Patents by Inventor Douglas M. Dewar

Douglas M. Dewar 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).

  • Carbon/carbon heat exchanger and manufacturing method
    Publication number: 20010047862
    Abstract: A heat exchanger includes a plurality of plates, and a plurality of sharp-cornered carbon/carbon fins between the plates.
    Type: Application
    Filed: May 29, 2001
    Publication date: December 6, 2001
    Inventors: Alexander F. Anderson, Douglas M. Dewar, Christopher K. Duncan, Michael Fellman, Ilan Golecki, William F. Maudru, Terence B. Walker, Liang Xue
  • Combined water coalescer odor removal filter for use in water separation systems
    Patent number: 6302932
    Abstract: A filter for coalescing water and removing odor from air includes a water coalescing layer made of a synthetic fiber and an odor removal layer including an adsorbent material that operatively interfaces the coalescing layer. The coalescing and removal layers are shaped to receive and expel the air. Both layers can be supported by a frame and/or an outer support layer of polyester material.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: October 16, 2001
    Assignees: Honeywell International, Inc., The Boeing Company
    Inventors: Peter Dale Unger, Ronald Paul Rohrbach, Douglas M. Dewar, Daniel E. Bause, Lixin Luke Xue, Richard M. Norris, Samuel L. Penrod, Michael K. Chan, Gregory H. Barnett
  • Composite plate pin or ribbon heat exchanger
    Patent number: 5845399
    Abstract: A composite parallel plate heat exchanger is provided constructed of a plurality of composite plates disposed in a substantial parallel stacked relationship and spaced from each other by composite ribs inserted through and bonded between adjacent plates. The composite plates and ribs are specially constructed to maximize heat transfer between adjacent passageways formed by the plates and the fluids flowing in these passageways.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: December 8, 1998
    Assignee: AlliedSignal Inc.
    Inventors: Douglas M. Dewar, Christopher K. Duncan, Alexander F. Anderson
  • Composite plate pin or ribbon heat exchanger
    Patent number: 5655600
    Abstract: A composite parallel plate heat exchanger is provided constructed of a plurality of composite plates disposed in a substantial parallel stacked relationship and spaced from each other by composite ribs inserted through and bonded between adjacent plates. The composite plates and ribs are specially constructed to maximize heat transfer between adjacent passageways formed by the plates and the fluids flowing in these passageways.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 12, 1997
    Assignee: AlliedSignal Inc.
    Inventors: Douglas M. Dewar, Christopher K. Duncan, Alexander F. Anderson
  • Composite continuous sheet fin heat exchanger
    Patent number: 5628363
    Abstract: Heat exchangers constructed of a plurality of composite ribbed sheets plates disposed and in a substantial parallel plate stacked relationship are disclosed. The sheets or plates can be spaced from each other by composite ribs or bars formed integral with or bonded to and between adjacent plates. The composite plates function as the fins of a conventional plate fin heat exchanger while the ribs form the passageways to separate adjacent fluids. The fins are specially constructed to maximize heat transfer between adjacent passageways formed by the ribs and the fluids flowing in these passageways.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: May 13, 1997
    Assignee: AlliedSignal Inc.
    Inventors: Douglas M. Dewar, Alexander F. Anderson, Christopher K. Duncan
  • Composite machined fin heat exchanger
    Patent number: 5626188
    Abstract: Heat exchangers machined form a thermally oriented block of composite material is provided. First and second arrays of fins can be machined into opposite sides of the block. Composite plates can be disposed over the machined fins to form passageways. The composite plates and fins are specially constructed to maximize heat transfer between adjacent passageways formed by the plates and the fluids flowing in these passageways.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: May 6, 1997
    Assignee: AlliedSignal Inc.
    Inventors: Douglas M. Dewar, Alexander F. Anderson, Christopher K. Duncan