Patents by Inventor David E. Cowan

David E. Cowan 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).

  • Publication number: 20140190395
    Abstract: A portable roadway warning device comprising one or more rumble strips. Each rumble strip comprises a plurality of modular strip sections, each made of a polymeric material. Opposite end edges of each of the strip sections have alternating notches and tabs sized and spaced for engagement with respective tabs and notches on opposite end edges of other of the strip sections to provide a releasable connected joint therebetween. Pressure sensitive adhesive tape is applied to the top surface of the joint between the connected end edges of the strip sections to prevent the connected end edges from inadvertently separating from one another when the connected strip sections are dragged along the ground or lifted up to move the connected strip sections from one location to another.
    Type: Application
    Filed: January 6, 2014
    Publication date: July 10, 2014
    Applicant: Plastic Safety Systems, Inc.
    Inventor: David E. Cowan
  • Patent number: 7922420
    Abstract: A barrier includes a housing having a front wall and an opposing back wall each extending between opposing sidewalls. The housing also includes a floor and an interior surface bounding a chamber, the chamber communicating externally through an inlet opening. A first inset projects into the chamber from the front wall so as to form a recessed pocket on the front wall. A second inset projects into the chamber from the back wall so as to form a recessed pocket on the back wall. The first inset and the second inset are connected together within the chamber so that the chamber encircles the connection.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: April 12, 2011
    Assignee: Off the Wall Products, LLC
    Inventors: Marc E. Christensen, Greg H. Brown, David E. Cowan, Bryan D. Grabowski, Charles M. Mettler, Bruce E. Owens, Patricia Russell
  • Publication number: 20100034584
    Abstract: A barrier includes a housing having a front wall and an opposing back wall each extending between opposing sidewalls. The housing also includes a floor and an interior surface bounding a chamber, the chamber communicating externally through an inlet opening. A first inset projects into the chamber from the front wall so as to form a recessed pocket on the front wall. A second inset projects into the chamber from the back wall so as to form a recessed pocket on the back wall. The first inset and the second inset are connected together within the chamber so that the chamber encircles the connection.
    Type: Application
    Filed: August 5, 2009
    Publication date: February 11, 2010
    Applicant: OFF THE WALL PRODUCTS LLC
    Inventors: Marc E. Christensen, Greg H. Brown, David E. Cowan, Bryan D. Grabowski, Charles M. Mettler, Bruce E. Owens, Patricia Russell
  • Patent number: 7588387
    Abstract: A barrier includes a housing having a front wall and an opposing back wall each extending between opposing sidewalls. The housing also includes a floor and an interior surface bounding a chamber, the chamber communicating externally through an inlet opening. A first inset projects into the chamber from the front wall so as to form a recessed blind pocket on the front wall. A second inset projects into the chamber from the back wall so as to form a recessed blind pocket on the back wall. The first inset and the second inset are connected together within the chamber so that the chamber encircles the connection.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: September 15, 2009
    Assignee: Off the Wall Products, LLC
    Inventors: Marc E. Christensen, Greg H. Brown, David E. Cowan, Bryan D. Grabowski, Charles M. Mettler, Bruce E. Owens, Patricia Russell
  • Patent number: 6769207
    Abstract: A portable sign assembly includes one or more sign supports attached to the outer surface of a flexible band that may be adjustable to fit different diameter drums. Each sign support may have a substantially planar front face to facilitate attachment of a panel assembly to the sign support. The panel assembly may comprise one or more sign panels. If there is more than one sign panel, a drop panel having a greater vertical height than the sign support may be attached to the sign support to provide a larger attachment area for the sign panels.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: August 3, 2004
    Assignee: Plastic Safety Systems, Inc.
    Inventors: Gregory H. Brown, Charles M. Mettler, David E. Cowan
  • Patent number: 6182600
    Abstract: Traffic channeling device includes a delineator stem having hollow upper and lower portions, the upper portion being stepped inwardly along its axial length to form sequential stepped surfaces from the bottom to the top of the upper portion, and the lower portion being frustoconically shaped. Adjacent the bottom of the delineator stem is a radial flange portion which resists pullout of one or more ring-shaped base members placed over the top of the delineator stem to act as ballast for the delineator stem. The base members include a non-circular raised portion and a correspondingly sized recessed portion such that when one base member is stacked on top of another, the recessed portion of one base member will receive the raised portion of the other base member and resist relative rotatable movement between the base members.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: February 6, 2001
    Assignee: Plastic Safety Systems, Inc.
    Inventors: Gregory H. Brown, David E. Cowan, David A. Cowan
  • Patent number: 5421668
    Abstract: A weight or ballast for a temporary traffic control device or post is made of one or more tire tread sections. An opening extending through or formed by the tread sections is sized to receive an upstanding portion of the device or post.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: June 6, 1995
    Assignee: Plastic Safety Systems, Inc.
    Inventors: David E. Cowan, David A. Cowan
  • Patent number: D533281
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: December 5, 2006
    Assignee: Off the Wall Products, LLC
    Inventors: Marc E. Christensen, Greg H. Brown, David E. Cowan, Bryan D. Grabowski, Charles M Mettler, Bruce E. Owens, Patricia Russell
  • Patent number: D406543
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: March 9, 1999
    Assignee: Plastic Safety Systems, Inc.
    Inventors: Gregory H. Brown, David E. Cowan, David A. Cowan