfuryl chloride cells is described. The preferred electrically conductive material is acetylene black mixed with a polytetrafluroethylene (PTFE) binder in a dry, powderized form. The collector substrate is a nickel or stainless steel foil that has been expanded into a mesh or otherwise provided with perforations. A centering adjustment of the collector substrate controls loading of the electrically conductive mixture onto each side thereof. The dry, powdered electrically conductive mixture is then continuously fed into the calender and formed into a collector structure by locking to itself through the collector substrate perforations before being cut to size.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: February 8, 2011
    Assignee: Electrochem Solutions, Inc.
    Inventors: Peter Polsonetti, Mihai Albu, Moazzam Aziz, Robert Yetman, Douglas Woodnorth
  • Publication number: 20070143989
    Abstract: An apparatus and method for fabricating continuous cathode collecters for use in lithium/thionyl chloride and lithium/sulfuryl chloride cells is described. The preferred electrically conductive material is acetylene black mixed with a polytetrafluroethylene (PTFE) binder in a dry, powderized form. The collector substrate is a nickel or stainless steel foil that has been expanded into a mesh or otherwise provided with perforations. A centering adjustment of the collector substrate controls loading of the electrically conductive mixture onto each side thereof. The dry, powdered electrically conductive mixture is then continuosly fed into the calender and formed into a collector structure by locking to itself through the collector substrate perforations before being cut to size.
    Type: Application
    Filed: December 22, 2006
    Publication date: June 28, 2007
    Inventors: Peter Polsonetti, Mihai Albu, Moazzam Aziz, Robert Yetman, Douglas Woodnorth