Patents by Inventor Berta C. Alfonso

Berta C. Alfonso 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: 4138139
    Abstract: A collapsible trash carrier which is wheeled for use in supporting a disposable plastic bag. The carrier is composed of a first and second pair of pivotal scissor type legs each having an upper end supporting a ring structure and a lower end provided with wheels so that the mouth of a plastic bag can be folded over the top of the ring and a tray is utilized between the legs to support the bottom of the bag. A keeper in the form of a ring with an annular recess sized to nest over the ring structure to hold a bag mouth zone is provided to keep the bag in position until it is full and to, thereafter, be removed for removal of the bag to dispose of it. The device is composed of pivotally interconnected parts for collapsibility.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: February 6, 1979
    Inventor: Berta C. Alfonso