Patents by Inventor Lewis D. Boyette

Lewis D. Boyette 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).

  • Attachment for safety valves
    Patent number: 4432383
    Abstract: A restraining block engages the valve stem of a safety valve, holding the valve open. The block is selectively rotatable within an auxiliary housing from a locked to a released position wherein both block and stem are free to move along the stem axis, permitting the valve to close.
    Type: Grant
    Filed: October 15, 1981
    Date of Patent: February 21, 1984
    Inventor: Lewis D. Boyette