Patents by Inventor Randall E. Pipkorn

Randall E. Pipkorn 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: 8997658
    Abstract: A cover of rigid planar configuration is designed for removable placement on the open top of a wheelbarrow for complete closing thereof to protect materials that are oftentimes contained therein from environmental damage. In particular, curable materials such as cement, mortar and the like will begin to cure if left unattended for more than short periods of time and this problem is particularly troublesome in dry climates. The cover is provided with a depending lip for engaging the sides of the wheelbarrow to prevent the cover from siding movement on the wheelbarrow, and tie-down devices can be used to releasably secure the cover on the wheelbarrow. In addition to protecting the contents of the wheelbarrow, the planar surface of the cover can provide a convenient work surface of use on a job site.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: April 7, 2015
    Inventors: Randall E. Pipkorn, Nancy M. Pipkorn
  • Publication number: 20110139038
    Abstract: A cover of rigid planar configuration is designed for removable placement on the open top of a wheelbarrow for complete closing thereof to protect materials that are oftentimes contained therein from environmental damage. In particular, curable materials such as cement, mortar and the like will begin to cure if left unattended for more than short periods of time and this problem is particularly troublesome in dry climates. The cover is provided with a depending lip for engaging the sides of the wheelbarrow to prevent the cover from siding movement on the wheelbarrow, and tie-down devices can be used to releasably secure the cover on the wheelbarrow. In addition to protecting the contents of the wheelbarrow, the planar surface of the cover can provide a convenient work surface of use on a job site.
    Type: Application
    Filed: December 16, 2009
    Publication date: June 16, 2011
    Inventors: Randall E. Pipkorn, Nancy M. Pipkorn