Patents by Inventor Stuart Zinke

Stuart Zinke 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).

  • Collapsible cart
    Patent number: 8814199
    Abstract: Described is a collapsible cart that provides substantial stability when operated. A pair of enlarged wheels allow an operator to lift one end of the cart to traverse rough surfaces as needed. Enlarged wheels are mounted outside an overhead profile of the collapsible cart thereby providing lateral and other stability not previously possible. A first shelf, tray, bucket or working surface may be collapsed to contact or mate with a second such shelf to create an easily transportable or storable collapsed structure. A telescoping handle allows a collapsed cart to serve as a hand dolly.
    Type: Grant
    Filed: July 4, 2013
    Date of Patent: August 26, 2014
    Inventors: John Oliver Shindelar, Stuart Zinke
  • Collapsible Cart
    Publication number: 20130292925
    Abstract: Described is a collapsible cart that provides substantial stability when operated. A pair of enlarged wheels allow an operator to lift one end of the cart to traverse rough surfaces as needed. Enlarged wheels are mounted outside an overhead profile of the collapsible cart thereby providing lateral and other stability not previously possible. A first shelf, tray, bucket or working surface may be collapsed to contact or mate with a second such shelf to create an easily transportable or storable collapsed structure. A telescoping handle allows a collapsed cart to serve as a hand dolly.
    Type: Application
    Filed: July 4, 2013
    Publication date: November 7, 2013
    Inventors: John Oliver Shindelar, Stuart Zinke
  • Collapsible cart
    Patent number: 8505960
    Abstract: Described is a collapsible cart that provides substantial stability when operated. Enlarged inflatable or compliant rear wheels allow an operator to lift a front end of the cart to traverse rough surfaces as needed. Enlarged rear wheels are mounted outside an overhead profile of the collapsible cart thereby providing lateral and other stability. A first shelf, bucket or working surface may be collapsed to contact or mate with a second such shelf to create an easily transportable or storable collapsed structure. A telescoping handle allows a collapsed cart to serve as a hand dolly.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: August 13, 2013
    Inventors: John Oliver Shindelar, Stuart Zinke