Patents by Inventor Steven Coffman

Steven Coffman 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).

  • Mobile cart having a retractable-wheel base system
    Patent number: 8016300
    Abstract: A mobile cart for carrying a plurality of fluid canisters. The cart includes a platform configured to support the fluid canisters. The cart also includes a base having a base body and a plurality of wheels movably connected to the base body so that the wheels can be selectively moved with respect to the base body between an extended position and a retracted position. In the extended position, the plurality of wheels extends from the base body so the cart can roll, on the plurality of wheels, over the support surface supporting the cart. In the retracted position, the plurality of wheels is retracted relative to the base body so that the cart cannot roll, on the plurality of wheels, over the support surface.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: September 13, 2011
    Assignee: Cramer Decker Industries
    Inventors: Paul Cramer, Steven Coffman
  • MOBILE CART HAVING A RETRACTABLE-WHEEL BASE SYSTEM
    Publication number: 20090097957
    Abstract: A mobile cart for carrying a plurality of fluid canisters. The cart includes a platform configured to support the fluid canisters. The cart also includes a base having a base body and a plurality of wheels movably connected to the base body so that the wheels can be selectively moved with respect to the base body between an extended position and a retracted position. In the extended position, the plurality of wheels extends from the base body so the cart can roll, on the plurality of wheels, over the support surface supporting the cart. In the retracted position, the plurality of wheels is retracted relative to the base body so that the cart cannot roll, on the plurality of wheels, over the support surface.
    Type: Application
    Filed: October 1, 2008
    Publication date: April 16, 2009
    Inventors: Paul Cramer, Steven Coffman