Patents by Inventor Christopher M. Shaffer

Christopher M. Shaffer 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).

  • Encapsulated and vented particulate thermal insulation
    Patent number: 8453393
    Abstract: An article includes a piece of encapsulated insulation including an envelope having at least two vents therethrough, a particulate insulation within the envelope, and a porous filter overlying each vent of the envelope. The porous filter has a mesh size no larger that the minimum size of the particles. The article may further include a structure having a structure surface, and the piece of encapsulated insulation overlies and covers at least a portion of the structure surface.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: June 4, 2013
    Assignees: Raytheon Company, Aspen Aerogels, Inc.
    Inventors: Alberto E. Schroth, Jimmy L. Clark, Michael Doan, David M. La Komski, Shannon O. White, Stephen E. Smith, Christopher M. Shaffer, Wilfried Krone-Schmidt
  • Encapsulated and vented particulate thermal insulation
    Publication number: 20080057334
    Abstract: An article includes a piece of encapsulated insulation including an envelope having at least two vents therethrough, a particulate insulation within the envelope, and a porous filter overlying each vent of the envelope. The porous filter has a mesh size no larger that the minimum size of the particles. The article may further include a structure having a structure surface, and the piece of encapsulated insulation overlies and covers at least a portion of the structure surface.
    Type: Application
    Filed: August 25, 2006
    Publication date: March 6, 2008
    Inventors: Alberto E. Schroth, Jimmy L. Clark, Michael Doan, David M. La Komski, Shannon O. White, Stephen E. Smith, Christopher M. Shaffer, Wilfried Krone-Schmidt
  • Collapsible buttstock for firearm
    Patent number: 7162822
    Abstract: A buttstock for a firearm having a buffer recoil mechanism is collapsible and adjustable. The buttstock includes a lower receiver extension having a bore therein that fits over the buffer recoil mechanism, the lower receiver extension being fixed to the buffer recoil mechanism; a buttstock body having a bore therein for receiving the lower receiver extension; a locking lever disposed along the bottom edge of the buttstock body; a locking pin disposed in the buttstock body and in the locking lever; and a compression spring disposed around the locking pin for biasing the locking pin towards the lower receiver extension.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: January 16, 2007
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Michael Heayn, Christopher M. Shaffer, Dean M. Mohamed, Kenneth R. Jones, Richard Beckman