Patents by Inventor David A. Boyer

David A. Boyer 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: 7532469
    Abstract: In a module unit in a housing, the module unit is designed to easily slide into and out of the housing. The housing has one or more plenums through which convective air circulates around and through the module unit. A sealing mechanism seals openings that connect the module unit and one or more of the plenums. When the module unit is removed from the housing, a lift mechanism removes the sealing mechanism from the openings, and allows the module unit to be easily removed from the housing. After reinsertion of the module unit, the lift mechanism reinserts the sealing mechanism into the openings.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: May 12, 2009
    Inventors: Vlastimil Frank, Allen M. Jones, David A. Boyer
  • Patent number: 7510140
    Abstract: A method of generating lift for a vehicle including a gas turbine engine having a combustor, a core flow heated by the combustor, and a bypass flow which bypasses the combustor. The method includes segregating at least a portion of the core flow from the bypass flow, directing the segregated portion of the core flow in a first direction to generate lift for the vehicle, segregating at least a portion of the bypass flow from the core flow, and directing the segregated a portion of the bypass flow in a second direction to generate lift for the vehicle.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: March 31, 2009
    Assignee: The Boeing Company
    Inventors: Edward L. Lawson, David A. Boyer
  • Patent number: 4963459
    Abstract: The present invention provides a method of registering to an imaging web moving within an imaging web handling apparatus along an imaging web path. The imaging web comprises a support having a coating of photosensitive microcapsules on the surface thereof. The photosensitive microcapsules have an internal phase of a photosensitive composition and a color former. Exposure of the imaging web to actinic radiation defines an image area and a border area.A registration mark is formed on the web by exposing a portion of the web area to actinic radiation so that the portion undergoes a color or reflection change, or exposing all but a portion of the border area to actinic radiation so that the exposed area undergoes a color or reflection change. The registration mark is detected and in response to detection of the registration mark, an operation is performed on the imaging web.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: October 16, 1990
    Assignee: The Mead Corporation
    Inventors: Jack Beery, David A. Boyer
  • Patent number: 4825251
    Abstract: The present invention provides an imaging process wherein the pressure application developer means is not contaminated during pressure development. The process involves an imaging web including a support having a layer on the surface thereof of photosensitive microcapsules including an internal phase of a photohardenable photosensitive composition and a color former. The imaging web is image-wise exposed to a first source of actinic radiation to form an image area; this exposure defines a border area in the web comprising the areas of the imaging web surrounding the image area. The image area of the imaging web is contacted with an opaque receiver sheet. The border area is then uniformly exposed to a second source of actinic radiation to harden the microcapsules in the border area.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: April 25, 1989
    Assignee: The Mead Corporation
    Inventors: Erik K. Nelson, Michael E. Demarchi, David A. Boyer
  • Patent number: 4770972
    Abstract: The present invention provides an imaging process wherein the pressure application developer means is not contaminated during pressure development. The process involves an imaging web including a support having a layer on the surface thereof of photosensitive microcapsules including an internal phase of a photohardenable photosensitive composition and a color former. The imaging web is image-wise exposed to a first source of actinic radiation to form an image area; this exposure defines a border area in the web comprising the areas of the imaging web surrounding the image area. The image area of the imaging web is contacted with an opaque receiver sheet. The border area is then uniformly exposed to a second source of actinic radiation to harden the microcapsules in the border area.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: September 13, 1988
    Assignee: The Mead Corporation
    Inventors: Erik K. Nelson, Michael E. Demarchi, David A. Boyer
  • Patent number: 4727392
    Abstract: Methods and apparatus for pressure developing imaging sheets are described. In a three roll embodiment, first and second rolls are journaled into a housing to form a nip for rupturing microcapsules on the surface of an imaging sheet as it is passed through the nip. Such rolls are aligned at a slight skew angle and are resiliently pressed into one another by means of a third roll supported at a skew angle relative to the roll it contacts. In a two roll embodiment, the first and second rolls are crowned and pressed into contact with one another to present a uniform nip. In a four roll embodiment, the first and second rolls are aligned in parallel with each other, while a skewed roll backs up each of the first and second rolls. The backup rolls may alternatively be crowned. In any embodiment, the imaging sheet is directed into the nip to contact one roll at an angle of arc along the roll ahead of the nip.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: February 23, 1988
    Assignee: The Mead Corporation
    Inventors: Benjamin C. Stone, David A. Boyer, Edward J. Saccocio, Erik K. Nelson
  • Patent number: 4592986
    Abstract: Imaging sheets having a coating containing chromogenic material and a photosensitive composition with at least the photosensitive composition encapsulated in rupturable microcapsules as an internal phase are processed by contacting the imaging sheets with a traveling pile formed by magnetically attractable free particles on a magnetic brush to rupture the microcapsules coating the surfaces of the imaging sheets by means of a soft pliable brushing action of the pile against the imaging sheets.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: June 3, 1986
    Assignee: The Mead Corporation
    Inventors: Erik K. Nelson, Joseph G. O'Connor, David A. Boyer, Edward J. Saccocio