Patents by Inventor Matthew E. Sayer

Matthew E. Sayer 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: 7780902
    Abstract: A method of molding a shopping cart component includes providing a first subcomponent and then overmolding the shopping cart component as a second subcomponent about the first subcomponent. The first subcomponent acts as an obstacle to a plastic injection stream and to a gas injection stream during the overmolding of the second component to assist in defining a first hollow section of the shopping cart component adjacent the first subcomponent.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: August 24, 2010
    Assignee: Target Brands, Inc.
    Inventors: David L. Pruitt, Jr., Mark T. Ryan, Charles E. Shell, Robert D. Peota, Kenneth R. Crow, Matthew E. Sayer
  • Publication number: 20080164640
    Abstract: A method of molding a shopping cart component includes providing a first subcomponent and then overmolding the shopping cart component as a second subcomponent about the first subcomponent. The first subcomponent acts as an obstacle to a plastic injection stream and to a gas injection stream during the overmolding of the second component to assist in defining a first hollow section of the shopping cart component adjacent the first subcomponent.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 10, 2008
    Inventors: David L. Pruitt, Mark T. Ryan, Charles E. Shell, Robert D. Peota, Kenneth R. Crow, Matthew E. Sayer
  • Patent number: 4923667
    Abstract: An injection molded plastic article is produced by introducing a stream of molten plastic material from an injection molding machine cylinder into an article forming mold space. Pressurized gas is supplied into the interior of the molten plastic material to form a gas containing cavity therein. The plastic material is then allowed to solidify and cool sufficiently so that the article can itself sustain the form dictated by the mold surface. The cavity is vented to reduce the pressure within the cavity to ambient pressure prior to opening of the mold.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: May 8, 1990
    Assignee: Cinpres Limited
    Inventor: Matthew E. Sayer
  • Patent number: 4740150
    Abstract: Apparatus for producing an injection moulding of plastics material comprises means for introducing a supply of plastics material, passage means for communicating the supply means to a mould space, and means for introducing a pressurized gas into the plastics material filling the mould space whereby the gas creates a gas containing cavity in the plastics material and for thereafter relieving the gas pressure within the gas containing cavity before the mould is opened.
    Type: Grant
    Filed: May 12, 1987
    Date of Patent: April 26, 1988
    Assignee: Peerless Cinpres Limited
    Inventor: Matthew E. Sayer