Patents by Inventor David L. Shumway

David L. Shumway 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).

  • Patent number: 7775536
    Abstract: This invention relates to mounted, adjustable steps for vehicles and, in particular, to a multi-angle, extendable, and selectively height-adjustable step that can be mounted to a trailer such as a boat trailer, a camping trailer, trailers for all-terrain vehicles and motorcycles, and the like. The adjustable step assembly of the present invention includes a mounting bracket, an extension member, and a step. The extension member includes a first end and a second end. The first end of the extension member being pivotably connect to the mounting bracket to facilitate selective pivoting with respect to the mounting bracket through a range of motion including a first position and a second position being higher than the first position. The step may be connected to the second end of the extension member and configured to provide at least a first stepping area and a second stepping area when the extension member is selectively positioned in the first and second positions, respectively.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: August 17, 2010
    Inventor: David L. Shumway
  • Publication number: 20090014978
    Abstract: This invention relates to mounted, adjustable steps for vehicles and, in particular, to a multi-angle, extendable, and selectively height-adjustable step that can be mounted to a trailer such as a boat trailer, a camping trailer, trailers for all-terrain vehicles and motorcycles, and the like. The adjustable step assembly of the present invention includes a mounting bracket, an extension member, and a step. The extension member includes a first end and a second end. The first end of the extension member being pivotably connect to the mounting bracket to facilitate selective pivoting with respect to the mounting bracket through a range of motion including a first position and a second position being higher than the first position. The step may be connected to the second end of the extension member and configured to provide at least a first stepping area and a second stepping area when the extension member is selectively positioned in the first and second positions, respectively.
    Type: Application
    Filed: January 2, 2008
    Publication date: January 15, 2009
    Inventor: David L. Shumway
  • Patent number: D802517
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: November 14, 2017
    Assignee: Megaware KeelGuard, Inc.
    Inventor: David L Shumway