Patents by Inventor Stephen F. Stefely

Stephen F. Stefely 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).

  • Multi-purpose caulking gun
    Patent number: 7014070
    Abstract: A C-gun type caulk gun capable of accepting disposable caulk tubes having different outside diameters within a similar caulk tube body length.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: March 21, 2006
    Inventors: Stephen F. Stefely, Thomas J. Stefely
  • Fire stop closure
    Patent number: 5421127
    Abstract: A closure for preventing transmission of fire and smoke through a wall or floor containing a plastic pipe when the pipe is destroyed by fire, which comprises a flexible fire retardant sleeve encircling the pipe adapted to automatically collapse about the plastic pipe as it is destroyed by fire and thus close off any opening to the next level or adjacent area.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: June 6, 1995
    Inventor: Stephen F. Stefely
  • Fire stop device
    Patent number: 5301475
    Abstract: A fire stop device adapted to close an opening in a wall or floor having a plastic pipe extending through the opening when the pipe is destroyed by fire which comprises a base plate surrounding the opening having a collar projecting at right angles and attached to the base plate and adapted to surround the plastic pipe and means for automatically closing the collar opening when the plastic pipe is destroyed by fire.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: April 12, 1994
    Inventor: Stephen F. Stefely