Patents by Inventor Ralph J. Rogers

Ralph J. Rogers 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: 4917393
    Abstract: A trolley holds a container such as a plastic bag or sack in the open position for filling and has a rotatable table at the base which allows the bag to be twisted when at least partially full for tying and sealing. The trolley comprises two upright members forming a rigid frame with a short platform at the base, a rotatable table to hold the container is supported on a leg pivoted out from the platform, the table has skirt protector strips to prevent corners of the bag overlapping the table, and flexible support arms extending out from the two upright members with external ends to hold open the container resting on the table, the support arms being movable down in line with the two upright members to take into account different sized containers, and to allow the top of the container to be lowered when twisted on the table.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: April 17, 1990
    Inventor: Ralph J. Rogers