Patents by Inventor Edward W. Rider, Jr.

Edward W. Rider, Jr. 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: 5595694
    Abstract: A process for producing alkenyl aromatic foams utilizing a combination of atmospheric and organic gases as blowing agent, preferably using greater than 30% by weight of atmospheric gas, and preferably also using a predetermined about of a masterbatch mix comprising a styrenic polymer, a rubbery block copolymer, and a solid blowing agent. Also disclosed are alkenyl aromatic foams produced by the process which exhibit increased densities, increased thermoforming capabilities, increased post-expansion properties, and increased retainment of the atmospheric and organic gases.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: January 21, 1997
    Inventors: Michael E. Reedy, Edward W. Rider, Jr.
  • Patent number: 5413239
    Abstract: A hinge made of a unitary structure which has two main projecting members and a space therebetween. The hinge is able to flex and has little biasing toward the open or closed positions.
    Type: Grant
    Filed: January 27, 1994
    Date of Patent: May 9, 1995
    Assignee: Genpak Corporation
    Inventor: Edward W. Rider, Jr.
  • Patent number: 5403865
    Abstract: The present invention relates to a process to produce polystyrene foam comprising mixing a predetermined amount of masterbatch mix and a styrenic polymer, heating this mixture, injecting CO.sub.2 and/or nitrogen, in gas or liquid form, as a blowing agent and subsequently extruding, cooling and drying the resulting polystyrene foam.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: April 4, 1995
    Assignees: Reedy International Corporation, Genpak Corporation
    Inventors: Michael E. Reedy, Edward W. Rider, Jr.
  • Patent number: 5342857
    Abstract: The present invention relates to a process to produce polystyrene foam comprising mixing a predetermined amount of masterbatch mix and a styrenic polymer, heating this mixture, injecting CO.sub.2 and/or nitrogen, in gas or liquid form, as a blowing agent and subsequently extruding, cooling and drying the resulting polystyrene foam.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: August 30, 1994
    Assignees: Reedy International Corporation, Genpak Corporation
    Inventors: Michael E. Reedy, Edward W. Rider, Jr.
  • Patent number: 5339973
    Abstract: A container for storing foods or other goods comprising a tray including a bottom and at least one side wall extending upwardly from the bottom, the side wall including a seal flange; a cover including a top and at least one side wall extending downwardly from the top, the side wall of the cover including a second seal flange; wherein each of the seal flanges of the cover and the tray comprise a curved surface, the curved surfaces interlocking over an arc of more than 180.degree. to form a seal between the tray and the cover.
    Type: Grant
    Filed: May 14, 1992
    Date of Patent: August 23, 1994
    Assignee: Genpak Corp.
    Inventors: Richard T. Edwards, Edward W. Rider, Jr., Stephen J. Susta, Jr., William R. Crawford
  • Patent number: 5302624
    Abstract: The present invention relates to a process to produce polystyrene foam comprising mixing a predetermined amount of masterbatch mix and a styrenic polymer, heating this mixture, injecting CO.sub.2 and/or nitrogen, in gas or liquid form, as a blowing agent and subsequently extruding, cooling and drying the resulting polystyrene foam.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: April 12, 1994
    Inventors: Michael E. Reedy, Edward W. Rider, Jr.
  • Patent number: 5269987
    Abstract: There is disclosed a process for producing alkenyl aromatic foams utilizing a combination of atmospheric and organic gases as blowing agent, preferably using greater than 30% by weight of atmospheric gas, and preferably also using a predetermined about of a masterbatch mix comprising a styrenic polymer, a rubbery block copolymer, and a solid blowing agent. Also disclosed are alkenyl aromatic foams produced by the process which exhibit increased densities, increased thermoforming capabilities, increased post-expansion properties, and increased retainment of the atmospheric and organic gases.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: December 14, 1993
    Inventors: Michael E. Reedy, Edward W. Rider, Jr.
  • Patent number: 5218006
    Abstract: The present invention relates to a process to produce polystyrene foam comprising mixing a predetermined amount of masterbatch mix and a styrenic polymer, heating this mixture, injecting CO.sub.2 and/or nitrogen, in gas or liquid form, as a blowing agent and subsequently extruding, cooling and drying the resulting polystyrene foam.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: June 8, 1993
    Inventors: Michael E. Reedy, Edward W. Rider, Jr.
  • Patent number: 4383954
    Abstract: Method and apparatus for continuously forming articles and stacking them ready for formation of batches from the stack. Some of the articles are treated by being given a disfigurement which makes them identifiable in the stack so that batch lengths containing predetermined numbers of articles are clearly seen. These disfigurements are caused by moving a moveable element forming part of the forming surface of the machine whereby the surface shape is changed to cause change in shape of the articles. The invention is particularly useful during forming and stacking of shallow thermoformed thermoplastic articles.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: May 17, 1983
    Assignee: Genpak Corporation
    Inventor: Edward W. Rider, Jr.