Patents by Inventor Daniel Sizemore

Daniel Sizemore 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).

  • Ladder lock
    Patent number: 7445086
    Abstract: This is a device that will provide additional security for individuals who work on extension ladders. It can be fit to any extension ladder and provide a support mechanism so that, if the ladder were ever to shift backward, it would stop the ladder from shifting, thereby protecting the worker. Because of the telescoping nature of the tube, it provides protection and it may be used in a variety of settings.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: November 4, 2008
    Inventor: Daniel Sizemore