Patents by Inventor Douglas A. R. Batson

Douglas A. R. Batson 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).

  • Inflatable keel
    Patent number: 5964176
    Abstract: Methods and devices are provided for a water craft, for use on a body of water, having a bottom, and an inflatable keel, coupled to the bottom, wherein the keel contacts the surface of the water during operation of the craft, the keel comprising an inflatable bladder wherein inflating the bladder results in the keel at least partially transitioning from a collapsed state to an inflated state.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: October 12, 1999
    Assignee: WETCO, L.L.C.
    Inventors: William C. Grunau, Douglas A. R. Batson