Patents by Inventor Andrew J. Malpass

Andrew J. Malpass 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).

  • Dual lifting manhole cover
    Patent number: 7905679
    Abstract: A one-piece, unitary manhole cover has dual lifting ports that drain through the outer circumferential edge of the cover. A lifting channel runs from the interior of the upper face out to the outer circumferential edge. A lifting bar spans the lifting channel and defines an ergo lifting port and a pry bar lifting port. Both the ergo lifting port and the pry bar lifting port drain through the outer circumference of the manhole cover.
    Type: Grant
    Filed: November 12, 2007
    Date of Patent: March 15, 2011
    Assignee: East Jordan Iron Works, Inc.
    Inventors: Kevin S. Vrondran, Jeremy I. Johnson, Andrew J. Malpass
  • DUAL LIFTING MANHOLE COVER
    Publication number: 20090123227
    Abstract: A one-piece, unitary manhole cover has dual lifting ports that drain through the outer circumferential edge of the cover. A lifting channel runs from the interior of the upper face out to the outer circumferential edge. A lifting bar spans the lifting channel and defines an ergo lifting port and a pry bar lifting port. Both the ergo lifting port and the pry bar lifting port drain through the outer circumference of the manhole cover.
    Type: Application
    Filed: November 12, 2007
    Publication date: May 14, 2009
    Applicant: EAST JORDAN IRON WORKS, INC.
    Inventors: Kevin S. Vrondran, Jeremy I. Johnson, Andrew J. Malpass