Patents by Inventor Craig J. Demko

Craig J. Demko 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: 6749215
    Abstract: A dolly for transporting multiple containers. The dolly is provided with a plurality of casters which allow it to spin on its footprint. Supports, each of which can carry a container, are hinged together allowing the dolly to flex when encountering alterations in flooring level. Also provided are large side wheels which reduce the force necessary to push the dolly over a bump or onto a floor which is at a higher elevation. When one support is not carrying a container, the support can be rotated with the hinge to a point at which it is approximately perpendicular to the adjacent support and thereby approximately vertical to the floor. Rotating one support to an approximately vertical position shortens the dolly footprint and aids in storage. Moreover, a support which is rotated to an approximately vertical position can be temporarily maintained in that position by a lock.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: June 15, 2004
    Assignee: Rubbermaid Commercial Products LLC
    Inventors: Thomas Perelli, Craig J. Demko
  • Patent number: 6746039
    Abstract: A dolly for transporting multiple containers. The dolly is provided with a plurality of casters which allow it to spin on its footprint. Supports, each of which can carry a container, are hinged together allowing the dolly to flex when encountering alterations in flooring level. Also provided are large side wheels which reduce the force necessary to push the dolly over a bump or onto a floor which is at a higher elevation. When one support is not carrying a container, the support can be rotated with the hinge to a point at which it is approximately perpendicular to the adjacent support and thereby approximately vertical to the floor. Rotating one support to an approximately vertical position shortens the dolly footprint and aids in storage. Moreover, a support which is rotated to an approximately vertical position can be temporarily maintained in that position by a lock.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: June 8, 2004
    Assignee: Rubbermaid Commercial Products LLC
    Inventors: Thomas Perelli, Craig J. Demko
  • Publication number: 20040070159
    Abstract: A dolly for transporting multiple containers. The dolly is provided with a plurality of casters which allow it to spin on its footprint. Supports, each of which can carry a container, are hinged together allowing the dolly to flex when encountering alterations in flooring level. Also provided are large side wheels which reduce the force necessary to push the dolly over a bump or onto a floor which is at a higher elevation. When one support is not carrying a container, the support can be rotated with the hinge to a point at which it is approximately perpendicular to the adjacent support and thereby approximately vertical to the floor. Rotating one support to an approximately vertical position shortens the dolly footprint and aids in storage. Moreover, a support which is rotated to an approximately vertical position can be temporarily maintained in that position by a lock.
    Type: Application
    Filed: February 23, 2001
    Publication date: April 15, 2004
    Inventors: Thomas Perelli, Craig J. Demko
  • Publication number: 20030025303
    Abstract: A dolly for transporting multiple containers. The dolly is provided with a plurality of casters which allow it to spin on its footprint. Supports, each of which can carry a container, are hinged together allowing the dolly to flex when encountering alterations in flooring level. Also provided are large side wheels which reduce the force necessary to push the dolly over a bump or onto a floor which is at a higher elevation. When one support is not carrying a container, the support can be rotated with the hinge to a point at which it is approximately perpendicular to the adjacent support and thereby approximately vertical to the floor. Rotating one support to an approximately vertical position shortens the dolly footprint and aids in storage. Moreover, a support which is rotated to an approximately vertical position can be temporarily maintained in that position by a lock.
    Type: Application
    Filed: September 16, 2002
    Publication date: February 6, 2003
    Applicant: RUBBERMAID COMMERCIAL PRODUCTS LLC
    Inventors: Thomas Perelli, Craig J. Demko
  • Publication number: 20030020261
    Abstract: A dolly for transporting multiple containers. The dolly is provided with a plurality of casters which allow it to spin on its footprint. Supports, each of which can carry a container, are hinged together allowing the dolly to flex when encountering alterations in flooring level. Also provided are large side wheels which reduce the force necessary to push the dolly over a bump or onto a floor which is at a higher elevation. When one support is not carrying a container, the support can be rotated with the hinge to a point at which it is approximately perpendicular to the adjacent support and thereby approximately vertical to the floor. Rotating one support to an approximately vertical position shortens the dolly footprint and aids in storage. Moreover, a support which is rotated to an approximately vertical position can be temporarily maintained in that position by a lock.
    Type: Application
    Filed: September 16, 2002
    Publication date: January 30, 2003
    Applicant: RUBBERMAID COMMERCIAL PRODUCTS LLC
    Inventors: Thomas Perelli, Craig J. Demko
  • Patent number: D460236
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: July 9, 2002
    Assignee: Rubbermaid Commercial Products LLC
    Inventors: Thomas Perelli, Craig J. Demko