Patents by Inventor Timothy Trunkle

Timothy Trunkle 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).

  • Externally mounted window spring balance replacement device assembly
    Patent number: 6470530
    Abstract: The invention is an externally mounted window spring balance device assembly for installation on single or double-hung sash windows either not originally equipped with a counter balance device or on single or double-hung sash windows where the counter balance device has become inoperative due to broken or worn out parts. The externally mounted window spring balance replacement device assembly eliminates the need to disassemble the window frame to access broken or worn out parts located internal to the window frame.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: October 29, 2002
    Inventor: Timothy Trunkle