Patents by Inventor Griffith Evans

Griffith Evans 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).

  • Piston-activated valve and methods and apparatus for restraining free play in a device
    Publication number: 20060180201
    Abstract: Apparatus and methods for fitting mechanical parts to minimize prevent free play are described. An apparatus having a piston is designed so as to restrain the piston before actuation, and so as to allow the piston to gain momentum before striking an object. The described apparatus are applicable to devices involving shearable elements. An embodiment of the invention relates to a pyrotechnically activated valve incorporating such features to minimize free play in conjunction with such features so as to restrain the piston and also allow the piston to gain momentum.
    Type: Application
    Filed: March 20, 2006
    Publication date: August 17, 2006
    Inventor: Griffith Evans