Patents by Inventor Michael James Spraggon

Michael James Spraggon 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).

  • Apparatus for Climbing a Rope
    Publication number: 20130133981
    Abstract: The invention provides an ascender or other rope-gripping device which is separated form its handle by a connection of length such that when, in use, the ascender is attached to a single rope suspended from above with a second, handled ascender below it. The second ascender can be lifted up along the rope to a position where its associated handle is above the handle of the first ascender.
    Type: Application
    Filed: August 19, 2011
    Publication date: May 30, 2013
    Inventor: Michael James Spraggon